Flexible prediction block decomposition with multi-channel filter banks for video coding
Flexible prediction block decomposition with multi-channel filter banks for video coding
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DOI：
10.1049/iet-ipr:20070140
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发表时间：
2008-11
影响因子：
2.3
通讯作者：
Jiazhong Chen;Yi Gao;Weiguang Sun;D. Xiang
中科院分区：
文献类型：
--
作者：
Jiazhong Chen;Yi Gao;Weiguang Sun;D. Xiang
针对最新视频编码标准H.264/AVC，提出了一种基于三种变换工具的多通道滤波器组系统的灵活预测块分解方法。H.264/AVC的4times4和8times8整数离散余弦变换被这些新工具所取代，这样的变换就能很好地适应变量预测块。因此，在不影响内容清晰度的情况下减少了块伪影，并且在较大尺寸的预测块中非常有效地利用了空间相关性。从而提高了学生的主观素质和客观素质。
A flexible prediction block decompostion method is presented with three transform tools in terms of a multi-channel filter bank system for the latest video coding standard H.264/AVC. The 4times4 and 8times8 integer discrete cosine transforms of H.264/AVC are subsituted by these new tools such that the transform is quite well adapted to variable prediction blocks. As a result, block artefacts are reduced without much effect on the sharpness of the content, and the spatial relativity is utilised quite efficiently for prediction blocks of bigger size. Consequently, the subjective quality as well as the objective quality is improved.