%0 Journal Article
%T A New Image Coding Algorithm Based on DWT and Contourlet<br>低比特率混合域图像压缩编码算法研究
%A WANG Xiang-yang
%A ZUO Ke-ke
%A <br>王向阳
%A 左珂可
%J 中国图象图形学报
%D 2007
%I 
%X In this paper,a new image coding algorithm based on DWT and Coutourlet is proposed.Firstly,the wavelet transform is applied to the original image,and the directional filter banks(DFB) are employed to middle and high frequency subbands;Then,the lowest frequency coefficients are optimized according to the wavelet coefficients statistical properties;Thirdly,the new extended spatial orientation tree are constructed;Finally,the encoding scheme is realized by the idea of SPIHT.The experimental results show that the presented image compression scheme performs better than that of the state-of-art image coders(SPIHT,WBCT),especially for low bit-rate and texture image.
%K Contourlet<br>图像编码
%K 优化最低频子带
%K 扩展空间方向树
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=D06194629680C940ACE75262F54B9D85&aid=DDEBDCBBD7663DA9DB3AC4BB089F2002&yid=A732AF04DDA03BB3&vid=59906B3B2830C2C5&iid=708DD6B15D2464E8&sid=9806D0D4EAA9BED3&eid=2DD7160C83D0ACED&journal_id=1006-8961&journal_name=中国图象图形学报&referenced_num=0&reference_num=10