基于JPEG-LS标准的真彩色图像改进无损压缩方法  

A JPEG-LS-BASED LOSSLESS COMPRESSION METHOD FOR TRUE-COLOR IMAGES

作　　者：李刚[1] 邵蔚[1] 叶文宇[1] 

机构地区：[1]天津大学精密仪器及光电子工程学院,天津300072

出　　处：《中国生物医学工程学报》2002年第5期426-429,共4页Chinese Journal of Biomedical Engineering

摘　　要：无损压缩由于其保持信息完整性的特点 ,一直是医学图像和其它某些特殊领域图像的首选压缩方案。目前有相当多的无损压缩方法都集中针对于灰度图像 ,而忽略了彩色图像。并且很多算法都偏复杂 ,不利于真正地实时压缩应用。在此 ,我们以真彩色图对压缩对象 ,在JPEG SL标准的基础上对其无损压缩算法进行改进 ,以线性变换和多通道压缩编码的方式进一步消除了图像内部的信息冗余 。It′s known that lossless compression is the premier selection of compression for medical or other images, for it can reserve the intact information. But many of the advances are concentrated on the gray images, not the color ones; And quite a few are of complicated algorithms, unsuitable for application. In this paper, we present a modified lossless compression method based on JPEG LS and JBIG compression standard, which employs linear transform and multichannel encoding schemes to reduce the redundancy of the images. Remaining the algorithmic simplicity, the method gives a better compression performance than some other methods.

关 键 词：无损压缩 真彩色图像 JPEG-LS JBIG 

分 类 号：TN919.81[电子电信—通信与信息系统]