%0 Journal Article
%T Novel Digital Watermark Scheme Based on Wavelet Transform and Neural Network<br>一种基于小波变换和神经网络的数字水印算法
%A CHEN Jun
%A ZHANG Wei
%A YANG Hua-qiang
%A HE Chun-xiao
%A <br>陈军
%A 张伟
%A 杨华千
%A 何春筱
%J 计算机科学
%D 2011
%I 
%X A novel digital watermark algorithm based on wavelet transform and neural network was proposed. Firstly,the original image was divided into some small blocks (8 X 8 pixels). The sub-image consists of some small blocks that are selected throuth logistic map. Two sub-bands LHl and HLl were generated by acting DWT on the sub-image. Secondly,the watermark was embedded into the sub-band's wavelet coefficients. The watermarked sub-image was reconstructed using CWT. Finally, we put every small block (8 X 8 pixels) of the watermarked sub-image into the initial position of the original image. Thus,we got the watermarked image. Experiments show that the watermark embedded by this scheme has good robustness,imperceptibility and security.
%K Watermark
%K Neural network
%K Wavelet transform
%K Chaos<br>数字水印，神经网络，小波变换，混沌
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=64A12D73428C8B8DBFB978D04DFEB3C1&aid=B64E2EF1739A75D5BE822EAE732A910F&yid=9377ED8094509821&vid=16D8618C6164A3ED&iid=B31275AF3241DB2D&sid=E22B6B8FE86DD8F9&eid=3986B25773CB6C30&journal_id=1002-137X&journal_name=计算机科学&referenced_num=0&reference_num=14