多阶自适应算术编码研究  

Research on multi-order adaptive arithmetic coding

作　　者：李彬[1] 倪桂强[1] 罗健欣[1] 

机构地区：[1]解放军理工大学指挥自动化学院,江苏南京210007

出　　处：《微型机与应用》2010年第12期71-74,共4页Microcomputer & Its Applications

摘　　要：符号在某符号序列后出现的概率往往高于其在整个信息中的概率,由此可以降低冗余度,获得高效的压缩率。对不同类型文件的试验结果表明,多阶自适应算术编码能显著提高压缩效果,特别是对于上下文相关性强的文件,其压缩效果要好于LZW和WinRAR。The context dependence was considered as an emphasis because the probability of a symbol behind a sequence always higher than in the whole-length, thus the total entropy can be cut down and the compression ratio will up-grading. Experimental results on different types of files demonstrate that the multi-order adaptive arithmetic coding enhanced the compression cffect significantly, especially for high correlation files, the compression effect even better than LZW and WinRAR.

关 键 词：算术编码 自适应 阶 压缩率 

分 类 号：TN911[电子电信—通信与信息系统]