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Author SHA1 Message Date
Blake Blackshear d95b381530 Create CNAME 2021-10-10 12:34:26 -05:00
blakeblackshear f6aaf8e36f deploy: d35b09b18f 2021-09-05 16:15:33 +00:00
blakeblackshear 389bf94641 deploy: faf103152a 2021-09-03 12:05:21 +00:00
blakeblackshear eb1b26f855 deploy: 58c0d97b5f 2021-08-14 12:37:01 +00:00
blakeblackshear 5c2dd3d931 deploy: abef002af8 2021-08-14 12:28:46 +00:00
blakeblackshear 2f475e6e79 deploy: adf2bc078c 2021-08-14 12:24:30 +00:00
blakeblackshear 9350ebfc3e deploy: 3bc75ae931 2021-08-05 10:43:14 +00:00
blakeblackshear 1978bf110a deploy: 03e756dd27 2021-06-17 12:29:17 +00:00
blakeblackshear 80993e2d03 deploy: 8ea75e6748 2021-06-05 12:29:04 +00:00
paularmstrong 72ab098fbe deploy: 09a4d6d030 2021-05-26 14:40:49 +00:00
paularmstrong 20fec29e0a deploy: e16dbcb671 2021-05-20 14:02:38 +00:00
blakeblackshear 3c87c40d4d deploy: e89697fab0 2021-05-19 11:49:51 +00:00
blakeblackshear fe92bc146b deploy: c52782aa3f 2021-05-19 01:46:10 +00:00
paularmstrong aeab8ecba7 deploy: 7060f22024 2021-05-14 16:24:22 +00:00
blakeblackshear 39a187989c deploy: d1931f249c 2021-05-14 12:16:14 +00:00
blakeblackshear 91325a8ab6 deploy: bf1a542afb 2021-05-13 12:42:06 +00:00
blakeblackshear af2bfbff1b deploy: f667bd9066 2021-05-12 11:56:36 +00:00
blakeblackshear 46c2874f4a deploy: 3eb0021207 2021-05-12 11:46:40 +00:00
blakeblackshear cc563cdc00 deploy: 6379f5cd5e 2021-05-12 11:45:50 +00:00
blakeblackshear 0d084d4f9c deploy: ad85beea91 2021-05-11 11:49:35 +00:00
blakeblackshear 7b16548ce1 deploy: 20a52bc4e6 2021-05-07 12:23:28 +00:00
blakeblackshear 4afebae33e deploy: 42410a260c 2021-04-07 18:51:05 +00:00
blakeblackshear 27a535d886 deploy: 9d2469549f 2021-04-07 18:28:07 +00:00
blakeblackshear 8b5d29a9bd deploy: d2bc2c20c1 2021-03-19 14:32:33 +00:00
blakeblackshear a34629d4fb deploy: 10c37a3036 2021-03-09 12:24:52 +00:00
blakeblackshear 8c5a473bed deploy: 00d14fa49f 2021-03-02 12:44:00 +00:00
blakeblackshear 62369c3fe6 deploy: 2f3339ba85 2021-02-23 13:39:11 +00:00
blakeblackshear 3d099bf047 deploy: 9433b50785 2021-02-22 13:21:51 +00:00
blakeblackshear 98e5d69e9c deploy: 31d408a746 2021-02-20 14:21:28 +00:00
blakeblackshear 2fb01f0be5 deploy: 54671fc522 2021-02-11 03:00:18 +00:00
blakeblackshear 5091720784 deploy: 53e3e6545d 2021-02-11 02:59:23 +00:00
blakeblackshear 8b9e6d8501 deploy: c065cb48f2 2021-02-03 12:57:24 +00:00
blakeblackshear acca456546 deploy: 45526a7652 2021-01-31 12:19:43 +00:00
blakeblackshear 2bd2bc9745 deploy: 9a96df0319 2021-01-31 04:16:31 +00:00
blakeblackshear 6252561705 deploy: e9b1618364 2021-01-29 12:44:24 +00:00
blakeblackshear 01f520aa35 deploy: faa8abb2b9 2021-01-28 14:23:08 +00:00
blakeblackshear 8013f8c27b deploy: a06212c15b63af749434fd71d53ecef2738f853a 2021-01-28 14:07:19 +00:00
blakeblackshear f6ca4bab21 deploy: f6cd2fc68e 2021-01-28 13:46:31 +00:00
blakeblackshear c87bd024bc deploy: dcf7209706 2021-01-28 12:45:00 +00:00
blakeblackshear 1947e574dc deploy: e8586d6459 2021-01-26 03:14:46 +00:00
blakeblackshear cbb31c4a14 deploy: 5ddfde2e72 2021-01-24 14:29:07 +00:00
blakeblackshear 87b3568a95 deploy: 84ed126db6 2021-01-22 14:03:31 +00:00
blakeblackshear c4367387df deploy: a76f54c326 2021-01-22 13:50:27 +00:00
blakeblackshear 090abb9044 deploy: b93d354c60 2021-01-22 13:34:40 +00:00
106 changed files with 949 additions and 3150 deletions
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README.md
diagram.png
.gitignore
debug
config/
*.pyc
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github: blakeblackshear
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---
name: Bug report
about: Create a report to help us improve
title: ''
labels: ''
assignees: ''
---
**Describe the bug**
A clear and concise description of what the bug is.
**Version of frigate**
What version are you using?
**Config file**
Include your full config file wrapped in back ticks.
```
config here
```
**Logs**
```
Include relevant log output here
```
**Frigate debug stats**
```
Output from frigate's /debug/stats endpoint
```
**FFprobe from your camera**
Run the following command and paste output below
```
ffprobe <stream_url>
```
**Screenshots**
If applicable, add screenshots to help explain your problem.
**Computer Hardware**
- OS: [e.g. Ubuntu, Windows]
- Virtualization: [e.g. Proxmox, Virtualbox]
- Coral Version: [e.g. USB, PCIe, None]
- Network Setup: [e.g. Wired, WiFi]
**Camera Info:**
- Manufacturer: [e.g. Dahua]
- Model: [e.g. IPC-HDW5231R-ZE]
- Resolution: [e.g. 720p]
- FPS: [e.g. 5]
**Additional context**
Add any other context about the problem here.
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*.pyc
debug
.vscode
config/config.yml
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/*!
Copyright (c) 2017 Jed Watson.
Licensed under the MIT License (MIT), see
http://jedwatson.github.io/classnames
*/
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/*! algoliasearch-lite.umd.js | 4.8.4 | © Algolia, inc. | https://github.com/algolia/algoliasearch-client-javascript */
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docs.frigate.video
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FROM ubuntu:18.04
LABEL maintainer "blakeb@blakeshome.com"
ENV DEBIAN_FRONTEND=noninteractive
# Install packages for apt repo
RUN apt -qq update && apt -qq install --no-install-recommends -y \
software-properties-common \
# apt-transport-https ca-certificates \
build-essential \
gnupg wget unzip tzdata \
# libcap-dev \
&& add-apt-repository ppa:deadsnakes/ppa -y \
&& apt -qq install --no-install-recommends -y \
python3.7 \
python3.7-dev \
python3-pip \
ffmpeg \
# VAAPI drivers for Intel hardware accel
libva-drm2 libva2 i965-va-driver vainfo \
&& python3.7 -m pip install -U pip \
&& python3.7 -m pip install -U wheel setuptools \
&& python3.7 -m pip install -U \
opencv-python-headless \
# python-prctl \
numpy \
imutils \
scipy \
psutil \
&& python3.7 -m pip install -U \
Flask \
paho-mqtt \
PyYAML \
matplotlib \
pyarrow \
click \
&& echo "deb https://packages.cloud.google.com/apt coral-edgetpu-stable main" > /etc/apt/sources.list.d/coral-edgetpu.list \
&& wget -q -O - https://packages.cloud.google.com/apt/doc/apt-key.gpg | apt-key add - \
&& apt -qq update \
&& echo "libedgetpu1-max libedgetpu/accepted-eula boolean true" | debconf-set-selections \
&& apt -qq install --no-install-recommends -y \
libedgetpu1-max \
## Tensorflow lite (python 3.7 only)
&& wget -q https://dl.google.com/coral/python/tflite_runtime-2.1.0.post1-cp37-cp37m-linux_x86_64.whl \
&& python3.7 -m pip install tflite_runtime-2.1.0.post1-cp37-cp37m-linux_x86_64.whl \
&& rm tflite_runtime-2.1.0.post1-cp37-cp37m-linux_x86_64.whl \
&& rm -rf /var/lib/apt/lists/* \
&& (apt-get autoremove -y; apt-get autoclean -y)
# get model and labels
RUN wget -q https://github.com/google-coral/edgetpu/raw/master/test_data/ssd_mobilenet_v2_coco_quant_postprocess_edgetpu.tflite -O /edgetpu_model.tflite --trust-server-names
COPY labelmap.txt /labelmap.txt
RUN wget -q https://github.com/google-coral/edgetpu/raw/master/test_data/ssd_mobilenet_v2_coco_quant_postprocess.tflite -O /cpu_model.tflite
RUN mkdir /cache /clips
WORKDIR /opt/frigate/
ADD frigate frigate/
COPY detect_objects.py .
COPY benchmark.py .
COPY process_clip.py .
CMD ["python3.7", "-u", "detect_objects.py"]
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The MIT License
Copyright (c) 2020 Blake Blackshear
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
-389
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# Frigate - NVR With Realtime Object Detection for IP Cameras
Uses OpenCV and Tensorflow to perform realtime object detection locally for IP cameras. Designed for integration with HomeAssistant or others via MQTT.
Use of a [Google Coral Accelerator](https://coral.ai/products/) is optional, but highly recommended. On my Intel i7 processor, I can process 2-3 FPS with the CPU. The Coral can process 100+ FPS with very low CPU load.
- Leverages multiprocessing heavily with an emphasis on realtime over processing every frame
- Uses a very low overhead motion detection to determine where to run object detection
- Object detection with Tensorflow runs in a separate process
- Object info is published over MQTT for integration into HomeAssistant as a binary sensor
- An endpoint is available to view an MJPEG stream for debugging, but should not be used continuously
![Diagram](diagram.png)
## Example video (from older version)
You see multiple bounding boxes because it draws bounding boxes from all frames in the past 1 second where a person was detected. Not all of the bounding boxes were from the current frame.
[![](http://img.youtube.com/vi/nqHbCtyo4dY/0.jpg)](http://www.youtube.com/watch?v=nqHbCtyo4dY "Frigate")
## Getting Started
Run the container with
```bash
docker run --rm \
-name blakeblackshear/frigate:stable \
--privileged \
--shm-size=512m \ # should work for a 2-3 cameras
-v /dev/bus/usb:/dev/bus/usb \
-v <path_to_config_dir>:/config:ro \
-v /etc/localtime:/etc/localtime:ro \
-p 5000:5000 \
-e FRIGATE_RTSP_PASSWORD='password' \
blakeblackshear/frigate:stable
```
Example docker-compose:
```yaml
frigate:
container_name: frigate
restart: unless-stopped
privileged: true
shm_size: '1g' # should work for 5-7 cameras
image: blakeblackshear/frigate:stable
volumes:
- /dev/bus/usb:/dev/bus/usb
- /etc/localtime:/etc/localtime:ro
- <path_to_config>:/config
- <path_to_directory_for_clips>:/clips
ports:
- "5000:5000"
environment:
FRIGATE_RTSP_PASSWORD: "password"
```
A `config.yml` file must exist in the `config` directory. See example [here](config/config.example.yml) and device specific info can be found [here](docs/DEVICES.md).
## Recommended Hardware
**Note: I may receive commissions for purchases made through links below.**
|Name|Inference Speed|Notes|
|----|---------------|-----|
|[Atomic Pi](https://amzn.to/2FKJHpu)|16ms|Best option for a dedicated low power board with a small number of cameras.|
|[Intel NUC NUC7i3BNK](https://amzn.to/2RDYZPe)|8-10ms|Best possible performance. Can handle 7+ cameras at 5fps depending on typical amounts of motion.|
|[BMAX B2 Plus](https://amzn.to/3cjgQ81)|10-12ms|Good balance of performance and cost. Also capable of running many other services at the same time as frigate.|
|[Minisforum GK41](https://amzn.to/32FyKhG)|9-10ms|Great alternative to a NUC. Easily handiles 4 1080p cameras.|
ARM boards are not officially supported at the moment due to some python dependencies that require modification to work on ARM devices. The Raspberry Pi4 gets about 16ms inference speeds, but the hardware acceleration for ffmpeg does not work for converting yuv420 to rgb24. The Atomic Pi is x86 and much more efficient.
Users have reported varying success in getting frigate to run in a VM. In some cases, the virtualization layer introduces a significant delay in communication with the Coral. If running virtualized in Proxmox, pass the USB card/interface to the virtual machine not the USB ID for faster inference speed.
## Integration with HomeAssistant
Setup a camera, binary_sensor, sensor and optionally automation as shown for each camera you define in frigate. Replace <camera_name> with the camera name as defined in the frigate `config.yml` (The `frigate_coral_fps` and `frigate_coral_inference` sensors only need to be defined once)
```
camera:
- name: <camera_name> Last Person
platform: mqtt
topic: frigate/<camera_name>/person/snapshot
- name: <camera_name> Last Car
platform: mqtt
topic: frigate/<camera_name>/car/snapshot
binary_sensor:
- name: <camera_name> Person
platform: mqtt
state_topic: "frigate/<camera_name>/person"
device_class: motion
availability_topic: "frigate/available"
sensor:
- platform: rest
name: Frigate Debug
resource: http://localhost:5000/debug/stats
scan_interval: 5
json_attributes:
- <camera_name>
- coral
value_template: 'OK'
- platform: template
sensors:
<camera_name>_fps:
value_template: '{{ states.sensor.frigate_debug.attributes["<camera_name>"]["fps"] }}'
unit_of_measurement: 'FPS'
<camera_name>_skipped_fps:
value_template: '{{ states.sensor.frigate_debug.attributes["<camera_name>"]["skipped_fps"] }}'
unit_of_measurement: 'FPS'
<camera_name>_detection_fps:
value_template: '{{ states.sensor.frigate_debug.attributes["<camera_name>"]["detection_fps"] }}'
unit_of_measurement: 'FPS'
frigate_coral_fps:
value_template: '{{ states.sensor.frigate_debug.attributes["coral"]["fps"] }}'
unit_of_measurement: 'FPS'
frigate_coral_inference:
value_template: '{{ states.sensor.frigate_debug.attributes["coral"]["inference_speed"] }}'
unit_of_measurement: 'ms'
automation:
- alias: Alert me if a person is detected while armed away
trigger:
platform: state
entity_id: binary_sensor.camera_person
from: 'off'
to: 'on'
condition:
- condition: state
entity_id: alarm_control_panel.home_alarm
state: armed_away
action:
- service: notify.user_telegram
data:
message: "A person was detected."
data:
photo:
- url: http://<ip>:5000/<camera_name>/person/best.jpg
caption: A person was detected.
```
## HTTP Endpoints
A web server is available on port 5000 with the following endpoints.
### `/<camera_name>`
An mjpeg stream for debugging. Keep in mind the mjpeg endpoint is for debugging only and will put additional load on the system when in use.
You can access a higher resolution mjpeg stream by appending `h=height-in-pixels` to the endpoint. For example `http://localhost:5000/back?h=1080`. You can also increase the FPS by appending `fps=frame-rate` to the URL such as `http://localhost:5000/back?fps=10` or both with `?fps=10&h=1000`
### `/<camera_name>/<object_name>/best.jpg[?h=300&crop=1]`
The best snapshot for any object type. It is a full resolution image by default.
Example parameters:
- `h=300`: resizes the image to 300 pixes tall
- `crop=1`: crops the image to the region of the detection rather than returning the entire image
### `/<camera_name>/latest.jpg[?h=300]`
The most recent frame that frigate has finished processing. It is a full resolution image by default.
Example parameters:
- `h=300`: resizes the image to 300 pixes tall
### `/debug/stats`
Contains some granular debug info that can be used for sensors in HomeAssistant. See details below.
## MQTT Messages
These are the MQTT messages generated by Frigate. The default topic_prefix is `frigate`, but can be changed in the config file.
### frigate/available
Designed to be used as an availability topic with HomeAssistant. Possible message are:
"online": published when frigate is running (on startup)
"offline": published right before frigate stops
### frigate/<camera_name>/<object_name>
Publishes `ON` or `OFF` and is designed to be used a as a binary sensor in HomeAssistant for whether or not that object type is detected.
### frigate/<camera_name>/<object_name>/snapshot
Publishes a jpeg encoded frame of the detected object type. When the object is no longer detected, the highest confidence image is published or the original image
is published again.
The height and crop of snapshots can be configured as shown in the example config.
### frigate/<camera_name>/events/start
Message published at the start of any tracked object. JSON looks as follows:
```json
{
"label": "person",
"score": 0.87890625,
"box": [
95,
155,
581,
1182
],
"area": 499122,
"region": [
0,
132,
1080,
1212
],
"frame_time": 1600208805.60284,
"centroid": [
338,
668
],
"id": "1600208805.60284-k1l43p",
"start_time": 1600208805.60284,
"top_score": 0.87890625,
"zones": [],
"score_history": [
0.87890625
],
"computed_score": 0.0,
"false_positive": true
}
```
### frigate/<camera_name>/events/end
Same as `frigate/<camera_name>/events/start`, but with an `end_time` property as well.
### frigate/<zone_name>/<object_name>
Publishes `ON` or `OFF` and is designed to be used a as a binary sensor in HomeAssistant for whether or not that object type is detected in the zone.
## Understanding min_score and threshold
`min_score` defines the minimum score for Frigate to begin tracking a detected object. Any single detection below `min_score` will be ignored as a false positive. `threshold` is based on the median of the history of scores for a tracked object. Consider the following frames when `min_score` is set to 0.6 and threshold is set to 0.85:
| Frame | Current Score | Score History | Computed Score | Detected Object |
| --- | --- | --- | --- | --- |
| 1 | 0.7 | 0.0, 0, 0.7 | 0.0 | No
| 2 | 0.55 | 0.0, 0.7, 0.0 | 0.0 | No
| 3 | 0.85 | 0.7, 0.0, 0.85 | 0.7 | No
| 4 | 0.90 | 0.7, 0.85, 0.95, 0.90 | 0.875 | Yes
| 5 | 0.88 | 0.7, 0.85, 0.95, 0.90, 0.88 | 0.88 | Yes
| 6 | 0.95 | 0.7, 0.85, 0.95, 0.90, 0.88, 0.95 | 0.89 | Yes
In frame 2, the score is below the `min_score` value, so frigate ignores it and it becomes a 0.0. The computed score is the median of the score history (padding to at least 3 values), and only when that computed score crosses the `threshold` is the object marked as a true positive. That happens in frame 4 in the example.
## Using a custom model or labels
Models for both CPU and EdgeTPU (Coral) are bundled in the image. You can use your own models with volume mounts:
- CPU Model: `/cpu_model.tflite`
- EdgeTPU Model: `/edgetpu_model.tflite`
- Labels: `/labelmap.txt`
### Customizing the Labelmap
The labelmap can be customized to your needs. A common reason to do this is to combine multiple object types that are easily confused when you don't need to be as granular such as car/truck. You must retain the same number of labels, but you can change the names. To change:
- Download the [COCO labelmap](https://dl.google.com/coral/canned_models/coco_labels.txt)
- Modify the label names as desired. For example, change `7 truck` to `7 car`
- Mount the new file at `/labelmap.txt` in the container with an additional volume
```
-v ./config/labelmap.txt:/labelmap.txt
```
## Recording Clips
**Note**: Previous versions of frigate included `-vsync drop` in input parameters. This is not compatible with FFmpeg's segment feature and must be removed from your input parameters if you have overrides set.
Frigate can save video clips without any CPU overhead for encoding by simply copying the stream directly with FFmpeg. It leverages FFmpeg's segment functionality to maintain a cache of 90 seconds of video for each camera. The cache files are written to disk at /cache and do not introduce memory overhead. When an object is being tracked, it will extend the cache to ensure it can assemble a clip when the event ends. Once the event ends, it again uses FFmpeg to assemble a clip by combining the video clips without any encoding by the CPU. Assembled clips are are saved to the /clips directory along with a json file containing the current information about the tracked object.
### Global Configuration Options
- `max_seconds`: This limits the size of the cache when an object is being tracked. If an object is stationary and being tracked for a long time, the cache files will expire and this value will be the maximum clip length for the *end* of the event. For example, if this is set to 300 seconds and an object is being tracked for 600 seconds, the clip will end up being the last 300 seconds. Defaults to 300 seconds.
### Per-camera Configuration Options
- `pre_capture`: Defines how much time should be included in the clip prior to the beginning of the event. Defaults to 30 seconds.
- `objects`: List of object types to save clips for. Object types here must be listed for tracking at the camera or global configuration. Defaults to all tracked objects.
## Google Coral Configuration
Frigate attempts to detect your Coral device automatically. If you have multiple Coral devices or a version that is not detected automatically, you can specify using the `tensorflow_device` config option.
## Masks and limiting detection to a certain area
The mask works by looking at the bottom center of any bounding box (first image, red dot below) and comparing that to your mask. If that red dot falls on an area of your mask that is black, the detection (and motion) will be ignored. The mask in the second image would limit detection on this camera to only objects that are in the front yard and not the street.
<a href="docs/example-mask-check-point.png"><img src="docs/example-mask-check-point.png" height="300"></a>
<a href="docs/example-mask.bmp"><img src="docs/example-mask.bmp" height="300"></a>
<a href="docs/example-mask-overlay.png"><img src="docs/example-mask-overlay.png" height="300"></a>
The following types of masks are supported:
- `base64`: Base64 encoded image file
- `poly`: List of x,y points like zone configuration
- `image`: Path to an image file in the config directory
`base64` and `image` masks must be the same aspect ratio as your camera.
## Zones
Zones allow you to define a specific area of the frame and apply additional filters for object types so you can determine whether or not an object is within a particular area. Zones cannot have the same name as a camera. If desired, a single zone can include multiple cameras if you have multiple cameras covering the same area. See the sample config for details on how to configure.
During testing, `draw_zones` can be set in the config to tell frigate to draw the zone on the frames so you can adjust as needed. The zone line will increase in thickness when any object enters the zone.
![Zone Example](docs/zone_example.jpg)
## Debug Info
```jsonc
{
/* Per Camera Stats */
"back": {
/***************
* Frames per second being consumed from your camera. If this is higher
* than it is supposed to be, you should set -r FPS in your input_args.
* camera_fps = process_fps + skipped_fps
***************/
"camera_fps": 5.0,
/***************
* Number of times detection is run per second. This can be higher than
* your camera FPS because frigate often looks at the same frame multiple times
* or in multiple locations
***************/
"detection_fps": 1.5,
/***************
* PID for the ffmpeg process that consumes this camera
***************/
"ffmpeg_pid": 27,
/***************
* Timestamps of frames in various parts of processing
***************/
"frame_info": {
/***************
* Timestamp of the frame frigate is running object detection on.
***************/
"detect": 1596994991.91426,
/***************
* Timestamp of the frame frigate is processing detected objects on.
* This is where MQTT messages are sent, zones are checked, etc.
***************/
"process": 1596994991.91426,
/***************
* Timestamp of the frame frigate last read from ffmpeg.
***************/
"read": 1596994991.91426
},
/***************
* PID for the process that runs detection for this camera
***************/
"pid": 34,
/***************
* Frames per second being processed by frigate.
***************/
"process_fps": 5.1,
/***************
* Timestamp when the detection process started looking for a frame. If this value stays constant
* for a long time, that means there aren't any frames in the frame queue.
***************/
"read_start": 1596994991.943814,
/***************
* Frames per second skip for processing by frigate.
***************/
"skipped_fps": 0.0
},
/* Coral Stats */
"coral": {
/***************
* Timestamp when object detection started. If this value stays non-zero and constant
* for a long time, that means the detection process is stuck.
***************/
"detection_start": 0.0,
/***************
* Frames per second of the Coral. This should be the sum of all detection_fps values from cameras.
***************/
"fps": 6.9,
/***************
* Time spent running object detection in milliseconds.
***************/
"inference_speed": 10.48,
/***************
* PID for the shared process that runs object detection on the Coral.
***************/
"pid": 25321
},
"plasma_store_rc": null // Return code for the plasma store. This should be null normally.
}
```
## Tips
- Lower the framerate of the video feed on the camera to reduce the CPU usage for capturing the feed. Not as effective, but you can also modify the `take_frame` [configuration](config/config.example.yml) for each camera to only analyze every other frame, or every third frame, etc.
- Hard code the resolution of each camera in your config if you are having difficulty starting frigate or if the initial ffprobe for camerea resolution fails or returns incorrect info. Example:
```
cameras:
back:
ffmpeg:
input: rtsp://<camera>
height: 1080
width: 1920
```
- Additional logging is available in the docker container - You can view the logs by running `docker logs -t frigate`
- Object configuration - Tracked objects types, sizes and thresholds can be defined globally and/or on a per camera basis. The global and camera object configuration is *merged*. For example, if you defined tracking person, car, and truck globally but modified your backyard camera to only track person, the global config would merge making the effective list for the backyard camera still contain person, car and truck. If you want precise object tracking per camera, best practice to put a minimal list of objects at the global level and expand objects on a per camera basis. Object threshold and area configuration will be used first from the camera object config (if defined) and then from the global config. See the [example config](config/config.example.yml) for more information.
## Troubleshooting
### "ffmpeg didnt return a frame. something is wrong"
Turn on logging for the camera by overriding the global_args and setting the log level to `info`:
```yaml
ffmpeg:
global_args:
- -hide_banner
- -loglevel
- info
```
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import os
from statistics import mean
import multiprocessing as mp
import numpy as np
import datetime
from frigate.edgetpu import LocalObjectDetector, EdgeTPUProcess, RemoteObjectDetector, load_labels
my_frame = np.expand_dims(np.full((300,300,3), 1, np.uint8), axis=0)
labels = load_labels('/labelmap.txt')
######
# Minimal same process runner
######
# object_detector = ObjectDetector()
# tensor_input = np.expand_dims(np.full((300,300,3), 0, np.uint8), axis=0)
# start = datetime.datetime.now().timestamp()
# frame_times = []
# for x in range(0, 1000):
# start_frame = datetime.datetime.now().timestamp()
# tensor_input[:] = my_frame
# detections = object_detector.detect_raw(tensor_input)
# parsed_detections = []
# for d in detections:
# if d[1] < 0.4:
# break
# parsed_detections.append((
# labels[int(d[0])],
# float(d[1]),
# (d[2], d[3], d[4], d[5])
# ))
# frame_times.append(datetime.datetime.now().timestamp()-start_frame)
# duration = datetime.datetime.now().timestamp()-start
# print(f"Processed for {duration:.2f} seconds.")
# print(f"Average frame processing time: {mean(frame_times)*1000:.2f}ms")
######
# Separate process runner
######
def start(id, num_detections, detection_queue):
object_detector = RemoteObjectDetector(str(id), '/labelmap.txt', detection_queue)
start = datetime.datetime.now().timestamp()
frame_times = []
for x in range(0, num_detections):
start_frame = datetime.datetime.now().timestamp()
detections = object_detector.detect(my_frame)
frame_times.append(datetime.datetime.now().timestamp()-start_frame)
duration = datetime.datetime.now().timestamp()-start
print(f"{id} - Processed for {duration:.2f} seconds.")
print(f"{id} - Average frame processing time: {mean(frame_times)*1000:.2f}ms")
edgetpu_process = EdgeTPUProcess()
# start(1, 1000, edgetpu_process.detect_lock, edgetpu_process.detect_ready, edgetpu_process.frame_ready)
####
# Multiple camera processes
####
camera_processes = []
for x in range(0, 10):
camera_process = mp.Process(target=start, args=(x, 100, edgetpu_process.detection_queue))
camera_process.daemon = True
camera_processes.append(camera_process)
start = datetime.datetime.now().timestamp()
for p in camera_processes:
p.start()
for p in camera_processes:
p.join()
duration = datetime.datetime.now().timestamp()-start
print(f"Total - Processed for {duration:.2f} seconds.")
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web_port: 5000
################
## Tell frigate to look for a specific EdgeTPU device. Useful if you want to run multiple instances of frigate
## on the same machine with multiple EdgeTPUs. https://coral.ai/docs/edgetpu/multiple-edgetpu/#using-the-tensorflow-lite-python-api
################
tensorflow_device: usb
mqtt:
host: mqtt.server.com
topic_prefix: frigate
# client_id: frigate # Optional -- set to override default client id of 'frigate' if running multiple instances
# user: username # Optional
#################
## Environment variables that begin with 'FRIGATE_' may be referenced in {}.
## password: '{FRIGATE_MQTT_PASSWORD}'
#################
# password: password # Optional
################
# Global configuration for saving clips
################
save_clips:
###########
# Maximum length of time to retain video during long events.
# If an object is being tracked for longer than this amount of time, the cache
# will begin to expire and the resulting clip will be the last x seconds of the event.
###########
max_seconds: 300
#################
# Default ffmpeg args. Optional and can be overwritten per camera.
# Should work with most RTSP cameras that send h264 video
# Built from the properties below with:
# "ffmpeg" + global_args + input_args + "-i" + input + output_args
#################
# ffmpeg:
# global_args:
# - -hide_banner
# - -loglevel
# - panic
# hwaccel_args: []
# input_args:
# - -avoid_negative_ts
# - make_zero
# - -fflags
# - nobuffer
# - -flags
# - low_delay
# - -strict
# - experimental
# - -fflags
# - +genpts+discardcorrupt
# - -vsync
# - drop
# - -rtsp_transport
# - tcp
# - -stimeout
# - '5000000'
# - -use_wallclock_as_timestamps
# - '1'
# output_args:
# - -f
# - rawvideo
# - -pix_fmt
# - rgb24
####################
# Global object configuration. Applies to all cameras
# unless overridden at the camera levels.
# Keys must be valid labels. By default, the model uses coco (https://dl.google.com/coral/canned_models/coco_labels.txt).
# All labels from the model are reported over MQTT. These values are used to filter out false positives.
# min_area (optional): minimum width*height of the bounding box for the detected object
# max_area (optional): maximum width*height of the bounding box for the detected object
# min_score (optional): minimum score for the object to initiate tracking
# threshold (optional): The minimum decimal percentage for tracked object's computed score to considered a true positive
####################
objects:
track:
- person
- car
- truck
filters:
person:
min_area: 5000
max_area: 100000
min_score: 0.5
threshold: 0.85
cameras:
back:
ffmpeg:
################
# Source passed to ffmpeg after the -i parameter. Supports anything compatible with OpenCV and FFmpeg.
# Environment variables that begin with 'FRIGATE_' may be referenced in {}
################
input: rtsp://viewer:{FRIGATE_RTSP_PASSWORD}@10.0.10.10:554/cam/realmonitor?channel=1&subtype=2
#################
# These values will override default values for just this camera
#################
# global_args: []
# hwaccel_args: []
# input_args: []
# output_args: []
################
## Optionally specify the resolution of the video feed. Frigate will try to auto detect if not specified
################
# height: 1280
# width: 720
################
## Specify the framerate of your camera
##
## NOTE: This should only be set in the event ffmpeg is unable to determine your camera's framerate
## on its own and the reported framerate for your camera in frigate is well over what is expected.
################
# fps: 5
################
## Optional mask. Must be the same aspect ratio as your video feed. Value is any of the following:
## - name of a file in the config directory
## - base64 encoded image prefixed with 'base64,' eg. 'base64,asfasdfasdf....'
## - polygon of x,y coordinates prefixed with 'poly,' eg. 'poly,0,900,1080,900,1080,1920,0,1920'
##
## The mask works by looking at the bottom center of the bounding box for the detected
## person in the image. If that pixel in the mask is a black pixel, it ignores it as a
## false positive. In my mask, the grass and driveway visible from my backdoor camera
## are white. The garage doors, sky, and trees (anywhere it would be impossible for a
## person to stand) are black.
##
## Masked areas are also ignored for motion detection.
################
# mask: back-mask.bmp
################
# Allows you to limit the framerate within frigate for cameras that do not support
# custom framerates. A value of 1 tells frigate to look at every frame, 2 every 2nd frame,
# 3 every 3rd frame, etc.
################
take_frame: 1
################
# The number of seconds to retain the highest scoring image for the best.jpg endpoint before allowing it
# to be replaced by a newer image. Defaults to 60 seconds.
################
best_image_timeout: 60
################
# MQTT settings
################
# mqtt:
# crop_to_region: True
# snapshot_height: 300
################
# Zones
################
zones:
#################
# Name of the zone
################
front_steps:
####################
# A list of x,y coordinates to define the polygon of the zone. The top
# left corner is 0,0. Can also be a comma separated string of all x,y coordinates combined.
# The same zone name can exist across multiple cameras if they have overlapping FOVs.
# An object is determined to be in the zone based on whether or not the bottom center
# of it's bounding box is within the polygon. The polygon must have at least 3 points.
# Coordinates can be generated at https://www.image-map.net/
####################
coordinates:
- 545,1077
- 747,939
- 788,805
################
# Zone level object filters. These are applied in addition to the global and camera filters
# and should be more restrictive than the global and camera filters. The global and camera
# filters are applied upstream.
################
filters:
person:
min_area: 5000
max_area: 100000
threshold: 0.8
################
# This will save a clip for each tracked object by frigate along with a json file that contains
# data related to the tracked object. This works by telling ffmpeg to write video segments to /cache
# from the video stream without re-encoding. Clips are then created by using ffmpeg to merge segments
# without re-encoding. The segments saved are unaltered from what frigate receives to avoid re-encoding.
# They do not contain bounding boxes. These are optimized to capture "false_positive" examples for improving frigate.
#
# NOTE: This feature does not work if you have "-vsync drop" configured in your input params.
# This will only work for camera feeds that can be copied into the mp4 container format without
# encoding such as h264. It may not work for some types of streams.
################
save_clips:
enabled: False
#########
# Number of seconds before the event to include in the clips
#########
pre_capture: 30
#########
# Objects to save clips for. Defaults to all tracked object types.
#########
# objects:
# - person
################
# Configuration for the snapshots in the debug view and mqtt
################
snapshots:
show_timestamp: True
draw_zones: False
################
# Camera level object config. This config is merged with the global config above.
################
objects:
track:
- person
filters:
person:
min_area: 5000
max_area: 100000
min_score: 0.5
threshold: 0.85
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<nav aria-label="Skip navigation links"><button type="button" tabindex="0" class="skipToContent_11B0">Skip to main content</button></nav><nav class="navbar navbar--fixed-top"><div class="navbar__inner"><div class="navbar__items"><div aria-label="Navigation bar toggle" class="navbar__toggle" role="button" tabindex="0"><svg aria-label="Menu" width="30" height="30" viewBox="0 0 30 30" role="img" focusable="false"><title>Menu</title><path stroke="currentColor" stroke-linecap="round" stroke-miterlimit="10" stroke-width="2" d="M4 7h22M4 15h22M4 23h22"></path></svg></div><a class="navbar__brand" href="/frigate/"><img src="/frigate/img/logo.svg" alt="Frigate" class="themedImage_YANc themedImage--light_3CMI navbar__logo"><img src="/frigate/img/logo-dark.svg" alt="Frigate" class="themedImage_YANc themedImage--dark_3ARp navbar__logo"><strong class="navbar__title">Frigate</strong></a><a class="navbar__item navbar__link" href="/frigate/">Docs</a></div><div class="navbar__items navbar__items--right"><a href="https://github.com/blakeblackshear/frigate" target="_blank" rel="noopener noreferrer" class="navbar__item navbar__link">GitHub</a><div class="react-toggle react-toggle--disabled displayOnlyInLargeViewport_2N3Q"><div class="react-toggle-track"><div class="react-toggle-track-check"><span class="toggle_3NWk">🌜</span></div><div class="react-toggle-track-x"><span class="toggle_3NWk">🌞</span></div></div><div class="react-toggle-thumb"></div><input type="checkbox" disabled="" aria-label="Dark mode toggle" class="react-toggle-screenreader-only"></div><button type="button" class="DocSearch DocSearch-Button" aria-label="Search"><div class="DocSearch-Button-Container"><svg width="20" height="20" class="DocSearch-Search-Icon" viewBox="0 0 20 20"><path d="M14.386 14.386l4.0877 4.0877-4.0877-4.0877c-2.9418 2.9419-7.7115 2.9419-10.6533 0-2.9419-2.9418-2.9419-7.7115 0-10.6533 2.9418-2.9419 7.7115-2.9419 10.6533 0 2.9419 2.9418 2.9419 7.7115 0 10.6533z" stroke="currentColor" fill="none" fill-rule="evenodd" stroke-linecap="round" stroke-linejoin="round"></path></svg><span class="DocSearch-Button-Placeholder">Search</span></div></button></div></div><div role="presentation" class="navbar-sidebar__backdrop"></div><div class="navbar-sidebar"><div class="navbar-sidebar__brand"><a class="navbar__brand" href="/frigate/"><img src="/frigate/img/logo.svg" alt="Frigate" class="themedImage_YANc themedImage--light_3CMI navbar__logo"><img src="/frigate/img/logo-dark.svg" alt="Frigate" class="themedImage_YANc themedImage--dark_3ARp navbar__logo"><strong class="navbar__title">Frigate</strong></a></div><div class="navbar-sidebar__items"><div class="menu"><ul class="menu__list"><li class="menu__list-item"><a class="menu__link" href="/frigate/">Docs</a></li><li class="menu__list-item"><a href="https://github.com/blakeblackshear/frigate" target="_blank" rel="noopener noreferrer" class="menu__link">GitHub</a></li></ul></div></div></div></nav><div class="main-wrapper"><div class="docPage_vMrn"><main class="docMainContainer_2iGs"><div class="container padding-vert--lg docItemWrapper_1bxp"><div class="row"><div class="col docItemCol_U38p"><div class="docItemContainer_a7m4"><article><header><h1 class="docTitle_Oumm">nVidia hardware decoder</h1></header><div class="markdown"><p>Certain nvidia cards include a hardware decoder, which can greatly improve the
performance of video decoding. In order to use NVDEC, a special build of
ffmpeg with NVDEC support is required. The special docker architecture &#x27;amd64nvidia&#x27;
includes this support for amd64 platforms. An aarch64 for the Jetson, which
also includes NVDEC may be added in the future.</p><h2><a aria-hidden="true" tabindex="-1" class="anchor enhancedAnchor_prK2" id="docker-setup"></a>Docker setup<a class="hash-link" href="#docker-setup" title="Direct link to heading">#</a></h2><h3><a aria-hidden="true" tabindex="-1" class="anchor enhancedAnchor_prK2" id="requirements"></a>Requirements<a class="hash-link" href="#requirements" title="Direct link to heading">#</a></h3><p><a href="https://www.nvidia.com/en-us/drivers/unix/" target="_blank" rel="noopener noreferrer">nVidia closed source driver</a> required to access NVDEC.
<a href="https://github.com/NVIDIA/nvidia-docker" target="_blank" rel="noopener noreferrer">nvidia-docker</a> required to pass NVDEC to docker.</p><h3><a aria-hidden="true" tabindex="-1" class="anchor enhancedAnchor_prK2" id="setting-up-docker-compose"></a>Setting up docker-compose<a class="hash-link" href="#setting-up-docker-compose" title="Direct link to heading">#</a></h3><p>In order to pass NVDEC, the docker engine must be set to <code>nvidia</code> and the environment variables
<code>NVIDIA_VISIBLE_DEVICES=all</code> and <code>NVIDIA_DRIVER_CAPABILITIES=compute,utility,video</code> must be set.</p><p>In a docker compose file, these lines need to be set:</p><div class="mdxCodeBlock_1zKU"><div class="codeBlockContent_actS"><div tabindex="0" class="prism-code language-undefined codeBlock_tuNs thin-scrollbar"><div class="codeBlockLines_3uvA" style="color:#bfc7d5;background-color:#292d3e"><div class="token-line" style="color:#bfc7d5"><span class="token plain">services:</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> frigate:</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> ...</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> image: blakeblackshear/frigate:stable-amd64nvidia</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> runtime: nvidia</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> environment:</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> - NVIDIA_VISIBLE_DEVICES=all</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> - NVIDIA_DRIVER_CAPABILITIES=compute,utility,video</span></div></div></div><button type="button" aria-label="Copy code to clipboard" class="copyButton_2GIj">Copy</button></div></div><h3><a aria-hidden="true" tabindex="-1" class="anchor enhancedAnchor_prK2" id="setting-up-the-configuration-file"></a>Setting up the configuration file<a class="hash-link" href="#setting-up-the-configuration-file" title="Direct link to heading">#</a></h3><p>In your frigate config.yml, you&#x27;ll need to set ffmpeg to use the hardware decoder.
The decoder you choose will depend on the input video.</p><p>A list of supported codecs (you can use <code>ffmpeg -decoders | grep cuvid</code> in the container to get a list)</p><div class="mdxCodeBlock_1zKU"><div class="codeBlockContent_actS"><div tabindex="0" class="prism-code language-undefined codeBlock_tuNs thin-scrollbar"><div class="codeBlockLines_3uvA" style="color:#bfc7d5;background-color:#292d3e"><div class="token-line" style="color:#bfc7d5"><span class="token plain"> V..... h263_cuvid Nvidia CUVID H263 decoder (codec h263)</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> V..... h264_cuvid Nvidia CUVID H264 decoder (codec h264)</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> V..... hevc_cuvid Nvidia CUVID HEVC decoder (codec hevc)</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> V..... mjpeg_cuvid Nvidia CUVID MJPEG decoder (codec mjpeg)</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> V..... mpeg1_cuvid Nvidia CUVID MPEG1VIDEO decoder (codec mpeg1video)</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> V..... mpeg2_cuvid Nvidia CUVID MPEG2VIDEO decoder (codec mpeg2video)</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> V..... mpeg4_cuvid Nvidia CUVID MPEG4 decoder (codec mpeg4)</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> V..... vc1_cuvid Nvidia CUVID VC1 decoder (codec vc1)</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> V..... vp8_cuvid Nvidia CUVID VP8 decoder (codec vp8)</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> V..... vp9_cuvid Nvidia CUVID VP9 decoder (codec vp9)</span></div></div></div><button type="button" aria-label="Copy code to clipboard" class="copyButton_2GIj">Copy</button></div></div><p>For example, for H265 video (hevc), you&#x27;ll select <code>hevc_cuvid</code>. Add
<code>-c:v hevc_cuvid</code> to your ffmpeg input arguments:</p><div class="mdxCodeBlock_1zKU"><div class="codeBlockContent_actS"><div tabindex="0" class="prism-code language-undefined codeBlock_tuNs thin-scrollbar"><div class="codeBlockLines_3uvA" style="color:#bfc7d5;background-color:#292d3e"><div class="token-line" style="color:#bfc7d5"><span class="token plain">ffmpeg:</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> input_args:</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> ...</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> - -c:v</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> - hevc_cuvid</span></div></div></div><button type="button" aria-label="Copy code to clipboard" class="copyButton_2GIj">Copy</button></div></div><p>If everything is working correctly, you should see a significant improvement in performance.
Verify that hardware decoding is working by running <code>nvidia-smi</code>, which should show the ffmpeg
processes:</p><div class="mdxCodeBlock_1zKU"><div class="codeBlockContent_actS"><div tabindex="0" class="prism-code language-undefined codeBlock_tuNs thin-scrollbar"><div class="codeBlockLines_3uvA" style="color:#bfc7d5;background-color:#292d3e"><div class="token-line" style="color:#bfc7d5"><span class="token plain">+-----------------------------------------------------------------------------+</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain">| NVIDIA-SMI 455.38 Driver Version: 455.38 CUDA Version: 11.1 |</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain">|-------------------------------+----------------------+----------------------+</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain">| GPU Name Persistence-M| Bus-Id Disp.A | Volatile Uncorr. ECC |</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain">| Fan Temp Perf Pwr:Usage/Cap| Memory-Usage | GPU-Util Compute M. |</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain">| | | MIG M. |</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain">|===============================+======================+======================|</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain">| 0 GeForce GTX 166... Off | 00000000:03:00.0 Off | N/A |</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain">| 38% 41C P2 36W / 125W | 2082MiB / 5942MiB | 5% Default |</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain">| | | N/A |</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain">+-------------------------------+----------------------+----------------------+</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain" style="display:inline-block">
</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain">+-----------------------------------------------------------------------------+</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain">| Processes: |</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain">| GPU GI CI PID Type Process name GPU Memory |</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain">| ID ID Usage |</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain">|=============================================================================|</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain">| 0 N/A N/A 12737 C ffmpeg 249MiB |</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain">| 0 N/A N/A 12751 C ffmpeg 249MiB |</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain">| 0 N/A N/A 12772 C ffmpeg 249MiB |</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain">| 0 N/A N/A 12775 C ffmpeg 249MiB |</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain">| 0 N/A N/A 12800 C ffmpeg 249MiB |</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain">| 0 N/A N/A 12811 C ffmpeg 417MiB |</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain">| 0 N/A N/A 12827 C ffmpeg 417MiB |</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain">+-----------------------------------------------------------------------------+</span></div></div></div><button type="button" aria-label="Copy code to clipboard" class="copyButton_2GIj">Copy</button></div></div><p>To further improve performance, you can set ffmpeg to skip frames in the output,
using the fps filter:</p><div class="mdxCodeBlock_1zKU"><div class="codeBlockContent_actS"><div tabindex="0" class="prism-code language-undefined codeBlock_tuNs thin-scrollbar"><div class="codeBlockLines_3uvA" style="color:#bfc7d5;background-color:#292d3e"><div class="token-line" style="color:#bfc7d5"><span class="token plain"> output_args:</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> - -filter:v</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> - fps=fps=5</span></div></div></div><button type="button" aria-label="Copy code to clipboard" class="copyButton_2GIj">Copy</button></div></div><p>This setting, for example, allows Frigate to consume my 10-15fps camera streams on
my relatively low powered Haswell machine with relatively low cpu usage.</p></div></article><div class="margin-vert--xl"><div class="row"><div class="col"><a href="https://github.com/blakeblackshear/frigate/edit/master/docs/docs/configuration/nvdec.md" target="_blank" rel="noreferrer noopener"><svg fill="currentColor" height="1.2em" width="1.2em" preserveAspectRatio="xMidYMid meet" role="img" viewBox="0 0 40 40" class="iconEdit_2LL7"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></div></div><div class="margin-vert--lg"><nav class="pagination-nav" aria-label="Blog list page navigation"><div class="pagination-nav__item"></div><div class="pagination-nav__item pagination-nav__item--next"></div></nav></div></div></div><div class="col col--3"><div class="tableOfContents_2xL- thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#docker-setup" class="table-of-contents__link">Docker setup</a><ul><li><a href="#requirements" class="table-of-contents__link">Requirements</a></li><li><a href="#setting-up-docker-compose" class="table-of-contents__link">Setting up docker-compose</a></li><li><a href="#setting-up-the-configuration-file" class="table-of-contents__link">Setting up the configuration file</a></li></ul></li></ul></div></div></div></div></main></div></div><footer class="footer footer--dark"><div class="container"><div class="row footer__links"><div class="col footer__col"><h4 class="footer__title">Community</h4><ul class="footer__items"><li class="footer__item"><a href="https://github.com/blakeblackshear/frigate" target="_blank" rel="noopener noreferrer" class="footer__link-item">GitHub</a></li><li class="footer__item"><a href="https://github.com/blakeblackshear/frigate/discussions" target="_blank" rel="noopener noreferrer" class="footer__link-item">Discussions</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2021 Blake Blackshear</div></div></div></footer></div>
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import os
import signal
import sys
import traceback
import signal
import cv2
import time
import datetime
import queue
import yaml
import threading
import multiprocessing as mp
import subprocess as sp
import numpy as np
import logging
from flask import Flask, Response, make_response, jsonify, request
import paho.mqtt.client as mqtt
from frigate.video import track_camera, get_ffmpeg_input, get_frame_shape, CameraCapture, start_or_restart_ffmpeg
from frigate.object_processing import TrackedObjectProcessor
from frigate.events import EventProcessor
from frigate.util import EventsPerSecond
from frigate.edgetpu import EdgeTPUProcess
FRIGATE_VARS = {k: v for k, v in os.environ.items() if k.startswith('FRIGATE_')}
with open('/config/config.yml') as f:
CONFIG = yaml.safe_load(f)
MQTT_HOST = CONFIG['mqtt']['host']
MQTT_PORT = CONFIG.get('mqtt', {}).get('port', 1883)
MQTT_TOPIC_PREFIX = CONFIG.get('mqtt', {}).get('topic_prefix', 'frigate')
MQTT_USER = CONFIG.get('mqtt', {}).get('user')
MQTT_PASS = CONFIG.get('mqtt', {}).get('password')
if not MQTT_PASS is None:
MQTT_PASS = MQTT_PASS.format(**FRIGATE_VARS)
MQTT_CLIENT_ID = CONFIG.get('mqtt', {}).get('client_id', 'frigate')
# Set the default FFmpeg config
FFMPEG_CONFIG = CONFIG.get('ffmpeg', {})
FFMPEG_DEFAULT_CONFIG = {
'global_args': FFMPEG_CONFIG.get('global_args',
['-hide_banner','-loglevel','panic']),
'hwaccel_args': FFMPEG_CONFIG.get('hwaccel_args',
[]),
'input_args': FFMPEG_CONFIG.get('input_args',
['-avoid_negative_ts', 'make_zero',
'-fflags', 'nobuffer',
'-flags', 'low_delay',
'-strict', 'experimental',
'-fflags', '+genpts+discardcorrupt',
'-rtsp_transport', 'tcp',
'-stimeout', '5000000',
'-use_wallclock_as_timestamps', '1']),
'output_args': FFMPEG_CONFIG.get('output_args',
['-f', 'rawvideo',
'-pix_fmt', 'rgb24'])
}
GLOBAL_OBJECT_CONFIG = CONFIG.get('objects', {})
WEB_PORT = CONFIG.get('web_port', 5000)
DEBUG = (CONFIG.get('debug', '0') == '1')
TENSORFLOW_DEVICE = CONFIG.get('tensorflow_device')
def start_plasma_store():
plasma_cmd = ['plasma_store', '-m', '400000000', '-s', '/tmp/plasma']
plasma_process = sp.Popen(plasma_cmd, stdout=sp.DEVNULL, stderr=sp.DEVNULL)
time.sleep(1)
rc = plasma_process.poll()
if rc is not None:
return None
return plasma_process
class CameraWatchdog(threading.Thread):
def __init__(self, camera_processes, config, tflite_process, tracked_objects_queue, plasma_process, stop_event):
threading.Thread.__init__(self)
self.camera_processes = camera_processes
self.config = config
self.tflite_process = tflite_process
self.tracked_objects_queue = tracked_objects_queue
self.plasma_process = plasma_process
self.stop_event = stop_event
def run(self):
time.sleep(10)
while True:
# wait a bit before checking
time.sleep(10)
if self.stop_event.is_set():
print(f"Exiting watchdog...")
break
now = datetime.datetime.now().timestamp()
# check the plasma process
rc = self.plasma_process.poll()
if rc != None:
print(f"plasma_process exited unexpectedly with {rc}")
self.plasma_process = start_plasma_store()
# check the detection process
detection_start = self.tflite_process.detection_start.value
if (detection_start > 0.0 and
now - detection_start > 10):
print("Detection appears to be stuck. Restarting detection process")
self.tflite_process.start_or_restart()
elif not self.tflite_process.detect_process.is_alive():
print("Detection appears to have stopped. Restarting detection process")
self.tflite_process.start_or_restart()
# check the camera processes
for name, camera_process in self.camera_processes.items():
process = camera_process['process']
if not process.is_alive():
print(f"Track process for {name} is not alive. Starting again...")
camera_process['process_fps'].value = 0.0
camera_process['detection_fps'].value = 0.0
camera_process['read_start'].value = 0.0
process = mp.Process(target=track_camera, args=(name, self.config[name], camera_process['frame_queue'],
camera_process['frame_shape'], self.tflite_process.detection_queue, self.tracked_objects_queue,
camera_process['process_fps'], camera_process['detection_fps'],
camera_process['read_start'], camera_process['detection_frame'], self.stop_event))
process.daemon = True
camera_process['process'] = process
process.start()
print(f"Track process started for {name}: {process.pid}")
if not camera_process['capture_thread'].is_alive():
frame_shape = camera_process['frame_shape']
frame_size = frame_shape[0] * frame_shape[1] * frame_shape[2]
ffmpeg_process = start_or_restart_ffmpeg(camera_process['ffmpeg_cmd'], frame_size)
camera_capture = CameraCapture(name, ffmpeg_process, frame_shape, camera_process['frame_queue'],
camera_process['take_frame'], camera_process['camera_fps'], camera_process['detection_frame'], self.stop_event)
camera_capture.start()
camera_process['ffmpeg_process'] = ffmpeg_process
camera_process['capture_thread'] = camera_capture
elif now - camera_process['capture_thread'].current_frame.value > 5:
print(f"No frames received from {name} in 5 seconds. Exiting ffmpeg...")
ffmpeg_process = camera_process['ffmpeg_process']
ffmpeg_process.terminate()
try:
print("Waiting for ffmpeg to exit gracefully...")
ffmpeg_process.communicate(timeout=30)
except sp.TimeoutExpired:
print("FFmpeg didnt exit. Force killing...")
ffmpeg_process.kill()
ffmpeg_process.communicate()
def main():
stop_event = threading.Event()
# connect to mqtt and setup last will
def on_connect(client, userdata, flags, rc):
print("On connect called")
if rc != 0:
if rc == 3:
print ("MQTT Server unavailable")
elif rc == 4:
print ("MQTT Bad username or password")
elif rc == 5:
print ("MQTT Not authorized")
else:
print ("Unable to connect to MQTT: Connection refused. Error code: " + str(rc))
# publish a message to signal that the service is running
client.publish(MQTT_TOPIC_PREFIX+'/available', 'online', retain=True)
client = mqtt.Client(client_id=MQTT_CLIENT_ID)
client.on_connect = on_connect
client.will_set(MQTT_TOPIC_PREFIX+'/available', payload='offline', qos=1, retain=True)
if not MQTT_USER is None:
client.username_pw_set(MQTT_USER, password=MQTT_PASS)
client.connect(MQTT_HOST, MQTT_PORT, 60)
client.loop_start()
plasma_process = start_plasma_store()
##
# Setup config defaults for cameras
##
for name, config in CONFIG['cameras'].items():
config['snapshots'] = {
'show_timestamp': config.get('snapshots', {}).get('show_timestamp', True),
'draw_zones': config.get('snapshots', {}).get('draw_zones', False)
}
config['zones'] = config.get('zones', {})
# Queue for cameras to push tracked objects to
tracked_objects_queue = mp.Queue()
# Queue for clip processing
event_queue = mp.Queue()
# Start the shared tflite process
tflite_process = EdgeTPUProcess(TENSORFLOW_DEVICE)
# start the camera processes
camera_processes = {}
for name, config in CONFIG['cameras'].items():
# Merge the ffmpeg config with the global config
ffmpeg = config.get('ffmpeg', {})
ffmpeg_input = get_ffmpeg_input(ffmpeg['input'])
ffmpeg_global_args = ffmpeg.get('global_args', FFMPEG_DEFAULT_CONFIG['global_args'])
ffmpeg_hwaccel_args = ffmpeg.get('hwaccel_args', FFMPEG_DEFAULT_CONFIG['hwaccel_args'])
ffmpeg_input_args = ffmpeg.get('input_args', FFMPEG_DEFAULT_CONFIG['input_args'])
ffmpeg_output_args = ffmpeg.get('output_args', FFMPEG_DEFAULT_CONFIG['output_args'])
if not config.get('fps') is None:
ffmpeg_output_args = ["-r", str(config.get('fps'))] + ffmpeg_output_args
if config.get('save_clips', {}).get('enabled', False):
ffmpeg_output_args = [
"-f",
"segment",
"-segment_time",
"10",
"-segment_format",
"mp4",
"-reset_timestamps",
"1",
"-strftime",
"1",
"-c",
"copy",
"-an",
"-map",
"0",
f"/cache/{name}-%Y%m%d%H%M%S.mp4"
] + ffmpeg_output_args
ffmpeg_cmd = (['ffmpeg'] +
ffmpeg_global_args +
ffmpeg_hwaccel_args +
ffmpeg_input_args +
['-i', ffmpeg_input] +
ffmpeg_output_args +
['pipe:'])
if 'width' in config and 'height' in config:
frame_shape = (config['height'], config['width'], 3)
else:
frame_shape = get_frame_shape(ffmpeg_input)
frame_size = frame_shape[0] * frame_shape[1] * frame_shape[2]
take_frame = config.get('take_frame', 1)
detection_frame = mp.Value('d', 0.0)
ffmpeg_process = start_or_restart_ffmpeg(ffmpeg_cmd, frame_size)
frame_queue = mp.Queue()
camera_fps = EventsPerSecond()
camera_fps.start()
camera_capture = CameraCapture(name, ffmpeg_process, frame_shape, frame_queue, take_frame, camera_fps, detection_frame, stop_event)
camera_capture.start()
camera_processes[name] = {
'camera_fps': camera_fps,
'take_frame': take_frame,
'process_fps': mp.Value('d', 0.0),
'detection_fps': mp.Value('d', 0.0),
'detection_frame': detection_frame,
'read_start': mp.Value('d', 0.0),
'ffmpeg_process': ffmpeg_process,
'ffmpeg_cmd': ffmpeg_cmd,
'frame_queue': frame_queue,
'frame_shape': frame_shape,
'capture_thread': camera_capture
}
# merge global object config into camera object config
camera_objects_config = config.get('objects', {})
# get objects to track for camera
objects_to_track = camera_objects_config.get('track', GLOBAL_OBJECT_CONFIG.get('track', ['person']))
# merge object filters
global_object_filters = GLOBAL_OBJECT_CONFIG.get('filters', {})
camera_object_filters = camera_objects_config.get('filters', {})
objects_with_config = set().union(global_object_filters.keys(), camera_object_filters.keys())
object_filters = {}
for obj in objects_with_config:
object_filters[obj] = {**global_object_filters.get(obj, {}), **camera_object_filters.get(obj, {})}
config['objects'] = {
'track': objects_to_track,
'filters': object_filters
}
camera_process = mp.Process(target=track_camera, args=(name, config, frame_queue, frame_shape,
tflite_process.detection_queue, tracked_objects_queue, camera_processes[name]['process_fps'],
camera_processes[name]['detection_fps'],
camera_processes[name]['read_start'], camera_processes[name]['detection_frame'], stop_event))
camera_process.daemon = True
camera_processes[name]['process'] = camera_process
for name, camera_process in camera_processes.items():
camera_process['process'].start()
print(f"Camera_process started for {name}: {camera_process['process'].pid}")
event_processor = EventProcessor(CONFIG, camera_processes, '/cache', '/clips', event_queue, stop_event)
event_processor.start()
object_processor = TrackedObjectProcessor(CONFIG['cameras'], client, MQTT_TOPIC_PREFIX, tracked_objects_queue, event_queue, stop_event)
object_processor.start()
camera_watchdog = CameraWatchdog(camera_processes, CONFIG['cameras'], tflite_process, tracked_objects_queue, plasma_process, stop_event)
camera_watchdog.start()
def receiveSignal(signalNumber, frame):
print('Received:', signalNumber)
stop_event.set()
event_processor.join()
object_processor.join()
camera_watchdog.join()
for name, camera_process in camera_processes.items():
camera_process['capture_thread'].join()
rc = camera_watchdog.plasma_process.poll()
if rc == None:
camera_watchdog.plasma_process.terminate()
sys.exit()
signal.signal(signal.SIGTERM, receiveSignal)
signal.signal(signal.SIGINT, receiveSignal)
# create a flask app that encodes frames a mjpeg on demand
app = Flask(__name__)
log = logging.getLogger('werkzeug')
log.setLevel(logging.ERROR)
@app.route('/')
def ishealthy():
# return a healh
return "Frigate is running. Alive and healthy!"
@app.route('/debug/stack')
def processor_stack():
frame = sys._current_frames().get(object_processor.ident, None)
if frame:
return "<br>".join(traceback.format_stack(frame)), 200
else:
return "no frame found", 200
@app.route('/debug/print_stack')
def print_stack():
pid = int(request.args.get('pid', 0))
if pid == 0:
return "missing pid", 200
else:
os.kill(pid, signal.SIGUSR1)
return "check logs", 200
@app.route('/debug/stats')
def stats():
stats = {}
total_detection_fps = 0
for name, camera_stats in camera_processes.items():
total_detection_fps += camera_stats['detection_fps'].value
capture_thread = camera_stats['capture_thread']
stats[name] = {
'camera_fps': round(capture_thread.fps.eps(), 2),
'process_fps': round(camera_stats['process_fps'].value, 2),
'skipped_fps': round(capture_thread.skipped_fps.eps(), 2),
'detection_fps': round(camera_stats['detection_fps'].value, 2),
'read_start': camera_stats['read_start'].value,
'pid': camera_stats['process'].pid,
'ffmpeg_pid': camera_stats['ffmpeg_process'].pid,
'frame_info': {
'read': capture_thread.current_frame.value,
'detect': camera_stats['detection_frame'].value,
'process': object_processor.camera_data[name]['current_frame_time']
}
}
stats['coral'] = {
'fps': round(total_detection_fps, 2),
'inference_speed': round(tflite_process.avg_inference_speed.value*1000, 2),
'detection_start': tflite_process.detection_start.value,
'pid': tflite_process.detect_process.pid
}
rc = camera_watchdog.plasma_process.poll()
stats['plasma_store_rc'] = rc
return jsonify(stats)
@app.route('/<camera_name>/<label>/best.jpg')
def best(camera_name, label):
if camera_name in CONFIG['cameras']:
best_object = object_processor.get_best(camera_name, label)
best_frame = best_object.get('frame', np.zeros((720,1280,3), np.uint8))
crop = bool(request.args.get('crop', 0, type=int))
if crop:
region = best_object.get('region', [0,0,300,300])
best_frame = best_frame[region[1]:region[3], region[0]:region[2]]
height = int(request.args.get('h', str(best_frame.shape[0])))
width = int(height*best_frame.shape[1]/best_frame.shape[0])
best_frame = cv2.resize(best_frame, dsize=(width, height), interpolation=cv2.INTER_AREA)
best_frame = cv2.cvtColor(best_frame, cv2.COLOR_RGB2BGR)
ret, jpg = cv2.imencode('.jpg', best_frame)
response = make_response(jpg.tobytes())
response.headers['Content-Type'] = 'image/jpg'
return response
else:
return "Camera named {} not found".format(camera_name), 404
@app.route('/<camera_name>')
def mjpeg_feed(camera_name):
fps = int(request.args.get('fps', '3'))
height = int(request.args.get('h', '360'))
if camera_name in CONFIG['cameras']:
# return a multipart response
return Response(imagestream(camera_name, fps, height),
mimetype='multipart/x-mixed-replace; boundary=frame')
else:
return "Camera named {} not found".format(camera_name), 404
@app.route('/<camera_name>/latest.jpg')
def latest_frame(camera_name):
if camera_name in CONFIG['cameras']:
# max out at specified FPS
frame = object_processor.get_current_frame(camera_name)
if frame is None:
frame = np.zeros((720,1280,3), np.uint8)
height = int(request.args.get('h', str(frame.shape[0])))
width = int(height*frame.shape[1]/frame.shape[0])
frame = cv2.resize(frame, dsize=(width, height), interpolation=cv2.INTER_AREA)
frame = cv2.cvtColor(frame, cv2.COLOR_RGB2BGR)
ret, jpg = cv2.imencode('.jpg', frame)
response = make_response(jpg.tobytes())
response.headers['Content-Type'] = 'image/jpg'
return response
else:
return "Camera named {} not found".format(camera_name), 404
def imagestream(camera_name, fps, height):
while True:
# max out at specified FPS
time.sleep(1/fps)
frame = object_processor.get_current_frame(camera_name)
if frame is None:
frame = np.zeros((height,int(height*16/9),3), np.uint8)
width = int(height*frame.shape[1]/frame.shape[0])
frame = cv2.resize(frame, dsize=(width, height), interpolation=cv2.INTER_LINEAR)
frame = cv2.cvtColor(frame, cv2.COLOR_RGB2BGR)
ret, jpg = cv2.imencode('.jpg', frame)
yield (b'--frame\r\n'
b'Content-Type: image/jpeg\r\n\r\n' + jpg.tobytes() + b'\r\n\r\n')
app.run(host='0.0.0.0', port=WEB_PORT, debug=False)
object_processor.join()
plasma_process.terminate()
if __name__ == '__main__':
main()
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# Configuration Examples
### Default (most RTSP cameras)
This is the default ffmpeg command and should work with most RTSP cameras that send h264 video
```yaml
ffmpeg:
global_args:
- -hide_banner
- -loglevel
- panic
hwaccel_args: []
input_args:
- -avoid_negative_ts
- make_zero
- -fflags
- nobuffer
- -flags
- low_delay
- -strict
- experimental
- -fflags
- +genpts+discardcorrupt
- -vsync
- drop
- -rtsp_transport
- tcp
- -stimeout
- '5000000'
- -use_wallclock_as_timestamps
- '1'
output_args:
- -vf
- mpdecimate
- -f
- rawvideo
- -pix_fmt
- rgb24
```
### RTMP Cameras
The input parameters need to be adjusted for RTMP cameras
```yaml
ffmpeg:
input_args:
- -avoid_negative_ts
- make_zero
- -fflags
- nobuffer
- -flags
- low_delay
- -strict
- experimental
- -fflags
- +genpts+discardcorrupt
- -vsync
- drop
- -use_wallclock_as_timestamps
- '1'
```
### Hardware Acceleration
Intel Quicksync
```yaml
ffmpeg:
hwaccel_args:
- -hwaccel
- vaapi
- -hwaccel_device
- /dev/dri/renderD128
- -hwaccel_output_format
- yuv420p
```
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import os
import datetime
import hashlib
import multiprocessing as mp
from abc import ABC, abstractmethod
import numpy as np
import pyarrow.plasma as plasma
import tflite_runtime.interpreter as tflite
from tflite_runtime.interpreter import load_delegate
from frigate.util import EventsPerSecond, listen
def load_labels(path, encoding='utf-8'):
"""Loads labels from file (with or without index numbers).
Args:
path: path to label file.
encoding: label file encoding.
Returns:
Dictionary mapping indices to labels.
"""
with open(path, 'r', encoding=encoding) as f:
lines = f.readlines()
if not lines:
return {}
if lines[0].split(' ', maxsplit=1)[0].isdigit():
pairs = [line.split(' ', maxsplit=1) for line in lines]
return {int(index): label.strip() for index, label in pairs}
else:
return {index: line.strip() for index, line in enumerate(lines)}
class ObjectDetector(ABC):
@abstractmethod
def detect(self, tensor_input, threshold = .4):
pass
class LocalObjectDetector(ObjectDetector):
def __init__(self, tf_device=None, labels=None):
self.fps = EventsPerSecond()
if labels is None:
self.labels = {}
else:
self.labels = load_labels(labels)
device_config = {"device": "usb"}
if not tf_device is None:
device_config = {"device": tf_device}
edge_tpu_delegate = None
try:
print(f"Attempting to load TPU as {device_config['device']}")
edge_tpu_delegate = load_delegate('libedgetpu.so.1.0', device_config)
print("TPU found")
except ValueError:
try:
print(f"Attempting to load TPU as pci:0")
edge_tpu_delegate = load_delegate('libedgetpu.so.1.0', {"device": "pci:0"})
print("PCIe TPU found")
except ValueError:
print("No EdgeTPU detected. Falling back to CPU.")
if edge_tpu_delegate is None:
self.interpreter = tflite.Interpreter(
model_path='/cpu_model.tflite')
else:
self.interpreter = tflite.Interpreter(
model_path='/edgetpu_model.tflite',
experimental_delegates=[edge_tpu_delegate])
self.interpreter.allocate_tensors()
self.tensor_input_details = self.interpreter.get_input_details()
self.tensor_output_details = self.interpreter.get_output_details()
def detect(self, tensor_input, threshold=.4):
detections = []
raw_detections = self.detect_raw(tensor_input)
for d in raw_detections:
if d[1] < threshold:
break
detections.append((
self.labels[int(d[0])],
float(d[1]),
(d[2], d[3], d[4], d[5])
))
self.fps.update()
return detections
def detect_raw(self, tensor_input):
self.interpreter.set_tensor(self.tensor_input_details[0]['index'], tensor_input)
self.interpreter.invoke()
boxes = np.squeeze(self.interpreter.get_tensor(self.tensor_output_details[0]['index']))
label_codes = np.squeeze(self.interpreter.get_tensor(self.tensor_output_details[1]['index']))
scores = np.squeeze(self.interpreter.get_tensor(self.tensor_output_details[2]['index']))
detections = np.zeros((20,6), np.float32)
for i, score in enumerate(scores):
detections[i] = [label_codes[i], score, boxes[i][0], boxes[i][1], boxes[i][2], boxes[i][3]]
return detections
def run_detector(detection_queue, avg_speed, start, tf_device):
print(f"Starting detection process: {os.getpid()}")
listen()
plasma_client = plasma.connect("/tmp/plasma")
object_detector = LocalObjectDetector(tf_device=tf_device)
while True:
object_id_str = detection_queue.get()
object_id_hash = hashlib.sha1(str.encode(object_id_str))
object_id = plasma.ObjectID(object_id_hash.digest())
object_id_out = plasma.ObjectID(hashlib.sha1(str.encode(f"out-{object_id_str}")).digest())
input_frame = plasma_client.get(object_id, timeout_ms=0)
if input_frame is plasma.ObjectNotAvailable:
continue
# detect and put the output in the plasma store
start.value = datetime.datetime.now().timestamp()
plasma_client.put(object_detector.detect_raw(input_frame), object_id_out)
duration = datetime.datetime.now().timestamp()-start.value
start.value = 0.0
avg_speed.value = (avg_speed.value*9 + duration)/10
class EdgeTPUProcess():
def __init__(self, tf_device=None):
self.detection_queue = mp.Queue()
self.avg_inference_speed = mp.Value('d', 0.01)
self.detection_start = mp.Value('d', 0.0)
self.detect_process = None
self.tf_device = tf_device
self.start_or_restart()
def start_or_restart(self):
self.detection_start.value = 0.0
if (not self.detect_process is None) and self.detect_process.is_alive():
self.detect_process.terminate()
print("Waiting for detection process to exit gracefully...")
self.detect_process.join(timeout=30)
if self.detect_process.exitcode is None:
print("Detection process didnt exit. Force killing...")
self.detect_process.kill()
self.detect_process.join()
self.detect_process = mp.Process(target=run_detector, args=(self.detection_queue, self.avg_inference_speed, self.detection_start, self.tf_device))
self.detect_process.daemon = True
self.detect_process.start()
class RemoteObjectDetector():
def __init__(self, name, labels, detection_queue):
self.labels = load_labels(labels)
self.name = name
self.fps = EventsPerSecond()
self.plasma_client = plasma.connect("/tmp/plasma")
self.detection_queue = detection_queue
def detect(self, tensor_input, threshold=.4):
detections = []
now = f"{self.name}-{str(datetime.datetime.now().timestamp())}"
object_id_frame = plasma.ObjectID(hashlib.sha1(str.encode(now)).digest())
object_id_detections = plasma.ObjectID(hashlib.sha1(str.encode(f"out-{now}")).digest())
self.plasma_client.put(tensor_input, object_id_frame)
self.detection_queue.put(now)
raw_detections = self.plasma_client.get(object_id_detections, timeout_ms=10000)
if raw_detections is plasma.ObjectNotAvailable:
self.plasma_client.delete([object_id_frame])
return detections
for d in raw_detections:
if d[1] < threshold:
break
detections.append((
self.labels[int(d[0])],
float(d[1]),
(d[2], d[3], d[4], d[5])
))
self.plasma_client.delete([object_id_frame, object_id_detections])
self.fps.update()
return detections
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import os
import time
import psutil
import threading
from collections import defaultdict
import json
import datetime
import subprocess as sp
import queue
class EventProcessor(threading.Thread):
def __init__(self, config, camera_processes, cache_dir, clip_dir, event_queue, stop_event):
threading.Thread.__init__(self)
self.config = config
self.camera_processes = camera_processes
self.cache_dir = cache_dir
self.clip_dir = clip_dir
self.cached_clips = {}
self.event_queue = event_queue
self.events_in_process = {}
self.stop_event = stop_event
def refresh_cache(self):
cached_files = os.listdir(self.cache_dir)
files_in_use = []
for process_data in self.camera_processes.values():
try:
ffmpeg_process = psutil.Process(pid=process_data['ffmpeg_process'].pid)
flist = ffmpeg_process.open_files()
if flist:
for nt in flist:
if nt.path.startswith(self.cache_dir):
files_in_use.append(nt.path.split('/')[-1])
except:
continue
for f in cached_files:
if f in files_in_use or f in self.cached_clips:
continue
camera = '-'.join(f.split('-')[:-1])
start_time = datetime.datetime.strptime(f.split('-')[-1].split('.')[0], '%Y%m%d%H%M%S')
ffprobe_cmd = " ".join([
'ffprobe',
'-v',
'error',
'-show_entries',
'format=duration',
'-of',
'default=noprint_wrappers=1:nokey=1',
f"{os.path.join(self.cache_dir,f)}"
])
p = sp.Popen(ffprobe_cmd, stdout=sp.PIPE, shell=True)
(output, err) = p.communicate()
p_status = p.wait()
if p_status == 0:
duration = float(output.decode('utf-8').strip())
else:
print(f"bad file: {f}")
os.remove(os.path.join(self.cache_dir,f))
continue
self.cached_clips[f] = {
'path': f,
'camera': camera,
'start_time': start_time.timestamp(),
'duration': duration
}
if len(self.events_in_process) > 0:
earliest_event = min(self.events_in_process.values(), key=lambda x:x['start_time'])['start_time']
else:
earliest_event = datetime.datetime.now().timestamp()
# if the earliest event exceeds the max seconds, cap it
max_seconds = self.config.get('save_clips', {}).get('max_seconds', 300)
if datetime.datetime.now().timestamp()-earliest_event > max_seconds:
earliest_event = datetime.datetime.now().timestamp()-max_seconds
for f, data in list(self.cached_clips.items()):
if earliest_event-90 > data['start_time']+data['duration']:
del self.cached_clips[f]
os.remove(os.path.join(self.cache_dir,f))
def create_clip(self, camera, event_data, pre_capture):
# get all clips from the camera with the event sorted
sorted_clips = sorted([c for c in self.cached_clips.values() if c['camera'] == camera], key = lambda i: i['start_time'])
while sorted_clips[-1]['start_time'] + sorted_clips[-1]['duration'] < event_data['end_time']:
time.sleep(5)
self.refresh_cache()
# get all clips from the camera with the event sorted
sorted_clips = sorted([c for c in self.cached_clips.values() if c['camera'] == camera], key = lambda i: i['start_time'])
playlist_start = event_data['start_time']-pre_capture
playlist_end = event_data['end_time']+5
playlist_lines = []
for clip in sorted_clips:
# clip ends before playlist start time, skip
if clip['start_time']+clip['duration'] < playlist_start:
continue
# clip starts after playlist ends, finish
if clip['start_time'] > playlist_end:
break
playlist_lines.append(f"file '{os.path.join(self.cache_dir,clip['path'])}'")
# if this is the starting clip, add an inpoint
if clip['start_time'] < playlist_start:
playlist_lines.append(f"inpoint {int(playlist_start-clip['start_time'])}")
# if this is the ending clip, add an outpoint
if clip['start_time']+clip['duration'] > playlist_end:
playlist_lines.append(f"outpoint {int(playlist_end-clip['start_time'])}")
clip_name = f"{camera}-{event_data['id']}"
ffmpeg_cmd = [
'ffmpeg',
'-y',
'-protocol_whitelist',
'pipe,file',
'-f',
'concat',
'-safe',
'0',
'-i',
'-',
'-c',
'copy',
f"{os.path.join(self.clip_dir, clip_name)}.mp4"
]
p = sp.run(ffmpeg_cmd, input="\n".join(playlist_lines), encoding='ascii', capture_output=True)
if p.returncode != 0:
print(p.stderr)
return
with open(f"{os.path.join(self.clip_dir, clip_name)}.json", 'w') as outfile:
json.dump(event_data, outfile)
def run(self):
while True:
if self.stop_event.is_set():
print(f"Exiting event processor...")
break
try:
event_type, camera, event_data = self.event_queue.get(timeout=10)
except queue.Empty:
if not self.stop_event.is_set():
self.refresh_cache()
continue
self.refresh_cache()
save_clips_config = self.config['cameras'][camera].get('save_clips', {})
# if save clips is not enabled for this camera, just continue
if not save_clips_config.get('enabled', False):
continue
# if specific objects are listed for this camera, only save clips for them
if 'objects' in save_clips_config:
if not event_data['label'] in save_clips_config['objects']:
continue
if event_type == 'start':
self.events_in_process[event_data['id']] = event_data
if event_type == 'end':
if len(self.cached_clips) > 0 and not event_data['false_positive']:
self.create_clip(camera, event_data, save_clips_config.get('pre_capture', 30))
del self.events_in_process[event_data['id']]
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import cv2
import imutils
import numpy as np
class MotionDetector():
def __init__(self, frame_shape, mask, resize_factor=4):
self.resize_factor = resize_factor
self.motion_frame_size = (int(frame_shape[0]/resize_factor), int(frame_shape[1]/resize_factor))
self.avg_frame = np.zeros(self.motion_frame_size, np.float)
self.avg_delta = np.zeros(self.motion_frame_size, np.float)
self.motion_frame_count = 0
self.frame_counter = 0
resized_mask = cv2.resize(mask, dsize=(self.motion_frame_size[1], self.motion_frame_size[0]), interpolation=cv2.INTER_LINEAR)
self.mask = np.where(resized_mask==[0])
def detect(self, frame):
motion_boxes = []
# resize frame
resized_frame = cv2.resize(frame, dsize=(self.motion_frame_size[1], self.motion_frame_size[0]), interpolation=cv2.INTER_LINEAR)
# convert to grayscale
gray = cv2.cvtColor(resized_frame, cv2.COLOR_BGR2GRAY)
# mask frame
gray[self.mask] = [255]
# it takes ~30 frames to establish a baseline
# dont bother looking for motion
if self.frame_counter < 30:
self.frame_counter += 1
else:
# compare to average
frameDelta = cv2.absdiff(gray, cv2.convertScaleAbs(self.avg_frame))
# compute the average delta over the past few frames
# the alpha value can be modified to configure how sensitive the motion detection is.
# higher values mean the current frame impacts the delta a lot, and a single raindrop may
# register as motion, too low and a fast moving person wont be detected as motion
# this also assumes that a person is in the same location across more than a single frame
cv2.accumulateWeighted(frameDelta, self.avg_delta, 0.2)
# compute the threshold image for the current frame
current_thresh = cv2.threshold(frameDelta, 25, 255, cv2.THRESH_BINARY)[1]
# black out everything in the avg_delta where there isnt motion in the current frame
avg_delta_image = cv2.convertScaleAbs(self.avg_delta)
avg_delta_image[np.where(current_thresh==[0])] = [0]
# then look for deltas above the threshold, but only in areas where there is a delta
# in the current frame. this prevents deltas from previous frames from being included
thresh = cv2.threshold(avg_delta_image, 25, 255, cv2.THRESH_BINARY)[1]
# dilate the thresholded image to fill in holes, then find contours
# on thresholded image
thresh = cv2.dilate(thresh, None, iterations=2)
cnts = cv2.findContours(thresh, cv2.RETR_EXTERNAL, cv2.CHAIN_APPROX_SIMPLE)
cnts = imutils.grab_contours(cnts)
# loop over the contours
for c in cnts:
# if the contour is big enough, count it as motion
contour_area = cv2.contourArea(c)
if contour_area > 100:
x, y, w, h = cv2.boundingRect(c)
motion_boxes.append((x*self.resize_factor, y*self.resize_factor, (x+w)*self.resize_factor, (y+h)*self.resize_factor))
if len(motion_boxes) > 0:
self.motion_frame_count += 1
# TODO: this really depends on FPS
if self.motion_frame_count >= 10:
# only average in the current frame if the difference persists for at least 3 frames
cv2.accumulateWeighted(gray, self.avg_frame, 0.2)
else:
# when no motion, just keep averaging the frames together
cv2.accumulateWeighted(gray, self.avg_frame, 0.2)
self.motion_frame_count = 0
return motion_boxes
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import json
import hashlib
import datetime
import time
import copy
import cv2
import threading
import queue
import copy
import numpy as np
from collections import Counter, defaultdict
import itertools
import pyarrow.plasma as plasma
import matplotlib.pyplot as plt
from frigate.util import draw_box_with_label, PlasmaFrameManager
from frigate.edgetpu import load_labels
from typing import Callable, Dict
from statistics import mean, median
PATH_TO_LABELS = '/labelmap.txt'
LABELS = load_labels(PATH_TO_LABELS)
cmap = plt.cm.get_cmap('tab10', len(LABELS.keys()))
COLOR_MAP = {}
for key, val in LABELS.items():
COLOR_MAP[val] = tuple(int(round(255 * c)) for c in cmap(key)[:3])
def zone_filtered(obj, object_config):
object_name = obj['label']
object_filters = object_config.get('filters', {})
if object_name in object_filters:
obj_settings = object_filters[object_name]
# if the min area is larger than the
# detected object, don't add it to detected objects
if obj_settings.get('min_area',-1) > obj['area']:
return True
# if the detected object is larger than the
# max area, don't add it to detected objects
if obj_settings.get('max_area', 24000000) < obj['area']:
return True
# if the score is lower than the threshold, skip
if obj_settings.get('threshold', 0) > obj['computed_score']:
return True
return False
# Maintains the state of a camera
class CameraState():
def __init__(self, name, config, frame_manager):
self.name = name
self.config = config
self.frame_manager = frame_manager
self.best_objects = {}
self.object_status = defaultdict(lambda: 'OFF')
self.tracked_objects = {}
self.zone_objects = defaultdict(lambda: [])
self.current_frame = np.zeros((720,1280,3), np.uint8)
self.current_frame_time = 0.0
self.previous_frame_id = None
self.callbacks = defaultdict(lambda: [])
def false_positive(self, obj):
# once a true positive, always a true positive
if not obj.get('false_positive', True):
return False
threshold = self.config['objects'].get('filters', {}).get(obj['label'], {}).get('threshold', 0.85)
if obj['computed_score'] < threshold:
return True
return False
def compute_score(self, obj):
scores = obj['score_history'][:]
# pad with zeros if you dont have at least 3 scores
if len(scores) < 3:
scores += [0.0]*(3 - len(scores))
return median(scores)
def on(self, event_type: str, callback: Callable[[Dict], None]):
self.callbacks[event_type].append(callback)
def update(self, frame_time, tracked_objects):
self.current_frame_time = frame_time
# get the new frame and delete the old frame
frame_id = f"{self.name}{frame_time}"
self.current_frame = self.frame_manager.get(frame_id)
if not self.previous_frame_id is None:
self.frame_manager.delete(self.previous_frame_id)
self.previous_frame_id = frame_id
current_ids = tracked_objects.keys()
previous_ids = self.tracked_objects.keys()
removed_ids = list(set(previous_ids).difference(current_ids))
new_ids = list(set(current_ids).difference(previous_ids))
updated_ids = list(set(current_ids).intersection(previous_ids))
for id in new_ids:
self.tracked_objects[id] = tracked_objects[id]
self.tracked_objects[id]['zones'] = []
# start the score history
self.tracked_objects[id]['score_history'] = [self.tracked_objects[id]['score']]
# calculate if this is a false positive
self.tracked_objects[id]['computed_score'] = self.compute_score(self.tracked_objects[id])
self.tracked_objects[id]['false_positive'] = self.false_positive(self.tracked_objects[id])
# call event handlers
for c in self.callbacks['start']:
c(self.name, tracked_objects[id])
for id in updated_ids:
self.tracked_objects[id].update(tracked_objects[id])
# if the object is not in the current frame, add a 0.0 to the score history
if self.tracked_objects[id]['frame_time'] != self.current_frame_time:
self.tracked_objects[id]['score_history'].append(0.0)
else:
self.tracked_objects[id]['score_history'].append(self.tracked_objects[id]['score'])
# only keep the last 10 scores
if len(self.tracked_objects[id]['score_history']) > 10:
self.tracked_objects[id]['score_history'] = self.tracked_objects[id]['score_history'][-10:]
# calculate if this is a false positive
self.tracked_objects[id]['computed_score'] = self.compute_score(self.tracked_objects[id])
self.tracked_objects[id]['false_positive'] = self.false_positive(self.tracked_objects[id])
# call event handlers
for c in self.callbacks['update']:
c(self.name, self.tracked_objects[id])
for id in removed_ids:
# publish events to mqtt
self.tracked_objects[id]['end_time'] = frame_time
for c in self.callbacks['end']:
c(self.name, self.tracked_objects[id])
del self.tracked_objects[id]
# check to see if the objects are in any zones
for obj in self.tracked_objects.values():
current_zones = []
bottom_center = (obj['centroid'][0], obj['box'][3])
# check each zone
for name, zone in self.config['zones'].items():
contour = zone['contour']
# check if the object is in the zone and not filtered
if (cv2.pointPolygonTest(contour, bottom_center, False) >= 0
and not zone_filtered(obj, zone.get('filters', {}))):
current_zones.append(name)
obj['zones'] = current_zones
# draw on the frame
if not self.current_frame is None:
# draw the bounding boxes on the frame
for obj in self.tracked_objects.values():
thickness = 2
color = COLOR_MAP[obj['label']]
if obj['frame_time'] != frame_time:
thickness = 1
color = (255,0,0)
# draw the bounding boxes on the frame
box = obj['box']
draw_box_with_label(self.current_frame, box[0], box[1], box[2], box[3], obj['label'], f"{int(obj['score']*100)}% {int(obj['area'])}", thickness=thickness, color=color)
# draw the regions on the frame
region = obj['region']
cv2.rectangle(self.current_frame, (region[0], region[1]), (region[2], region[3]), (0,255,0), 1)
if self.config['snapshots']['show_timestamp']:
time_to_show = datetime.datetime.fromtimestamp(frame_time).strftime("%m/%d/%Y %H:%M:%S")
cv2.putText(self.current_frame, time_to_show, (10, 30), cv2.FONT_HERSHEY_SIMPLEX, fontScale=.8, color=(255, 255, 255), thickness=2)
if self.config['snapshots']['draw_zones']:
for name, zone in self.config['zones'].items():
thickness = 8 if any([name in obj['zones'] for obj in self.tracked_objects.values()]) else 2
cv2.drawContours(self.current_frame, [zone['contour']], -1, zone['color'], thickness)
# maintain best objects
for obj in self.tracked_objects.values():
object_type = obj['label']
# if the object wasn't seen on the current frame, skip it
if obj['frame_time'] != self.current_frame_time or obj['false_positive']:
continue
obj_copy = copy.deepcopy(obj)
if object_type in self.best_objects:
current_best = self.best_objects[object_type]
now = datetime.datetime.now().timestamp()
# if the object is a higher score than the current best score
# or the current object is older than desired, use the new object
if obj_copy['score'] > current_best['score'] or (now - current_best['frame_time']) > self.config.get('best_image_timeout', 60):
obj_copy['frame'] = np.copy(self.current_frame)
self.best_objects[object_type] = obj_copy
for c in self.callbacks['snapshot']:
c(self.name, self.best_objects[object_type])
else:
obj_copy['frame'] = np.copy(self.current_frame)
self.best_objects[object_type] = obj_copy
for c in self.callbacks['snapshot']:
c(self.name, self.best_objects[object_type])
# update overall camera state for each object type
obj_counter = Counter()
for obj in self.tracked_objects.values():
if not obj['false_positive']:
obj_counter[obj['label']] += 1
# report on detected objects
for obj_name, count in obj_counter.items():
new_status = 'ON' if count > 0 else 'OFF'
if new_status != self.object_status[obj_name]:
self.object_status[obj_name] = new_status
for c in self.callbacks['object_status']:
c(self.name, obj_name, new_status)
# expire any objects that are ON and no longer detected
expired_objects = [obj_name for obj_name, status in self.object_status.items() if status == 'ON' and not obj_name in obj_counter]
for obj_name in expired_objects:
self.object_status[obj_name] = 'OFF'
for c in self.callbacks['object_status']:
c(self.name, obj_name, 'OFF')
for c in self.callbacks['snapshot']:
c(self.name, self.best_objects[obj_name])
class TrackedObjectProcessor(threading.Thread):
def __init__(self, camera_config, client, topic_prefix, tracked_objects_queue, event_queue, stop_event):
threading.Thread.__init__(self)
self.camera_config = camera_config
self.client = client
self.topic_prefix = topic_prefix
self.tracked_objects_queue = tracked_objects_queue
self.event_queue = event_queue
self.stop_event = stop_event
self.camera_states: Dict[str, CameraState] = {}
self.plasma_client = PlasmaFrameManager(self.stop_event)
def start(camera, obj):
# publish events to mqtt
self.client.publish(f"{self.topic_prefix}/{camera}/events/start", json.dumps(obj), retain=False)
self.event_queue.put(('start', camera, obj))
def update(camera, obj):
pass
def end(camera, obj):
self.client.publish(f"{self.topic_prefix}/{camera}/events/end", json.dumps(obj), retain=False)
self.event_queue.put(('end', camera, obj))
def snapshot(camera, obj):
if not 'frame' in obj:
return
best_frame = cv2.cvtColor(obj['frame'], cv2.COLOR_RGB2BGR)
mqtt_config = self.camera_config[camera].get('mqtt', {'crop_to_region': False})
if mqtt_config.get('crop_to_region'):
region = obj['region']
best_frame = best_frame[region[1]:region[3], region[0]:region[2]]
if 'snapshot_height' in mqtt_config:
height = int(mqtt_config['snapshot_height'])
width = int(height*best_frame.shape[1]/best_frame.shape[0])
best_frame = cv2.resize(best_frame, dsize=(width, height), interpolation=cv2.INTER_AREA)
ret, jpg = cv2.imencode('.jpg', best_frame)
if ret:
jpg_bytes = jpg.tobytes()
self.client.publish(f"{self.topic_prefix}/{camera}/{obj['label']}/snapshot", jpg_bytes, retain=True)
def object_status(camera, object_name, status):
self.client.publish(f"{self.topic_prefix}/{camera}/{object_name}", status, retain=False)
for camera in self.camera_config.keys():
camera_state = CameraState(camera, self.camera_config[camera], self.plasma_client)
camera_state.on('start', start)
camera_state.on('update', update)
camera_state.on('end', end)
camera_state.on('snapshot', snapshot)
camera_state.on('object_status', object_status)
self.camera_states[camera] = camera_state
self.camera_data = defaultdict(lambda: {
'best_objects': {},
'object_status': defaultdict(lambda: defaultdict(lambda: 'OFF')),
'tracked_objects': {},
'current_frame': np.zeros((720,1280,3), np.uint8),
'current_frame_time': 0.0,
'object_id': None
})
# {
# 'zone_name': {
# 'person': ['camera_1', 'camera_2']
# }
# }
self.zone_data = defaultdict(lambda: defaultdict(lambda: set()))
# set colors for zones
all_zone_names = set([zone for config in self.camera_config.values() for zone in config['zones'].keys()])
zone_colors = {}
colors = plt.cm.get_cmap('tab10', len(all_zone_names))
for i, zone in enumerate(all_zone_names):
zone_colors[zone] = tuple(int(round(255 * c)) for c in colors(i)[:3])
# create zone contours
for camera_config in self.camera_config.values():
for zone_name, zone_config in camera_config['zones'].items():
zone_config['color'] = zone_colors[zone_name]
coordinates = zone_config['coordinates']
if isinstance(coordinates, list):
zone_config['contour'] = np.array([[int(p.split(',')[0]), int(p.split(',')[1])] for p in coordinates])
elif isinstance(coordinates, str):
points = coordinates.split(',')
zone_config['contour'] = np.array([[int(points[i]), int(points[i+1])] for i in range(0, len(points), 2)])
else:
print(f"Unable to parse zone coordinates for {zone_name} - {camera}")
def get_best(self, camera, label):
best_objects = self.camera_states[camera].best_objects
if label in best_objects:
return best_objects[label]
else:
return {}
def get_current_frame(self, camera):
return self.camera_states[camera].current_frame
def run(self):
while True:
if self.stop_event.is_set():
print(f"Exiting object processor...")
break
try:
camera, frame_time, current_tracked_objects = self.tracked_objects_queue.get(True, 10)
except queue.Empty:
continue
camera_state = self.camera_states[camera]
camera_state.update(frame_time, current_tracked_objects)
# update zone status for each label
for zone in camera_state.config['zones'].keys():
# get labels for current camera and all labels in current zone
labels_for_camera = set([obj['label'] for obj in camera_state.tracked_objects.values() if zone in obj['zones'] and not obj['false_positive']])
labels_to_check = labels_for_camera | set(self.zone_data[zone].keys())
# for each label in zone
for label in labels_to_check:
camera_list = self.zone_data[zone][label]
# remove or add the camera to the list for the current label
previous_state = len(camera_list) > 0
if label in labels_for_camera:
camera_list.add(camera_state.name)
elif camera_state.name in camera_list:
camera_list.remove(camera_state.name)
new_state = len(camera_list) > 0
# if the value is changing, send over MQTT
if previous_state == False and new_state == True:
self.client.publish(f"{self.topic_prefix}/{zone}/{label}", 'ON', retain=False)
elif previous_state == True and new_state == False:
self.client.publish(f"{self.topic_prefix}/{zone}/{label}", 'OFF', retain=False)
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import time
import datetime
import threading
import cv2
import itertools
import copy
import numpy as np
import random
import string
import multiprocessing as mp
from collections import defaultdict
from scipy.spatial import distance as dist
from frigate.util import draw_box_with_label, calculate_region
class ObjectTracker():
def __init__(self, max_disappeared):
self.tracked_objects = {}
self.disappeared = {}
self.max_disappeared = max_disappeared
def register(self, index, obj):
rand_id = ''.join(random.choices(string.ascii_lowercase + string.digits, k=6))
id = f"{obj['frame_time']}-{rand_id}"
obj['id'] = id
obj['start_time'] = obj['frame_time']
obj['top_score'] = obj['score']
self.tracked_objects[id] = obj
self.disappeared[id] = 0
def deregister(self, id):
del self.tracked_objects[id]
del self.disappeared[id]
def update(self, id, new_obj):
self.disappeared[id] = 0
self.tracked_objects[id].update(new_obj)
if self.tracked_objects[id]['score'] > self.tracked_objects[id]['top_score']:
self.tracked_objects[id]['top_score'] = self.tracked_objects[id]['score']
def match_and_update(self, frame_time, new_objects):
# group by name
new_object_groups = defaultdict(lambda: [])
for obj in new_objects:
new_object_groups[obj[0]].append({
'label': obj[0],
'score': obj[1],
'box': obj[2],
'area': obj[3],
'region': obj[4],
'frame_time': frame_time
})
# update any tracked objects with labels that are not
# seen in the current objects and deregister if needed
for obj in list(self.tracked_objects.values()):
if not obj['label'] in new_object_groups:
if self.disappeared[obj['id']] >= self.max_disappeared:
self.deregister(obj['id'])
else:
self.disappeared[obj['id']] += 1
if len(new_objects) == 0:
return
# track objects for each label type
for label, group in new_object_groups.items():
current_objects = [o for o in self.tracked_objects.values() if o['label'] == label]
current_ids = [o['id'] for o in current_objects]
current_centroids = np.array([o['centroid'] for o in current_objects])
# compute centroids of new objects
for obj in group:
centroid_x = int((obj['box'][0]+obj['box'][2]) / 2.0)
centroid_y = int((obj['box'][1]+obj['box'][3]) / 2.0)
obj['centroid'] = (centroid_x, centroid_y)
if len(current_objects) == 0:
for index, obj in enumerate(group):
self.register(index, obj)
return
new_centroids = np.array([o['centroid'] for o in group])
# compute the distance between each pair of tracked
# centroids and new centroids, respectively -- our
# goal will be to match each new centroid to an existing
# object centroid
D = dist.cdist(current_centroids, new_centroids)
# in order to perform this matching we must (1) find the
# smallest value in each row and then (2) sort the row
# indexes based on their minimum values so that the row
# with the smallest value is at the *front* of the index
# list
rows = D.min(axis=1).argsort()
# next, we perform a similar process on the columns by
# finding the smallest value in each column and then
# sorting using the previously computed row index list
cols = D.argmin(axis=1)[rows]
# in order to determine if we need to update, register,
# or deregister an object we need to keep track of which
# of the rows and column indexes we have already examined
usedRows = set()
usedCols = set()
# loop over the combination of the (row, column) index
# tuples
for (row, col) in zip(rows, cols):
# if we have already examined either the row or
# column value before, ignore it
if row in usedRows or col in usedCols:
continue
# otherwise, grab the object ID for the current row,
# set its new centroid, and reset the disappeared
# counter
objectID = current_ids[row]
self.update(objectID, group[col])
# indicate that we have examined each of the row and
# column indexes, respectively
usedRows.add(row)
usedCols.add(col)
# compute the column index we have NOT yet examined
unusedRows = set(range(0, D.shape[0])).difference(usedRows)
unusedCols = set(range(0, D.shape[1])).difference(usedCols)
# in the event that the number of object centroids is
# equal or greater than the number of input centroids
# we need to check and see if some of these objects have
# potentially disappeared
if D.shape[0] >= D.shape[1]:
for row in unusedRows:
id = current_ids[row]
if self.disappeared[id] >= self.max_disappeared:
self.deregister(id)
else:
self.disappeared[id] += 1
# if the number of input centroids is greater
# than the number of existing object centroids we need to
# register each new input centroid as a trackable object
else:
for col in unusedCols:
self.register(col, group[col])
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from abc import ABC, abstractmethod
import datetime
import time
import signal
import traceback
import collections
import numpy as np
import cv2
import threading
import matplotlib.pyplot as plt
import hashlib
import pyarrow.plasma as plasma
def draw_box_with_label(frame, x_min, y_min, x_max, y_max, label, info, thickness=2, color=None, position='ul'):
if color is None:
color = (0,0,255)
display_text = "{}: {}".format(label, info)
cv2.rectangle(frame, (x_min, y_min), (x_max, y_max), color, thickness)
font_scale = 0.5
font = cv2.FONT_HERSHEY_SIMPLEX
# get the width and height of the text box
size = cv2.getTextSize(display_text, font, fontScale=font_scale, thickness=2)
text_width = size[0][0]
text_height = size[0][1]
line_height = text_height + size[1]
# set the text start position
if position == 'ul':
text_offset_x = x_min
text_offset_y = 0 if y_min < line_height else y_min - (line_height+8)
elif position == 'ur':
text_offset_x = x_max - (text_width+8)
text_offset_y = 0 if y_min < line_height else y_min - (line_height+8)
elif position == 'bl':
text_offset_x = x_min
text_offset_y = y_max
elif position == 'br':
text_offset_x = x_max - (text_width+8)
text_offset_y = y_max
# make the coords of the box with a small padding of two pixels
textbox_coords = ((text_offset_x, text_offset_y), (text_offset_x + text_width + 2, text_offset_y + line_height))
cv2.rectangle(frame, textbox_coords[0], textbox_coords[1], color, cv2.FILLED)
cv2.putText(frame, display_text, (text_offset_x, text_offset_y + line_height - 3), font, fontScale=font_scale, color=(0, 0, 0), thickness=2)
def calculate_region(frame_shape, xmin, ymin, xmax, ymax, multiplier=2):
# size is larger than longest edge
size = int(max(xmax-xmin, ymax-ymin)*multiplier)
# dont go any smaller than 300
if size < 300:
size = 300
# if the size is too big to fit in the frame
if size > min(frame_shape[0], frame_shape[1]):
size = min(frame_shape[0], frame_shape[1])
# x_offset is midpoint of bounding box minus half the size
x_offset = int((xmax-xmin)/2.0+xmin-size/2.0)
# if outside the image
if x_offset < 0:
x_offset = 0
elif x_offset > (frame_shape[1]-size):
x_offset = (frame_shape[1]-size)
# y_offset is midpoint of bounding box minus half the size
y_offset = int((ymax-ymin)/2.0+ymin-size/2.0)
# if outside the image
if y_offset < 0:
y_offset = 0
elif y_offset > (frame_shape[0]-size):
y_offset = (frame_shape[0]-size)
return (x_offset, y_offset, x_offset+size, y_offset+size)
def intersection(box_a, box_b):
return (
max(box_a[0], box_b[0]),
max(box_a[1], box_b[1]),
min(box_a[2], box_b[2]),
min(box_a[3], box_b[3])
)
def area(box):
return (box[2]-box[0] + 1)*(box[3]-box[1] + 1)
def intersection_over_union(box_a, box_b):
# determine the (x, y)-coordinates of the intersection rectangle
intersect = intersection(box_a, box_b)
# compute the area of intersection rectangle
inter_area = max(0, intersect[2] - intersect[0] + 1) * max(0, intersect[3] - intersect[1] + 1)
if inter_area == 0:
return 0.0
# compute the area of both the prediction and ground-truth
# rectangles
box_a_area = (box_a[2] - box_a[0] + 1) * (box_a[3] - box_a[1] + 1)
box_b_area = (box_b[2] - box_b[0] + 1) * (box_b[3] - box_b[1] + 1)
# compute the intersection over union by taking the intersection
# area and dividing it by the sum of prediction + ground-truth
# areas - the interesection area
iou = inter_area / float(box_a_area + box_b_area - inter_area)
# return the intersection over union value
return iou
def clipped(obj, frame_shape):
# if the object is within 5 pixels of the region border, and the region is not on the edge
# consider the object to be clipped
box = obj[2]
region = obj[4]
if ((region[0] > 5 and box[0]-region[0] <= 5) or
(region[1] > 5 and box[1]-region[1] <= 5) or
(frame_shape[1]-region[2] > 5 and region[2]-box[2] <= 5) or
(frame_shape[0]-region[3] > 5 and region[3]-box[3] <= 5)):
return True
else:
return False
class EventsPerSecond:
def __init__(self, max_events=1000):
self._start = None
self._max_events = max_events
self._timestamps = []
def start(self):
self._start = datetime.datetime.now().timestamp()
def update(self):
if self._start is None:
self.start()
self._timestamps.append(datetime.datetime.now().timestamp())
# truncate the list when it goes 100 over the max_size
if len(self._timestamps) > self._max_events+100:
self._timestamps = self._timestamps[(1-self._max_events):]
def eps(self, last_n_seconds=10):
if self._start is None:
self.start()
# compute the (approximate) events in the last n seconds
now = datetime.datetime.now().timestamp()
seconds = min(now-self._start, last_n_seconds)
return len([t for t in self._timestamps if t > (now-last_n_seconds)]) / seconds
def print_stack(sig, frame):
traceback.print_stack(frame)
def listen():
signal.signal(signal.SIGUSR1, print_stack)
class FrameManager(ABC):
@abstractmethod
def get(self, name, timeout_ms=0):
pass
@abstractmethod
def put(self, name, frame):
pass
@abstractmethod
def delete(self, name):
pass
class DictFrameManager(FrameManager):
def __init__(self):
self.frames = {}
def get(self, name, timeout_ms=0):
return self.frames.get(name)
def put(self, name, frame):
self.frames[name] = frame
def delete(self, name):
del self.frames[name]
class PlasmaFrameManager(FrameManager):
def __init__(self, stop_event=None):
self.stop_event = stop_event
self.connect()
def connect(self):
while True:
if self.stop_event != None and self.stop_event.is_set():
return
try:
self.plasma_client = plasma.connect("/tmp/plasma")
return
except:
print(f"TrackedObjectProcessor: unable to connect plasma client")
time.sleep(10)
def get(self, name, timeout_ms=0):
object_id = plasma.ObjectID(hashlib.sha1(str.encode(name)).digest())
while True:
if self.stop_event != None and self.stop_event.is_set():
return
try:
frame = self.plasma_client.get(object_id, timeout_ms=timeout_ms)
if frame is plasma.ObjectNotAvailable:
return None
return frame
except:
self.connect()
time.sleep(1)
def put(self, name, frame):
object_id = plasma.ObjectID(hashlib.sha1(str.encode(name)).digest())
while True:
if self.stop_event != None and self.stop_event.is_set():
return
try:
self.plasma_client.put(frame, object_id)
return
except Exception as e:
print(f"Failed to put in plasma: {e}")
self.connect()
time.sleep(1)
def delete(self, name):
object_id = plasma.ObjectID(hashlib.sha1(str.encode(name)).digest())
while True:
if self.stop_event != None and self.stop_event.is_set():
return
try:
self.plasma_client.delete([object_id])
return
except:
self.connect()
time.sleep(1)
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import os
import time
import datetime
import cv2
import queue
import threading
import ctypes
import pyarrow.plasma as plasma
import multiprocessing as mp
import subprocess as sp
import numpy as np
import copy
import itertools
import json
import base64
from typing import Dict, List
from collections import defaultdict
from frigate.util import draw_box_with_label, area, calculate_region, clipped, intersection_over_union, intersection, EventsPerSecond, listen, FrameManager, PlasmaFrameManager
from frigate.objects import ObjectTracker
from frigate.edgetpu import RemoteObjectDetector
from frigate.motion import MotionDetector
def get_frame_shape(source):
ffprobe_cmd = " ".join([
'ffprobe',
'-v',
'panic',
'-show_error',
'-show_streams',
'-of',
'json',
'"'+source+'"'
])
print(ffprobe_cmd)
p = sp.Popen(ffprobe_cmd, stdout=sp.PIPE, shell=True)
(output, err) = p.communicate()
p_status = p.wait()
info = json.loads(output)
print(info)
video_info = [s for s in info['streams'] if s['codec_type'] == 'video'][0]
if video_info['height'] != 0 and video_info['width'] != 0:
return (video_info['height'], video_info['width'], 3)
# fallback to using opencv if ffprobe didnt succeed
video = cv2.VideoCapture(source)
ret, frame = video.read()
frame_shape = frame.shape
video.release()
return frame_shape
def get_ffmpeg_input(ffmpeg_input):
frigate_vars = {k: v for k, v in os.environ.items() if k.startswith('FRIGATE_')}
return ffmpeg_input.format(**frigate_vars)
def filtered(obj, objects_to_track, object_filters, mask=None):
object_name = obj[0]
if not object_name in objects_to_track:
return True
if object_name in object_filters:
obj_settings = object_filters[object_name]
# if the min area is larger than the
# detected object, don't add it to detected objects
if obj_settings.get('min_area',-1) > obj[3]:
return True
# if the detected object is larger than the
# max area, don't add it to detected objects
if obj_settings.get('max_area', 24000000) < obj[3]:
return True
# if the score is lower than the min_score, skip
if obj_settings.get('min_score', 0) > obj[1]:
return True
# compute the coordinates of the object and make sure
# the location isnt outside the bounds of the image (can happen from rounding)
y_location = min(int(obj[2][3]), len(mask)-1)
x_location = min(int((obj[2][2]-obj[2][0])/2.0)+obj[2][0], len(mask[0])-1)
# if the object is in a masked location, don't add it to detected objects
if (not mask is None) and (mask[y_location][x_location] == 0):
return True
return False
def create_tensor_input(frame, region):
cropped_frame = frame[region[1]:region[3], region[0]:region[2]]
# Resize to 300x300 if needed
if cropped_frame.shape != (300, 300, 3):
cropped_frame = cv2.resize(cropped_frame, dsize=(300, 300), interpolation=cv2.INTER_LINEAR)
# Expand dimensions since the model expects images to have shape: [1, 300, 300, 3]
return np.expand_dims(cropped_frame, axis=0)
def start_or_restart_ffmpeg(ffmpeg_cmd, frame_size, ffmpeg_process=None):
if not ffmpeg_process is None:
print("Terminating the existing ffmpeg process...")
ffmpeg_process.terminate()
try:
print("Waiting for ffmpeg to exit gracefully...")
ffmpeg_process.communicate(timeout=30)
except sp.TimeoutExpired:
print("FFmpeg didnt exit. Force killing...")
ffmpeg_process.kill()
ffmpeg_process.communicate()
ffmpeg_process = None
print("Creating ffmpeg process...")
print(" ".join(ffmpeg_cmd))
process = sp.Popen(ffmpeg_cmd, stdout = sp.PIPE, stdin = sp.DEVNULL, bufsize=frame_size*10, start_new_session=True)
return process
def capture_frames(ffmpeg_process, camera_name, frame_shape, frame_manager: FrameManager,
frame_queue, take_frame: int, fps:EventsPerSecond, skipped_fps: EventsPerSecond,
stop_event: mp.Event, detection_frame: mp.Value, current_frame: mp.Value):
frame_num = 0
last_frame = 0
frame_size = frame_shape[0] * frame_shape[1] * frame_shape[2]
skipped_fps.start()
while True:
if stop_event.is_set():
print(f"{camera_name}: stop event set. exiting capture thread...")
break
frame_bytes = ffmpeg_process.stdout.read(frame_size)
current_frame.value = datetime.datetime.now().timestamp()
if len(frame_bytes) < frame_size:
print(f"{camera_name}: ffmpeg sent a broken frame. something is wrong.")
if ffmpeg_process.poll() != None:
print(f"{camera_name}: ffmpeg process is not running. exiting capture thread...")
break
else:
continue
fps.update()
frame_num += 1
if (frame_num % take_frame) != 0:
skipped_fps.update()
continue
# if the detection process is more than 1 second behind, skip this frame
if detection_frame.value > 0.0 and (last_frame - detection_frame.value) > 1:
skipped_fps.update()
continue
# put the frame in the frame manager
frame_manager.put(f"{camera_name}{current_frame.value}",
np
.frombuffer(frame_bytes, np.uint8)
.reshape(frame_shape)
)
# add to the queue
frame_queue.put(current_frame.value)
last_frame = current_frame.value
class CameraCapture(threading.Thread):
def __init__(self, name, ffmpeg_process, frame_shape, frame_queue, take_frame, fps, detection_frame, stop_event):
threading.Thread.__init__(self)
self.name = name
self.frame_shape = frame_shape
self.frame_size = frame_shape[0] * frame_shape[1] * frame_shape[2]
self.frame_queue = frame_queue
self.take_frame = take_frame
self.fps = fps
self.skipped_fps = EventsPerSecond()
self.plasma_client = PlasmaFrameManager(stop_event)
self.ffmpeg_process = ffmpeg_process
self.current_frame = mp.Value('d', 0.0)
self.last_frame = 0
self.detection_frame = detection_frame
self.stop_event = stop_event
def run(self):
self.skipped_fps.start()
capture_frames(self.ffmpeg_process, self.name, self.frame_shape, self.plasma_client, self.frame_queue, self.take_frame,
self.fps, self.skipped_fps, self.stop_event, self.detection_frame, self.current_frame)
def track_camera(name, config, frame_queue, frame_shape, detection_queue, detected_objects_queue, fps, detection_fps, read_start, detection_frame, stop_event):
print(f"Starting process for {name}: {os.getpid()}")
listen()
detection_frame.value = 0.0
# Merge the tracked object config with the global config
camera_objects_config = config.get('objects', {})
objects_to_track = camera_objects_config.get('track', [])
object_filters = camera_objects_config.get('filters', {})
# load in the mask for object detection
if 'mask' in config:
if config['mask'].startswith('base64,'):
img = base64.b64decode(config['mask'][7:])
npimg = np.fromstring(img, dtype=np.uint8)
mask = cv2.imdecode(npimg, cv2.IMREAD_GRAYSCALE)
elif config['mask'].startswith('poly,'):
points = config['mask'].split(',')[1:]
contour = np.array([[int(points[i]), int(points[i+1])] for i in range(0, len(points), 2)])
mask = np.zeros((frame_shape[0], frame_shape[1]), np.uint8)
mask[:] = 255
cv2.fillPoly(mask, pts=[contour], color=(0))
else:
mask = cv2.imread("/config/{}".format(config['mask']), cv2.IMREAD_GRAYSCALE)
else:
mask = None
if mask is None or mask.size == 0:
mask = np.zeros((frame_shape[0], frame_shape[1]), np.uint8)
mask[:] = 255
motion_detector = MotionDetector(frame_shape, mask, resize_factor=6)
object_detector = RemoteObjectDetector(name, '/labelmap.txt', detection_queue)
object_tracker = ObjectTracker(10)
plasma_client = PlasmaFrameManager()
process_frames(name, frame_queue, frame_shape, plasma_client, motion_detector, object_detector,
object_tracker, detected_objects_queue, fps, detection_fps, detection_frame, objects_to_track, object_filters, mask, stop_event)
print(f"{name}: exiting subprocess")
def reduce_boxes(boxes):
if len(boxes) == 0:
return []
reduced_boxes = cv2.groupRectangles([list(b) for b in itertools.chain(boxes, boxes)], 1, 0.2)[0]
return [tuple(b) for b in reduced_boxes]
def detect(object_detector, frame, region, objects_to_track, object_filters, mask):
tensor_input = create_tensor_input(frame, region)
detections = []
region_detections = object_detector.detect(tensor_input)
for d in region_detections:
box = d[2]
size = region[2]-region[0]
x_min = int((box[1] * size) + region[0])
y_min = int((box[0] * size) + region[1])
x_max = int((box[3] * size) + region[0])
y_max = int((box[2] * size) + region[1])
det = (d[0],
d[1],
(x_min, y_min, x_max, y_max),
(x_max-x_min)*(y_max-y_min),
region)
# apply object filters
if filtered(det, objects_to_track, object_filters, mask):
continue
detections.append(det)
return detections
def process_frames(camera_name: str, frame_queue: mp.Queue, frame_shape,
frame_manager: FrameManager, motion_detector: MotionDetector,
object_detector: RemoteObjectDetector, object_tracker: ObjectTracker,
detected_objects_queue: mp.Queue, fps: mp.Value, detection_fps: mp.Value, current_frame_time: mp.Value,
objects_to_track: List[str], object_filters: Dict, mask, stop_event: mp.Event,
exit_on_empty: bool = False):
fps_tracker = EventsPerSecond()
fps_tracker.start()
while True:
if stop_event.is_set() or (exit_on_empty and frame_queue.empty()):
print(f"Exiting track_objects...")
break
try:
frame_time = frame_queue.get(True, 10)
except queue.Empty:
continue
current_frame_time.value = frame_time
frame = frame_manager.get(f"{camera_name}{frame_time}")
if frame is None:
print(f"{camera_name}: frame {frame_time} is not in memory store.")
continue
fps_tracker.update()
fps.value = fps_tracker.eps()
# look for motion
motion_boxes = motion_detector.detect(frame)
tracked_object_boxes = [obj['box'] for obj in object_tracker.tracked_objects.values()]
# combine motion boxes with known locations of existing objects
combined_boxes = reduce_boxes(motion_boxes + tracked_object_boxes)
# compute regions
regions = [calculate_region(frame_shape, a[0], a[1], a[2], a[3], 1.2)
for a in combined_boxes]
# combine overlapping regions
combined_regions = reduce_boxes(regions)
# re-compute regions
regions = [calculate_region(frame_shape, a[0], a[1], a[2], a[3], 1.0)
for a in combined_regions]
# resize regions and detect
detections = []
for region in regions:
detections.extend(detect(object_detector, frame, region, objects_to_track, object_filters, mask))
#########
# merge objects, check for clipped objects and look again up to 4 times
#########
refining = True
refine_count = 0
while refining and refine_count < 4:
refining = False
# group by name
detected_object_groups = defaultdict(lambda: [])
for detection in detections:
detected_object_groups[detection[0]].append(detection)
selected_objects = []
for group in detected_object_groups.values():
# apply non-maxima suppression to suppress weak, overlapping bounding boxes
boxes = [(o[2][0], o[2][1], o[2][2]-o[2][0], o[2][3]-o[2][1])
for o in group]
confidences = [o[1] for o in group]
idxs = cv2.dnn.NMSBoxes(boxes, confidences, 0.5, 0.4)
for index in idxs:
obj = group[index[0]]
if clipped(obj, frame_shape):
box = obj[2]
# calculate a new region that will hopefully get the entire object
region = calculate_region(frame_shape,
box[0], box[1],
box[2], box[3])
selected_objects.extend(detect(object_detector, frame, region, objects_to_track, object_filters, mask))
refining = True
else:
selected_objects.append(obj)
# set the detections list to only include top, complete objects
# and new detections
detections = selected_objects
if refining:
refine_count += 1
# now that we have refined our detections, we need to track objects
object_tracker.match_and_update(frame_time, detections)
# add to the queue
detected_objects_queue.put((camera_name, frame_time, object_tracker.tracked_objects))
detection_fps.value = object_detector.fps.eps()
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</svg>

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<path d="M130 446.5C131.6 459.3 145 468 137 470C129 472 94 406.5 86 378.5C78 350.5 73.5 319 75.5 301C77.4999 283 181 255 181 247.5C181 240 147.5 247 146 241C144.5 235 171.3 238.6 178.5 229C189.75 214 204 216.5 213 208.5C222 200.5 233 170 235 157C237 144 215 129 209 119C203 109 222 102 268 83C314 64 460 22 462 27C464 32 414 53 379 66C344 79 287 104 287 111C287 118 290 123.5 288 139.5C286 155.5 285.76 162.971 282 173.5C279.5 180.5 277 197 282 212C286 224 299 233 305 235C310 235.333 323.8 235.8 339 235C358 234 385 236 385 241C385 246 344 243 344 250C344 257 386 249 385 256C384 263 350 260 332 260C317.6 260 296.333 259.333 287 256L285 263C281.667 263 274.7 265 267.5 265C258.5 265 258 268 241.5 268C225 268 230 267 215 266C200 265 144 308 134 322C124 336 130 370 130 385.5C130 399.428 128 430.5 130 446.5Z" fill="black"/>
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0 person
1 bicycle
2 car
3 motorcycle
4 airplane
5 bus
6 train
7 car
8 boat
9 traffic light
10 fire hydrant
12 stop sign
13 parking meter
14 bench
15 bird
16 cat
17 dog
18 horse
19 sheep
20 cow
21 elephant
22 bear
23 zebra
24 giraffe
26 backpack
27 umbrella
30 handbag
31 tie
32 suitcase
33 frisbee
34 skis
35 snowboard
36 sports ball
37 kite
38 baseball bat
39 baseball glove
40 skateboard
41 surfboard
42 tennis racket
43 bottle
45 wine glass
46 cup
47 fork
48 knife
49 spoon
50 bowl
51 banana
52 apple
53 sandwich
54 orange
55 broccoli
56 carrot
57 hot dog
58 pizza
59 donut
60 cake
61 chair
62 couch
63 potted plant
64 bed
66 dining table
69 toilet
71 tv
72 laptop
73 mouse
74 remote
75 keyboard
76 cell phone
77 microwave
78 oven
79 toaster
80 sink
81 refrigerator
83 book
84 clock
85 vase
86 scissors
87 teddy bear
88 hair drier
89 toothbrush
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/*
object-assign
(c) Sindre Sorhus
@license MIT
*/
/* NProgress, (c) 2013, 2014 Rico Sta. Cruz - http://ricostacruz.com/nprogress
* @license MIT */
/** @license React v0.19.1
* scheduler.production.min.js
*
* Copyright (c) Facebook, Inc. and its affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
/** @license React v16.13.1
* react-is.production.min.js
*
* Copyright (c) Facebook, Inc. and its affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
/** @license React v16.14.0
* react-dom.production.min.js
*
* Copyright (c) Facebook, Inc. and its affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
/** @license React v16.14.0
* react.production.min.js
*
* Copyright (c) Facebook, Inc. and its affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
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<?xml version="1.0" encoding="UTF-8"?>
<OpenSearchDescription xmlns="http://a9.com/-/spec/opensearch/1.1/"
xmlns:moz="http://www.mozilla.org/2006/browser/search/">
<ShortName>Frigate</ShortName>
<Description>Search Frigate</Description>
<InputEncoding>UTF-8</InputEncoding>
<Image width="16" height="16" type="image/x-icon">https://blakeblackshear.github.io/img/favicon.ico</Image>
<Url type="text/html" method="get" template="https://blakeblackshear.github.io/search?q={searchTerms}"/>
<Url type="application/opensearchdescription+xml" rel="self" template="https://blakeblackshear.github.io/opensearch.xml" />
<moz:SearchForm>https://blakeblackshear.github.io</moz:SearchForm>
</OpenSearchDescription>
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import sys
import click
import os
import datetime
from unittest import TestCase, main
from frigate.video import process_frames, start_or_restart_ffmpeg, capture_frames, get_frame_shape
from frigate.util import DictFrameManager, EventsPerSecond, draw_box_with_label
from frigate.motion import MotionDetector
from frigate.edgetpu import LocalObjectDetector
from frigate.objects import ObjectTracker
import multiprocessing as mp
import numpy as np
import cv2
from frigate.object_processing import COLOR_MAP, CameraState
class ProcessClip():
def __init__(self, clip_path, frame_shape, config):
self.clip_path = clip_path
self.frame_shape = frame_shape
self.camera_name = 'camera'
self.frame_manager = DictFrameManager()
self.frame_queue = mp.Queue()
self.detected_objects_queue = mp.Queue()
self.camera_state = CameraState(self.camera_name, config, self.frame_manager)
def load_frames(self):
fps = EventsPerSecond()
skipped_fps = EventsPerSecond()
stop_event = mp.Event()
detection_frame = mp.Value('d', datetime.datetime.now().timestamp()+100000)
current_frame = mp.Value('d', 0.0)
ffmpeg_cmd = f"ffmpeg -hide_banner -loglevel panic -i {self.clip_path} -f rawvideo -pix_fmt rgb24 pipe:".split(" ")
ffmpeg_process = start_or_restart_ffmpeg(ffmpeg_cmd, self.frame_shape[0]*self.frame_shape[1]*self.frame_shape[2])
capture_frames(ffmpeg_process, self.camera_name, self.frame_shape, self.frame_manager, self.frame_queue, 1, fps, skipped_fps, stop_event, detection_frame, current_frame)
ffmpeg_process.wait()
ffmpeg_process.communicate()
def process_frames(self, objects_to_track=['person'], object_filters={}):
mask = np.zeros((self.frame_shape[0], self.frame_shape[1], 1), np.uint8)
mask[:] = 255
motion_detector = MotionDetector(self.frame_shape, mask)
object_detector = LocalObjectDetector(labels='/labelmap.txt')
object_tracker = ObjectTracker(10)
process_fps = mp.Value('d', 0.0)
detection_fps = mp.Value('d', 0.0)
current_frame = mp.Value('d', 0.0)
stop_event = mp.Event()
process_frames(self.camera_name, self.frame_queue, self.frame_shape, self.frame_manager, motion_detector, object_detector, object_tracker, self.detected_objects_queue,
process_fps, detection_fps, current_frame, objects_to_track, object_filters, mask, stop_event, exit_on_empty=True)
def objects_found(self, debug_path=None):
obj_detected = False
top_computed_score = 0.0
def handle_event(name, obj):
nonlocal obj_detected
nonlocal top_computed_score
if obj['computed_score'] > top_computed_score:
top_computed_score = obj['computed_score']
if not obj['false_positive']:
obj_detected = True
self.camera_state.on('new', handle_event)
self.camera_state.on('update', handle_event)
while(not self.detected_objects_queue.empty()):
camera_name, frame_time, current_tracked_objects = self.detected_objects_queue.get()
if not debug_path is None:
self.save_debug_frame(debug_path, frame_time, current_tracked_objects.values())
self.camera_state.update(frame_time, current_tracked_objects)
for obj in self.camera_state.tracked_objects.values():
print(f"{frame_time}: {obj['id']} - {obj['computed_score']} - {obj['score_history']}")
return {
'object_detected': obj_detected,
'top_score': top_computed_score
}
def save_debug_frame(self, debug_path, frame_time, tracked_objects):
current_frame = self.frame_manager.get(f"{self.camera_name}{frame_time}")
# draw the bounding boxes on the frame
for obj in tracked_objects:
thickness = 2
color = (0,0,175)
if obj['frame_time'] != frame_time:
thickness = 1
color = (255,0,0)
else:
color = (255,255,0)
# draw the bounding boxes on the frame
box = obj['box']
draw_box_with_label(current_frame, box[0], box[1], box[2], box[3], obj['label'], f"{int(obj['score']*100)}% {int(obj['area'])}", thickness=thickness, color=color)
# draw the regions on the frame
region = obj['region']
draw_box_with_label(current_frame, region[0], region[1], region[2], region[3], 'region', "", thickness=1, color=(0,255,0))
cv2.imwrite(f"{os.path.join(debug_path, os.path.basename(self.clip_path))}.{int(frame_time*1000000)}.jpg", cv2.cvtColor(current_frame, cv2.COLOR_RGB2BGR))
@click.command()
@click.option("-p", "--path", required=True, help="Path to clip or directory to test.")
@click.option("-l", "--label", default='person', help="Label name to detect.")
@click.option("-t", "--threshold", default=0.85, help="Threshold value for objects.")
@click.option("--debug-path", default=None, help="Path to output frames for debugging.")
def process(path, label, threshold, debug_path):
clips = []
if os.path.isdir(path):
files = os.listdir(path)
files.sort()
clips = [os.path.join(path, file) for file in files]
elif os.path.isfile(path):
clips.append(path)
config = {
'snapshots': {
'show_timestamp': False,
'draw_zones': False
},
'zones': {},
'objects': {
'track': [label],
'filters': {
'person': {
'threshold': threshold
}
}
}
}
results = []
for c in clips:
frame_shape = get_frame_shape(c)
process_clip = ProcessClip(c, frame_shape, config)
process_clip.load_frames()
process_clip.process_frames(objects_to_track=config['objects']['track'])
results.append((c, process_clip.objects_found(debug_path)))
for result in results:
print(f"{result[0]}: {result[1]}")
positive_count = sum(1 for result in results if result[1]['object_detected'])
print(f"Objects were detected in {positive_count}/{len(results)}({positive_count/len(results)*100:.2f}%) clip(s).")
if __name__ == '__main__':
process()
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