静态图像自适应编码的一种实现方法  

A realization of adaptive static image coding

作　　者：邵菲[1] 周辉[1] 朱仁峰[1] 

机构地区：[1]装备指挥技术学院电子工程系,北京101416

出　　处：《信息技术》2004年第2期56-58,共3页Information Technology

摘　　要：在静态图像的方块截断编码中由于受到每个子块中电平级数的限制,编码过程无法正确识别图像边缘的变化,在一些灰度变化比较剧烈的子块中很容易造成有用信息的丢失。为了解决以上问题,本文提出了一种自适应方块截断编码算法,仿真结果表明:本文的自适应算法对图像边缘的恢复有较大的改进,视觉质量有很大的提高。Because of the constraint of quantized level in every sub-block in Block Truncating Coding(BTC), the coder cannot detect the variation of the image edges correctly, thus some useful information is lost in the sub-block in which the brightness changes steeply. In order to solve this problem, the paper brings forward an adaptive method—AMBTC(Adaptive Module Block Truncating Coding), the simulations prove that: The proposed algorithm has great improvement in terms of the construction of the image edges, this scheme can also achieve better vision performance.

关 键 词：自适应方块截断编码 量化级电平 压缩比 

分 类 号：TP317.4[自动化与计算机技术—计算机软件与理论]