A block-based watermarking scheme for image tamper detection and self-recovery

文化大學機構典藏 CCUR > 新聞暨傳播學院 > 資訊傳播學系暨資訊傳播研究所 > 期刊論文 > Item 987654321/26796

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题名:	A block-based watermarking scheme for image tamper detection and self-recovery
作者:	Chang, YF (Chang, Y.-F.) Tai, WL (Tai, W.-L.)
贡献者:	Dept Informat Commun
关键词:	Fragile watermarking image authentication tamper localization tamper detection
日期:	2013-06
上传时间:	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
显示于类别:	[資訊傳播學系暨資訊傳播研究所] 期刊論文

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