The Jacquin algorithm of fractal image coding is modified according to the modern optimization theory.The aim is to reduce the coding time.

• 本文采用现代优化算法对分形图像压缩编码的简库恩算法进行改进，以期达到在不降低分形编码峰值信噪比和压缩比的前提下使编码时间减少的目的。