教師資料查詢 | 類別: 期刊論文 | 教師: 謝景棠 Hsieh Ching-tang (瀏覽個人網頁)

標題:Geometric Invariant Semi-fragile Image Watermarking Using Real Symmetric Matrix
學年96
學期1
出版(發表)日期2007/09/01
作品名稱Geometric Invariant Semi-fragile Image Watermarking Using Real Symmetric Matrix
作品名稱(其他語言)
著者謝景棠; Hsieh, Ching-tang; 吳業寬; Wu, Yeh-kuang; 洪國銘; Hung, Kuo-ming
單位淡江大學電機工程學系
出版者臺北縣淡江大學
著錄名稱、卷期、頁數淡江理工學刊=Tamkang journal of science and engineering 10(3)頁211-220
摘要In order to improve the detection of malicious tampering of images, it is necessary to decrease the fragility of hidden watermarks, even for digital images which have been distorted incidentally. However, watermarks are sensitive to geometric distortions. In this paper, we propose a new invariant semi-fragile digital watermarking technique based on eigenvalues and eigenvectors of a real symmetric matrix generated by the four pixel-pair. And the multi-rings Zernike transform (MRZT) is proposed to achieve geometric invariance. A signature bit for detecting malicious tampering of an image is generated using the dominant eigenvector. The MRZT method is against the geometric distortions even when the image is under malicious attacks. The experimental results show that this algorithm can resist high quality JPEG compression, and improve the detection performance of various malicious tampering.
關鍵字Semi-fragile Watermark;Real Symmetric Matrix;Eigenvlaue;Geometric Invariance;Zernike Transform
語言英文
ISSN1560-6686
期刊性質國內
收錄於
產學合作
通訊作者
審稿制度
國別中華民國
公開徵稿
出版型式,電子版
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