摘要
通过分析影响分形图像编码速度的相关因素,提出了使用图像块的统计特性来改进分形压缩性能的思想,在证明迭代函数系统不会改变图像块的统计特性的结论基础上,给出了基于统计特性的分形图像压缩方法。实验结果说明该方法在压缩比、压缩时间和重建图像质量等方面都较传统方法有明显改善。
The paper analyses the factors that affect the speed of fractal image coding,and proposes a novel idea by using statistical property to improve image fractal compress performance.A theorem is proved that the IFS cannot change the image blocks＇ statistic.Moreover,it gives a novel fractal image compression method based on the statistic property. The simulation results illuminate that the new method can improve the PSNR,compress ratio and compress time cost.
出处
《计算机工程与应用》
CSCD
北大核心
2005年第26期75-77,80,共4页
Computer Engineering and Applications
关键词
分形压缩
迭代函数系统
统计特性
fractal compression ,iterated function system ,statistical property
