Face Recognition
5
5.3 Ideal Camera Position
Face recognition works best when the camera is properly aligned with the face of the
recognition target. When installing the camera, make sure to take the relevant environmental
factors into account, such as height, distance, focus and range, to achieve optimal recognition
results. A well-lit hallway is an example of an ideal location, where the direction of movements
of the recognition targets can be easily predicted. Make sure you meet the criteria below when
installing the camera:
Less Ideal Installation Scenario
Recommended Installation Scenario
A height of > 2 m or < 2 m
An approximate height of 2 m
A distance of > 4 m or < 4 m
An approximate distance of 4 m
Wide angle end
Telephoto end
> 15° of lateral deviation
< 15° of lateral deviation
Results
Less Accuracy
Better Accuracy
Height & Distance:
The more aligned the camera is to the front view of the face, the
better the recognition results. Mount the camera at a 15-degree angle to the face of the
recognition targets, or at a height of approximately 2 m (6.56 ft). The recognition result is
at its best at a distance of approximately 4 m (13.12 ft).
4M
<15°
<15°
2M
Figure 5-3
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