%0 Journal Article
%T SPIHT-based joint image compression and encryption<br>基于SPIHT的图像加密与压缩关联算法
%A Yang Hua-Qian
%A Liao Xiao-Feng
%A Kwok-Wo Wong
%A Zhang Wei
%A Wei Peng-Cheng
%A <br>杨华千
%A 廖晓峰
%A Kwok-Wo Wong
%A 张伟
%A 韦鹏程
%J 物理学报
%D 2012
%I 
%X A joint of image encryption and compression is investigated, and a novel joint encryption and compression scheme is proposed. In our scheme, the encryption process is performed before compression. Making use of the properties of discrete wavelet transform (DWT) and Set Partitioning in Hierarchical Trees (SPIHT) coding, confusion is restricted to the interior of single subband image itself and so image details are retained. Furthermore, diffusion preserves the two most significant bits (MSBs) and the sign bit, which contain important information about the image. The experiments show that the proposed algorithm possesses a good visual quality of the reconstructed image and a high encryption speed.
%K cryptography
%K compression
%K discrete wavelet transform (DWT)
%K set partitioning in hierarchical trees (SPIHT)<br>密码系统
%K 压缩
%K 离散小波变换(DWT)
%K 基于层次树的集合划分(SPIHT)
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=2C2DE33E892A8820FFB08D9C234FFF7D&yid=99E9153A83D4CB11&vid=1D0FA33DA02ABACD&iid=E158A972A605785F&sid=8F60D1B28D7BFE4C&eid=8F60D1B28D7BFE4C&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=21