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請使用永久網址來引用或連結此文件:
https://irlib.pccu.edu.tw/handle/987654321/26796
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| 題名: | A block-based watermarking scheme for image tamper detection and self-recovery |
| 作者: | Chang, YF (Chang, Y.-F.)
Tai, WL (Tai, W.-L.) |
| 貢獻者: | Dept Informat Commun |
| 關鍵詞: | Fragile watermarking
image authentication
tamper localization
tamper detection |
| 日期: | 2013-06 |
| 上傳時間: | 2014-02-26 15:52:56 (UTC+8) |
| 摘要: | In this paper, we present an effective block-based digital fragile watermarking scheme for image tamper detection and recovery. The proposed scheme embeds watermarks consisting of the authentication data and the recovery data into image blocks. It adopts parity check and the intensity-relation check to thwart various malicious attacks. In the tamper detection process, instead of independently testing the embedded authentication data of each block, we take the block-neighbourhood into account and utilize a hierarchical structure to determine the legitimacy of image blocks. Experimental results show that the proposed scheme can effectively resist collage attack, vector quantization (VQ) attack and constant-average attack, while sustaining superior accuracy of tamper localization. Furthermore, the results reveal that the tampered images can be successfully self-recovered with acceptable visual quality. |
| 關聯: | OPTO-ELECTRONICS REVIEW Volume: 21 Issue: 2 Pages: 182-190 |
| 顯示於類別: | [資訊傳播學系暨資訊傳播研究所] 期刊論文
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