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METHOD FOR USING SIGNAL DENOISING ALGORITHM BASED ON PATTERN INFORMATION
METHOD FOR USING SIGNAL DENOISING ALGORITHM BASED ON PATTERN INFORMATION
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机译：基于模式信息的信号降噪算法使用方法
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摘要
A method for filtering video noise by using pattern information is provided to filter noise acquired from a sensor in a pre-processing step of a compression CODEC to improve compression efficiency and filter noise caused by the CODEC in a post-processing step of the CODEC to obtain a high-quality image. Local variance in a predetermined pixel size is obtained for an input video signal. A mean brightness is obtained for the input video signal, and then noise variance is obtained(S31). The video signal is switched between low activity and high activity(S32). A local mean for the video signal of the low activity is obtained, and then noise is removed based on a statistical value. Pattern analysis is carried out on the video signal of the high activity, and then noise is removed based on pixel similarity.
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