Camera

• Resolution: 720x576 (CIF4), using of 360x288 (CIF1) is acceptable; oversize images are reduces until CIF4.
• Fps: not less than 6
• Color: analytics works with grey and color images.
• Camera must be rigidly fixed.

Lighting

• The best working of detection is archived at medium lighting. In conditions of insufficient (night) or excessive (exposure) lighting, the quality of analytics can be reduced.
• Sharp changes of lighting can lead to short-time invalid analytics working.

Scene and camera angle

• The best position – camera "looks" to the scene vertically down. The better this requirement, the carefully the received estimation.
• Sizes of camera field of view: 3x3m is minimal (6x6 people), 4x4m is optimal (8x8 people), 8x8m is maximal (16x16 people).
• Background is static and is not changed sharply.
• Analytics can work inappropriately on specular surfaces and in case of sharp shadows from moved objects.
• Analytics can work inappropriately in case of in the camera field of view there are periodic movements of background objects (trees, working TV, etc.)

Objects image

• Image quality: the image is to be clear, without visible defects from reducing procedure.
• Permissible size of a person (the area of a rectangular track around a person) as a percentage of the frame area: from 0.25% to 10%