FIELD: image correction technologies.
SUBSTANCE: image quality correction circuit has a counter of frequency of appearance of brightness levels for counting frequency of appearance of multiple brightness levels, selection of which is performed from video signals, sent to video signal input, linear interpolator for forming correcting characteristics by means of interpolation on basis of points of calculated value, taken from output of appearance frequency counter, and image quality corrector for correction of received video signals in accordance to correcting characteristic points.
EFFECT: better image quality.
5 cl, 21 dwg
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