This publication describes an entropy-adaptive filtering, which reduces compression artifacts for videos of any given complexity and at any given video-encoding bit-rate. Unlike other video filtering designs, the entropy-adaptive filtering minimizes the likelihood of compression artifacts by reducing the entropy level of the input video.
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Ehmann, Jana; Liang, Chia-Kai; Kuang, Hangyu; and Pang, Ching Yin Derek, "Entropy-Adaptive Filtering", Technical Disclosure Commons, (March 25, 2019)