%0 Journal Article
%T Improvement of SPIHT algorithm based on lifting scheme<br>基于提升小波的SPIHT改进算法
%A CHEN Hong-xin
%A LIU Zheng-guang
%A ZHANG Hong-wei
%A YANG Zheng-ling
%A <br>陈红新
%A 刘正光
%A 张宏伟
%A 杨正瓴
%J 计算机应用
%D 2006
%I 
%X Due to the computational complexity of SPIHT, the integer-to-integer lifting scheme, which could simplify the computational process, was adopted instead of the normal wavelet transform. Wavelet coefficients were divided into blocks, based on which the spatial orientation trees were re-organized. The context-based model was constructed according to the correlativity of neighboring coefficients in blocks, and the outputting signals were encoded by adaptive arithmetic code to improve coding efficiency. Experiments show that the PSNR value is more than that of the original SPIHT at the same bit rate.
%K lifting scheme
%K zero-tree
%K SPIHT
%K context
%K arithmetic algorithm<br>提升格式
%K 零树
%K 多级树集合分裂算法
%K 上下文
%K 算术编码
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=831E194C147C78FAAFCC50BC7ADD1732&aid=60188D8A6327724B&yid=37904DC365DD7266&vid=96C778EE049EE47D&iid=B31275AF3241DB2D&sid=6300C37F864D5DEA&eid=A268BE393F034483&journal_id=1001-9081&journal_name=计算机应用&referenced_num=0&reference_num=7