The requirements for the cameras that will when you work with the the Heat map detection module module are listed given in the following table.
Camera | - Resolution: 720x576 pixels (CIF4), using ; the use of 360x288 pixels (CIF1) is acceptable; oversize images are reduces until reduced to CIF4.
- Fps: not less than 6at least six.
- Color: analytics works with both grey and color images.
- Camera must be rigidly fixed.shaking is absent
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Lighting | - The best working of detection is archived detector operation is achieved at medium lighting. In conditions of insufficient (night) or excessive (exposurelight-striking) lighting, the quality of analytics can algorithm operation can be reduced.
- Sharp lighting changes of lighting can lead to the short-time invalid improper analytics working.operation
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Scene and camera angle | - The best position – position—a camera "looks" to at the scene vertically down. The better you perform this requirement, the carefully more accurate the received estimation.
- Sizes of the camera field of view: 3x3m 3x3 m is minimal (6x6 people), 4x4m 4x4 m is optimal (8x8 people), 8x8m and 8x8 m is maximal (16x16 people).
- Background is static and is not isn't changed sharply.
- Analytics can work inappropriately improperly on specular reflecting surfaces and in the case of sharp shadows from moved moving objects.
- Analytics can work inappropriately in case of in the camera field of view improperly if there are periodic movements of background objects (trees, working TV, etc.)and so on) in the camera field of view
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Object's Objects image | - Image quality: the image is to must be clear, without visible defects from reducing procedurethe compression algorithm.
- Permissible person 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%
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