Compensação de movimento utilizando módulos multi-escala e forma variável em um CODEC de vídeo híbrido




In the H.264/AVC video coding standard, motion compensation can be performed by partitioning macroblocks into square or rectangular sub-macroblocks in a quadtree decomposition. This work studies a motion compensation method using wedges, i.e. partitioning macroblocks or sub-macroblocks into two regions by an arbitrary line segment. This technique allows the shapes of the divided regions to better match the boundaries between moving objects. However, there are a large number of ways to slice a block and searching exhaustively over all of them would be an extremely computer-intensive task. Thus, a faster algorithm which detects the predominant edge orientations within a block in order to pre-select candidate wedge lines was proposed. Finally a comparison among macroblock partition methods is performed, which points to the higher performance of the wedge partition method


compensação de movimento engenharia eletrica h.264 estimação de movimento compressão de vídeo macroblocos quadtree wedgelets mpeg2

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