| 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 | en |
| ISSN | 1560-6686 |
| 期刊性質 | 國內 |
| 收錄於 | |
| 產學合作 | |
| 通訊作者 | |
| 審稿制度 | 否 |
| 國別 | TWN |
| 公開徵稿 | |
| 出版型式 | ,電子版 |
| 相關連結 |
機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/52802 ) |
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