The requirements for the cameras that will work with the Queue length detection module are listed in the following table.
720х576 360х288 - 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.
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Lighting | - The best working of detection is archived at medium lighting.
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Response to low - In conditions of insufficient (night) or
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over flashing- exposure) lighting, the quality of
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procedure working can - analytics can be reduced.
- Sharp changes of lighting can lead to short-time invalid analytics working.
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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.)
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Objects image | - Image quality: the image is to be clear, without visible defects from reducing procedure.
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Available - Permissible size of a person
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: rectangle the - a person) as a percentage of the
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picture is between and .
