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Requirements for the operation of the Abandoned object detector VI (Street) are given in the table:

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)