一种基于分形的图像编码改进算法

本文提出了一种新的基于分形的图像编码改进算法,该算法结合小波变换多分辨率分析的特点,对分解后的高层子图像进行基本分形编码,根据不同层子图像之间的相似性,由高层分形编码构造低层子图像分形编码,同时根据不同方向子图的纹理特征不同,采用不同形状的块进行分形预测,实现图像压缩。实验证明,这种改进算法能够大大缩短分形编码的时间,并取得较高的压缩比。

An Image Coding Improved Algorithm Based On Fractal

A new image coding improved algorithm based on fractal is proposed in this paper. The algorithm combined the feature of multi-resolution analysis of wavelet transformation .And it processes basic fractal coding to the high-level subimages. Then according to the likeness of structure between different level subband images, we construct the low-level fractal codes with the high ones. Dur- ing the fractal coding, we apply the fractal predicting by the different block size according to the different texture fea...