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Guijie Pang

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Proceedings Article | 20 October 2022 Paper

Low-complexity VVC fast intra coding algorithm

Guijie Pang, Yuan Ling

Proceedings Volume 12451, 124514J (2022) https://doi.org/10.1117/12.2656740

KEYWORDS: Video, Video coding, Computer programming, Optimization (mathematics), Image segmentation, Performance modeling, Image classification

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Currently Versatile Video Coding (VVC) is the most advanced video compression coding standard. The new standard introduces a quadtree plus multi-type tree (QTMT) encoding technique. This coding technique improves coding efficiency, but also brings extremely high computational complexity. For reduce the complexity of intra-frame coding of VVC, an intra-frame fast coding unit (CU) partitioning technique based on Sobel operator is proposed. The Sobel operator is used to skip several split methods, which greatly reduces the complexity of intra-frame split. At the same time, we use the texture standard deviation (std) to determine whether the CU texture is smooth or not, which can end the split of some CUs early. In All Intra (AI) mode, the simulation results show that the encoding time is reduced by an average of 39.05%, while the Bjøntegaard Delta Bitrate (BDBR) is only increased by 0.91%.

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