Add object ratio config parameters

Issue: #2948
This commit is contained in:
Nick
2022-03-11 23:47:40 -05:00
committed by mathmaniac43
parent 0abd0627df
commit 1aa95d1e93
9 changed files with 58 additions and 10 deletions
+4
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@@ -194,6 +194,10 @@ objects:
min_area: 5000
# Optional: maximum width*height of the bounding box for the detected object (default: 24000000)
max_area: 100000
# Optional: minimum width/height of the bounding box for the detected object (default: 0)
min_ratio: 0.5
# Optional: maximum width/height of the bounding box for the detected object (default: 24000000)
max_ratio: 2.0
# Optional: minimum score for the object to initiate tracking (default: shown below)
min_score: 0.5
# Optional: minimum decimal percentage for tracked object's computed score to be considered a true positive (default: shown below)
+5 -1
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@@ -3,7 +3,11 @@ id: false_positives
title: Reducing false positives
---
Tune your object filters to adjust false positives: `min_area`, `max_area`, `min_score`, `threshold`.
Tune your object filters to adjust false positives: `min_area`, `max_area`, `min_ratio`, `max_ratio`, `min_score`, `threshold`.
The `min_area` and `max_area` values are compared against the area (number of pixels) from a given detected object. If the area is outside this range, the object will be ignored as a false positive. This allows objects that must be too small or too large to be ignored.
Similarly, the `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.
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:
+2
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@@ -52,6 +52,7 @@ Message published for each changed event. The first message is published when th
"score": 0.7890625,
"box": [424, 500, 536, 712],
"area": 23744,
"ratio": 2.113207,
"region": [264, 450, 667, 853],
"current_zones": ["driveway"],
"entered_zones": ["yard", "driveway"],
@@ -75,6 +76,7 @@ Message published for each changed event. The first message is published when th
"score": 0.87890625,
"box": [432, 496, 544, 854],
"area": 40096,
"ratio": 1.251397,
"region": [218, 440, 693, 915],
"current_zones": ["yard", "driveway"],
"entered_zones": ["yard", "driveway"],