固定压缩字典在分形图像压缩编码中的应用

The Application of Fixed Compression Dictionary to Fractal Image Compression Coding

分形图像压缩字典是实现分形图像压缩编码的关键因素 ,针对由Barnsley设计的传统的分形图像压缩编码字典随着压缩图像的变化而变化的缺点 ,笔者根据统计规律 ,提出了设计一个固定压缩字典对分形图像进行压缩编码的方法 ,彻底地改变了Barnsley实现分形图像压缩编码使用变化压缩字典的方法 .实验结果表明 ,固定压缩字典能快速地实现分形图像的编码 ,并具有部分分形图像的解码优点 .

Fractal image compression dictionary is a key factor that realizes fractal image compression coding, The main defect of traditional fractal image compression dictionary coding that was designed by Barnsley is that the compression dictionary is always changing.Baced on statistical law,this paper designs a fixed compression dictionary and makes a thorough change of variable fractal compression dictionary that was designed by Barnsley to realize fractal image compression coding.The experimental results show that the fixed compression dictionary can realize fractal image coding quickly and has some fractal image merit decoding.