（2）Adjust the camera angle

1. Open the reference video view. In this view, observe the camera positions through the displayed images and adjust the three-way pan/tilt head.Adjust the position of each camera according to the actual activity range to ensure that each camera has a sufficiently large observation range in both horizontal and vertical directions.

2. The camera should be able to capture the full body of the subject, and it is recommended to place the camera within a range of 3 to 4 meters from the subject.
3. The horizontal height of the camera should preferably be level with the nasal tip of the subject to achieve optimal recognition results.
4. When using two lenses, they should be positioned at approximately 45° to the left and right of the subject's front view. In this configuration, limited movement data of the subject can be captured.

5. When using three lenses, they can be placed within the positive and negative 45° arc of the subject's front view.

6. Alternatively, two lenses can be positioned for front-view observation, with one lens for rear-view observation.

7. When using four lenses, two can be positioned for front-view observation and two for rear-view observation.

8. When the number of lenses exceeds four, they can be arranged in a circular pattern according to actual performance requirements.