小波域中的块运动估计法  

A block motion estimation algorithm based on wavelet domain

作　　者：赵彦发[1] 赵凤群[1] 王文成[1] 

机构地区：[1]西安理工大学理学院,陕西西安710048

出　　处：《纺织高校基础科学学报》2007年第2期165-168,共4页Basic Sciences Journal of Textile Universities

摘　　要：将小波变换引入到视频图像运动估计中,运用三次B样条小波对图像进行边缘提取,同时,对图像进行了小波分解,提出了小波域中基于边缘的分块方法.该方法主要运用了帧内灰度的相关性信息,减少传输的比特率,降低了运算复杂度,同时能够保证图像的边缘部分的估计精确度.通过计算机模拟试验,得出了测试序列结果.The wavelet transform is brought into video image estimation, using cubic B-spline wavelet in edge detection, and decomposing picture with wavelet, a partitioning method based on image edge in wavelet domain is proposed, the method mainly make use of correlation information between adjacent frames, the characteristic of this method is that it can reduce transfers bit-rate, decrease complexity of operation, at the same time, it also can keep the precision of estimation in edge. According to simulation experiment on computer, motion result of testing sequence is obtained.

关 键 词：小波变换 块匹配 运动估计 

分 类 号：O241[理学—计算数学]