Requirements for the operation of the Abandoned object detector VI (Street)are given in the table:
| Camera | - Pitch angle of the camera optical axis relative to the horizontal plane:
- at least 15 degrees (for the inclined method of placement);
- from 80 to 100 degrees (for placement on ceiling).
- Resolution is from 640x360 to 1920×1080 pixels. Resolution can be:
- lower for close-up scenes (2–7 meters for cameras with standard focal length) without loss of recognition quality;
- higher for scenes far from camera (from 10 meters).
- FPS is at least 25
- Color image only
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| Lighting | - Lighting in the scene is from 100 to 1000 lux
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| Scene and camera angle | - Shooting distance is from 5 to 30 meters
- Density of people flow is no more than one person per square meter
- Volume of the abandoned object is from 3 cubic decimeters
- Background texture: moving, random and inhomogeneous background with contrast variations from 0.2 to 0.8
| Object images | - For abandoned objects, the optimum density is 100 pixels per meter
- Maximum signal-to-noise ratio (without the function of automatic signal amplification) is at least 42 dB
- Image isn't noisy and isn't distorted by artifacts of the compression algorithm
- Distortion is no more than 10% (at the edges of the frame—at a distance of one third from its center in width, height and diagonal)
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