摘要
针对分形压缩编码存在耗时过长的问题 ,提出一种快速分形编码算法 :即利用快速卷积来计算图像块之间的互相关 ,从而对编码过程进行无损加速。经仿真实验表明 :与经典的分割迭代函数系统 (PIFS)方法相比 ,在信噪比可接受的前题下 ,该算法的压缩比和编码速度均有显著提高。
To solve the problem for fractal compression coding in accordance with its long time costing,a fast fractal coding method is indroduced:ie using fast convolution to calculate the mutuality of image blocks,the procedure of coding is accelerated loss lessly The simulation experiment shows that compared with the conventional partitioned iterated function system (PIFS) method, the compression ratio and coding speed of the method is increased significantly and the signal to noise ratio of it is accessible
出处
《光学技术》
CAS
CSCD
2001年第1期10-12,共3页
Optical Technique
基金
国家自然科学基金资助项目(59778050)
吉林省科委基础研究项目(19980557-01)
关键词
分形
图像
压缩编码
快速卷积
fractal
image
compression coding
fast convolution
