Camera

• Resolution: 720х576 (CIF4), 360х288 (CIF1) is also allowed. Increasing the resolution above CIF4 doesn't improve the performance of the recognition algorithm
• FPS is at least 6
• Color: analytics works with both gray and color images
• No camera shake

Lighting

• The best performance of the detection tool is achieved under moderate lighting. In conditions of insufficient (night) or excessive (light-striking) lighting, the algorithm performance can decrease
• Abrupt changes in lighting can lead to short-term incorrect operation of analytics

Scene and camera angle

• The best position is the camera looking down at the scene. The better this requirement is met, the more accurate the estimate is
• Dimensions of the camera FOV: minimum 3x3 m (6x6 people), optimal 4x4 m (8x8 people), maximum 8x8 m (16x16 people)
• The background is mostly static and doesn’t change abruptly
• Analytics can work incorrectly on reflective surfaces, and if there are sharp shadows from moving objects
• Analytics can work incorrectly if there are periodic movements of background objects in the camera FOV (trees, TV is on, and so on)