【摘要】 有ＤＣＴ补偿的分形编码可以克服纯分形图像压缩的弱点，但难以实现对输出码流的控制．提出自相似特征矢量（ＦＶＳ， Ｆｅａｔｕｒｅ Ｖｅｃｔｏｒ ｏｆ Ｓｅｌｆ－ｒｅｓｅｍｂｌａｎｃｅ）的概念，并用与基准图像相比较的方法以完成压缩参数的最佳选取．实验结果证明，这种方法在给定压缩比时能得到该压缩比下最佳的恢复图像质量，实现对压缩比的控制．更多还原

【Abstract】 The fractal image encoding method using DCT as a complement cannot control the bit-stream efficiently. A concept of the self-resemblance for different images is proposed. With this new reference vector of images, the compression ratio can be controlled by selecting the parameters properly. In this way, the expected compression ratio and the corresponding highest PSNR can be obtained.更多还原