In-loop selective processing for contour artefact reduction in video coding |
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Authors: | Yoo K Song H Sohn K |
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Affiliation: | Samsung Electron., Digital Media Commun. R&D Center, Suwon, South Korea; |
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Abstract: | Proposed is an in-loop decontouring algorithm that utilises block-based processing for video coding. In order to avoid uniform filtering that brings about unnecessary processing, candidate blocks that may contain noticeable false contours using different kinds of features in a block are sequentially refined. Then, pseudorandom noise masking is applied to them to reduce contour artefacts. It is demonstrated that visual quality could be efficiently improved with a negligible rate-distortion (RD) loss. |
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