将多尺度分析的思想引入到值域块与定义域块匹配过程中，预先剔除掉在粗尺度下与值域块不匹配的定义域块，相对减少了在细尺度下与值域块匹配的定义域块．该方法为缩短分形编码的搜索时间提供了一条新途径．与全局搜索匹配分形块编码相比，大大地缩短了编码时间 The idea of ​​multi-scale analysis is introduced into the process of range block matching with domain block, the domain block that does not match with the range block at the coarse scale is removed in advance, and the matching with the range block is reduced relatively Domain block. This method provides a new way to shorten the search time of fractal coding. Compared with the global search for matching fractal block coding, the coding time is greatly reduced