Fractal　Block　Coding:A　New　Method

作     者：Yi Jun Chen Shuzhen Shen Qiang Sun Xiaoan 

出 版 物：《Wuhan University Journal of Natural Sciences》 (武汉大学学报（自然科学英文版）)

年 卷 期：1997年第2卷第1期

页      面：65-69页

学科分类：11[军事学] 1105[军事学-军队指挥学] 110505[军事学-密码学] 

主　　题：image compression fractal block coding classified vector quantization adaptive block truncation coding 

摘      要：Fractal image compression is a completely new method to compress images by searching and exploiting the self similarity of the whole image . Fractal Block Coding (FBC) is a practicable fractal coding scheme with annoying slow encoding speed . In this paper, we classify the image blocks by Classified Vector Quantization (CVQ) technique and present an Adaptive Block Truncation Coding (ABTC) scheme to process the midrange blocks in the image. By this method , we reduce the encoding time to one forty fifth comparing to ordinary FBC method with little change in compression ratio and a little decreased coded image quality.