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move false positive guide to config folder

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Blake Blackshear 2024-01-28 20:09:08 -06:00
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10
docs/docs/guides/false_positives.md → docs/docs/configuration/object_filters.md
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@ -1,8 +1,10 @@
---
id: false_positives
title: Reducing false positives
id: object_filters
title: Filters
---
There are several types of object filters that can be used to reduce false positive rates.
## Object Scores
For object filters in your configuration, any single detection below `min_score` will be ignored as a false positive. `threshold` is based on the median of the history of scores (padded to 3 values) for a tracked object. Consider the following frames when `min_score` is set to 0.6 and threshold is set to 0.85:
@ -18,6 +20,8 @@ For object filters in your configuration, any single detection below `min_score`
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.
show image of snapshot vs event with differing scores
### Minimum Score
Any detection below `min_score` will be immediately thrown out and never tracked because it is considered a false positive. If `min_score` is too low then false positives may be detected and tracked which can confuse the object tracker and may lead to wasted resources. If `min_score` is too high then lower scoring true positives like objects that are further away or partially occluded may be thrown out which can also confuse the tracker and cause valid events to be lost or disjointed.
@ -36,7 +40,7 @@ False positives can also be reduced by filtering a detection based on its shape.
### Object Proportions
`min_ratio` and `max_ratio` values are compared against a given detected object's width/height ratio (in pixels). If the ratio is outside this range, the object will be ignored as a false positive. This allows objects that are proportionally too short-and-wide (higher ratio) or too tall-and-narrow (smaller ratio) to be ignored.
`min_ratio` and `max_ratio` values are compared against a given detected object's width/height ratio (in pixels). If the ratio is outside this range, the object will be ignored as a false positive. This allows objects that are proportionally too short-and-wide (higher ratio) or too tall-and-narrow (smaller ratio) to be ignored.
:::info

2
docs/sidebars.js
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@ -11,7 +11,6 @@ module.exports = {
Guides: [
"guides/getting_started",
"guides/configuring_go2rtc",
"guides/false_positives",
"guides/ha_notifications",
"guides/ha_network_storage",
"guides/stationary_objects",
@ -43,6 +42,7 @@ module.exports = {
"configuration/camera_specific",
],
Objects: [
"configuration/object_filters",
"configuration/masks",
"configuration/zones",
"configuration/objects",