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.
出处
《光电工程》
EI
CAS
CSCD
北大核心
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)
