Face Recognition Quality
Each identity and face is given a 1-3 star ranking.
The accuracy of face detection and face similarity search is highly dependent on scene characteristics and video quality.
Each image is assigned one, two or three stars.
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The star rating is assigned by BriefCam and is a combination of:
Face detection
Face resolution
Face image quality
Face landmarks
Face pose
In general, 1 star is for faces that are not possible for AI to recognize as a person, 2 stars is for faces that AI can recognize with medium confidence and 3 stars is for faces that AI can recognize with high confidence.
In the REVIEW solution, 2-star and 3-star images can be added to the filter. 1-star images cannot be added.
In the RESPOND solution, 3-star images can trigger alerts and 2-star and 1-star images cannot trigger alerts. By default, 2-star images cannot trigger alerts; however, for high-sensitivity configurations, 2-star images can trigger alerts.
Note
Faces rated with one star will not be added to an identity.
When you select the Show objects with Faces option and the Sort by is set to Most Relevant, the thumbnails will appear with the highest number of stars first (high to low).
You can also click on one of the stars to only show faces starting with a certain score (one, two, or three stars).
When you export the face thumbnails, only the faces with the minimum score or higher will be exported.
The table below summarizes this:
REVIEW | RESPOND | |
1 star | X | X |
2 stars | √ | X - default √ - high-sensitvity |
3 stars | √ | √ |