基于分类的小波域分形图像编码方法

Fractal image coding approach based on classifications in wavelet domain

通过分析小波分解作为分形图像编码预分解的有效性和小波域内仿射变换的特性,提出一种基于分类的小波域内的分形图像编码方法。实验结果表明,该方法简化了编码参数,在保持图像质量(PSNR)的条件下提高了压缩效率,同时结合小波域图像的自动分类特征,显著地减少了编码时间。

With analyzing the availability of fractal image coding and the characters of affine transform in wavelet domain, a fractal image coding approach based on classifications is presented in this paper. Simulation results show that the proposed approach can simplify the encoding parameters, raise the compression rate while maintaining good image quality. In the meantime, it can speed up the encoding time by combining the characters of automatic classifications in wavelet domain.