基于提升方案与SPIHT的无失真图像压缩  

Undistorted image compression algorithm based on lifting scheme and SPIHT

作　　者：解成俊[1] 顾海军[1] 宋建中[1] 

机构地区：[1]中国科学院长春光学精密机械与物理研究所

出　　处：《光电工程》2002年第4期61-63,67,共4页Opto-Electronic Engineering

基　　金：中国科学院知识创新工程青年基金资助项目(Q01H01)

摘　　要：基于提升方案的整数Deslauriers-Dubuc(6,2)可逆双正交小波变换,可由加法和移位完成,便于硬件实现。与SPIHT和熵编码结合可实现无失真图像压缩。与ARJ,JPEG,整数Haar变换结合DPCM以及分块DPCM中的无失真压缩方法相比,压缩比分别平均提高了50%,35%,20%,2%左右。A integer Deslauriers-Dubuc (6,2) biorthogonal invertible wavelet transform based on the lifting scheme can be finished by addition and shift. This is suitable for implementation of hardware. Undistorted image compression can be carried out by SPIHT (Set Partitioning In Hierarchical Trees) with entropy coding. Compared with the undistorted compression algorithms for ARJ, JPEG (Joint Picture Expert Group) , integer Haar transform combined with DPCM(Differential Pulse Code Modulation)and subblock DPCM, the compression ratio has been improved for 50%, 35%, 20% and 2% or so, respectively.

关 键 词：提升方案 图像压缩 小波变换 图像编码 

分 类 号：TN919.81[电子电信—通信与信息系统]