Adaptive enhancement of signal-to-noise ratio in television...

Details Adaptive enhancement of signal-to-noise ratio in television... Adaptive enhancement of signal-to-noise ratio in television...

H - Electricity

04

N

350/81

H04N 5/21 (2006.01)

Patent

CA 1166346

12985 ADAPTIVE ENHANCEMENT OF SIGNAL-TO-NOISE RATIO IN TELEVISION IMAGERY Abstract of the Invention A noise reduction filter for a television receiver in which two running averages of video signal amplitude are generated over regions of the video picture where the brightness level is substantially constant. One or the other of the averages is used to control intensity to obtain a reduction of random noise in the video signal. In areas of the picture where rapid changes in intensity occur, the averages are not used in favor of the unmodified video signal.

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