| 快速形状自适应区域分割方法 |
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| 引用本文： | 洪波,肖高逾,余松煜. 快速形状自适应区域分割方法[J]. 计算机工程, 2000, 26(5): 60-61 |
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| 作者姓名： | 洪波 肖高逾 余松煜 |
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| 作者单位： | 上海交通大学图象通信与信息处理研究所,上海200030 |
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| 摘 要： | 为了实现基于内容的编码，在ＭＰＥＧ－４中引入了视频对象层的概念。ＳＡ－ＤＣＴ技术可以用于对ＶＯＰ中边缘块的编码，形状自适应区域分割方法可以提高ＳＡ－ＤＣＴ的编码效率，减少需要编码的块数，但相对较复杂。
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| 关 键 词： | MPEG－4 区域分割 SA－DCT 视频编码 |
| 修稿时间： | 1999-09-16 |
Fast Shape-adaptive Region Partitioning Method |
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| Hong Bo,Xiao Gaoyu,Yu Songyu. Fast Shape-adaptive Region Partitioning Method[J]. Computer Engineering, 2000, 26(5): 60-61 |
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| Authors: | Hong Bo Xiao Gaoyu Yu Songyu |
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| Abstract: | VOP concept is introduced in MPEG-4 for the content-based coding. The SA-DCT algorithm can be applied to the blocks which straddle the boundedes of VOP. The shape-adaptive region partitioning method can improve the coding efficiency of SA-DCT and reduce the number of coding blocks, but it has high compuboonal complexity. A fast region partitioning method is introduced, it partitions blocks directly and has low complexity. Computel simulations ho comparisons with results of other methods reveal that this technique is quite promising and competitive, it decreases the complexity greatly with high coding efficiency. |
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| Keywords: | MPEG-4 Shape-adaptive Region partitioning SA-DCT |
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