The nowadays fractal image compression schemes suffers from long encoding time, because of considerable comparisons with domain blocks for each range block to find its best-match domain blocks.
目前分形图像压缩的最主要问题是其编码时间太长，这主要是因为在分形编码时，对每一个待编码值域块都需要比较数量巨大的定义域块才能找到它的最优匹配块。
Fractal image coding is a very promising compression technique, but it suffers from long encoding time.
分形图像编码是一种很有前途的压缩技术，但编码时间长阻碍了它的广泛应用。
Fractal image compression is of outstanding advantages of high compression ratio and high image qualities, but its encoding process is time-consuming.
分形图象编码法具有高压缩比、高图象品质等显著优点，但其编码时间太长。
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