一种基于MPEG4的运动估计改进算法研究

Research on an Improved Motion Estimation Algorithm based on MPEG4

运动估计是视频压缩中帧间预测编码的关键技术之一,由于运动估计通常具有较大的运算量,因此对压缩性能具有重要的影响。在分析了现有的六边形搜索算法(HEXBS),提出了一种改进的快速运动估计搜索算法,通过实验表明与HEXBS算法具有相似的计算复杂度,但是视频编码质量优于HEXBS算法。

Motion estimation is one of the key technologies in inner-frame estimation encoding of video compression. Motion estimation often takes long time, so it influences compression performance higly. The existing Hexagon-Based search algorithms are analyzed, and then an improved fast search algorithm is brought forward. Experimental results show that this algorithm manages to have similar complexity with the HEXBS algorithm, while having superior video coding quality.