%0 Journal Article
%T A New Technique for Digital Image Watermarking
%A Xiang-Sheng Wu
%A <br>Xiang-Sheng
%A Wu
%J 计算机科学技术学报
%D 2005
%I 
%X In this paper, a new technique is proposed for rotation, scaling and translation (RST) invariant image watermarking based on log-polar mappings (LPM) and phase-only filtering (POF). The watermark is embedded in the LPM of Fourier magnitude spectrum of the original image, and a small portion of resulting LPM spectrum is used to calculate the watermark positions. This technique avoids computing inverse log-polar mapping (ILPM) to preserve the quality of the watermarked image, and avoids exhaustive search to save computation time and reduce false detection. Experimental results demonstrate that the digital watermarking technique is invariant and robust to rotation, scaling, and translation transformation.
%K digital image watermarking
%K log-polar mapping<br>数字水印
%K 图象处理
%K 图象过滤
%K LPM光谱
%K 傅立叶变换
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=F57FEF5FAEE544283F43708D560ABF1B&aid=1E58C5BC04640494EA3F09604B2A3761&yid=2DD7160C83D0ACED&vid=A04140E723CB732E&iid=B31275AF3241DB2D&sid=85C7135C065B9251&eid=51E4ADE955550A0C&journal_id=1000-9000&journal_name=计算机科学技术学报&referenced_num=0&reference_num=15