Algorithm Management; Face Picture Comparison; Face Grading Configuration - HIKVISION iDS-9664NXI-M8/X User Manual

7.3.2 Algorithm Management

If the video scene is changed, or the alarm accuracy is not as good as it used to be, you can restore
it to previous version or the original version.
Go to Smart Analysis → Self-Learning → Algorithm Management to manage algorithm.

7.4 Face Picture Comparison

The device supports the face picture comparison alarm and face capture for the connected camera
based on face recognition feature.
Go to Smart Analysis → Engine Settings → Engine Configuration . Configure at least one engine
usage as Facial Recognition. Refer to Engine Configuration for details.
Note
The chapter is only available for certain models.

7.4.1 Face Grading Configuration

Face grading is used for face picture selection. According to pupil distance, tilt angle and pan angle,
it only uses face pictures which satisfy grading requirement for analysis. Larger pupil distance,
smaller tilt and pan angle, better it would be for analysis.
Steps
1. Go to Smart Analysis → Engine Settings → Face Grading .
2. Check Enable Face Grading.
3. Set Pupil Distance, Tilt Angle, and Pan Angle.
Pupil Distance
Pupil distance is the distance between two pupils. In order to get better detection result, the
pupil distance shall not be less than 40, and the recommended value is 60.
Network Video Recorder User Manual
Figure 7-4 Face Grading
83