灰度医学图像的EBCOT位平面快速扫描法  

Fast Algorithm of EBCOT Bit-Plane Scanning for Gray Medical Images

作　　者：徐向民[1] 舒琳[1] 刘伟[2] 邢晓芬[1] 

机构地区：[1]华南理工大学电子与信息学院,广东广州510640 [2]中国科学技术大学电子科学技术系,安徽合肥230001

出　　处：《华南理工大学学报（自然科学版）》2006年第1期14-17,共4页Journal of South China University of Technology(Natural Science Edition)

基　　金：广东省自然科学基金资助项目(31449)

摘　　要：针对JPEG2000中EBCOT编码器位平面扫描耗时多的问题,在分析三通道扫描特性的基础上,提出了一种适宜灰度医学图像渐进传输的三通道快速扫描方法.通过在第一通道生成列省略标志的游程表,克服以固定列群构造的GOCS的缺陷,可实现任意列群组合的跳跃.实验结果表明,所提出的位平面扫描方法的效率较列群省略法更高,时耗减少到列群省略法的94%左右.Considering the disadvantages of consuming too much time by the bit-plane scanning by EBCOT （ Embedded Block Coding With Optimized Truncation） encoder of JPEG2000, a fast algorithm of bit-plane scanning is proposed for the progressive transmission of gray medical images based on the characteristics of the three-pass scanning. The algorithm generates the run length query table of column skipping sign in the first pass, thus overcoming the shortcoming of the Group-of-Column Skipping method and realizing the jumping of any length column group. Experimental results show that, compared with the Group-of-Column Skipping method, the proposed method is of higher scanning efficiency, and the time consumption reduces to 94% of that of the Group-of-Column Skipping method.

关 键 词：位平面 快速扫描 灰度医学图像 三通道扫描 列群省略法 游程表 

分 类 号：TN919.8[电子电信—通信与信息系统]