摘要
在新一代视频压缩编码标准H.264中,块匹配运动估计有着举足轻重的地位,它的性能影响着输出码流的质量。在块匹配中运动估计耗时最多,为了减少运动估计的时间和搜索的次数,常采用快速搜索算法。介绍块匹配运动表示法,详细研究块匹配中的3种快速搜索算法的搜索过程,并对3种算法的性能作比较分析。
In the new video compression code standard H. 264, the block matching motion estimation plays a very important role. Its performance affects the quality of the encoded bit stream. In the block matching, the most time-consuming part is motion estimation. In order to reduce the time and search frequency, fast search algorithm is often adopted. The paper introduces the methods of block matching, especially 3 kinds of fast search algorithm in the search process of block matching, and make comparative analysis of the performance of the three algorithms.
出处
《中国有线电视》
2007年第24期2290-2292,共3页
China Digital Cable TV