%0 Journal Article
%T A Blind Grayscale Watermarking Algorithm Based on Block DCT<br>一种基于分块DCT的盲灰度水印算法*
%A YANG Rui
%A PU Jie-xin
%A <br>杨蕊
%A 普杰信
%J 计算机应用研究
%D 2005
%I 
%X This paper proposes a meaningful 8-bit grayscale watermarking image embedding algorithm through using even-uneven identity and JPEG quantifying coefficients based on block Discrete Cosine Transform(DCT) hypo-low frequency AC coefficient. The cover image is not needed when extracting the watermarking data. And PN series is used to ensure watermarking security. The experiment results show that the algorithm has better robustness on JPEG and image cut.
%K Digital Watermarking
%K Block DCT
%K JPEG Compression
%K Blind Testing<br>数字水印
%K 分块离散余弦变换
%K JPEG压缩
%K 盲提取
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=A9D9BE08CDC44144BE8B5685705D3AED&aid=FC600AAC5F170BA0&yid=2DD7160C83D0ACED&vid=BC12EA701C895178&iid=DF92D298D3FF1E6E&sid=31611641D4BB139F&eid=43608FD2E15CD61B&journal_id=1001-3695&journal_name=计算机应用研究&referenced_num=1&reference_num=8