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针对分形图像编码速度慢的缺点，提出若干加快编码速度的措施按照图像局部的统计特性和人眼的视觉特性，限定定义域块的搜索范围，优化定义域块及其几何变换的搜索顺序，并结合去除搜索匹配过程中的重复运算等措施，在保证恢复图像的主客观质量变化不大的前提下，使编码速度得到明显提高，对于若干标准图像的实际编码实验结果证明了算法的正确性
Aiming at the shortcomings of the fractal image coding speed, a number of measures to speed up the coding speed are put forward. According to the statistical characteristics of the image and the visual characteristics of the human eye, the search range of the domain block is limited, the search order of the domain block and its geometric transformation is optimized, And combined with measures such as repeated operation in the process of removing search matching, the encoding speed is obviously improved under the premise of ensuring that the subjective and objective quality of the restored image is not changed much. The experimental results of some standard images prove the correctness of the algorithm