高压缩低损耗图像编码算法研究  

Study of algorithm for high compression ratio and low loss image coding

作　　者：冷星星[1] 何小海[1] 刘凤民[2] 罗代升[1] 

机构地区：[1]四川大学电子信息学院图像信息研究所,四川成都610064 [2]国土资源部实物地质资料中心,河北燕郊065201

出　　处：《成都信息工程学院学报》2008年第2期182-186,共5页Journal of Chengdu University of Information Technology

基　　金：四川省科技攻关资助项目(05GG021-026-03)

摘　　要：根据现有的图像压缩方法,提出一种二次压缩的具体算法。这种算法是先采用离散余弦变换、线性量化、哈夫曼编码进行有损压缩,再采用行程编码进行无损压缩。通过程序对岩心图像进行研究,测试结果证明了算法对岩心图像处理可以取得高压缩低损耗的目的。Referring to some existing image compression methods a concrete method of twice compression is presented. First, the discrete cosine transformation, linear transformation, linear quantization and Huffman encoding are used to implement the loss compression. Then the run-length encoding is used to implement the lossless compression. The algorithm principle is introduced and the processes of the rock images through the programming are studied. The experiment results show that this algorithm attains the aim.

关 键 词：图像压缩 离散余弦变换 线性量化 哈夫曼编码 行程编码 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]