多尺度匹配的分形近似编码

Fractal Approximation Coding Based on Multiscale Matching

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。

In fractal coding, the matching procedure between the range block and domain block in a pool of domain blocks one by one is time consuming. To cut down the matching time, the multiscale matching idea is introduced with pre rejection of the domain blocks that are mismatched with the range block in coarse scale and with a relative decrease of the domain blocks that are matched with the range block in fine scale. A comparison with another coding method shows that the time is greatly shortened.