Open Access

A Sharing-Based Fragile Watermarking Method for Authentication and Self-Recovery of Image Tampering

EURASIP Journal on Advances in Signal Processing20092008:846967

https://doi.org/10.1155/2008/846967

Received: 15 August 2008

Accepted: 24 December 2008

Published: 15 February 2009

Abstract

This study presents an authentication method with self-recovery ability. The hidden watermark in the proposed method not only detects and locates the tampered portion of an image, but also self-recovers the tampered portion. To increase the ability to recover from tampering, the recovery data are shared by using an (r, n) threshold scheme and then scattered all over the image. Experimental results indicate that the visual quality of the watermarked image is acceptable, and that the positions of the tampered portions can be identified. Most importantly, the self-recovery result is very competitive.

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Authors’ Affiliations

(1)
Department of Computer Science, National Chiao Tung University
(2)
Department of Computer Science and Engineering, Yuan Ze University

Copyright

© Yu-Jie Chang et al. 2008

This article is published under license to BioMed Central Ltd. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.