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Author Ababneh, Sufyan ♦ Ansari, Rashid ♦ Khokhar, Ashfaq
Source ACM Digital Library
Content type Text
Publisher Association for Computing Machinery (ACM)
File Format PDF
Copyright Year ©2010
Language English
Subject Domain (in DDC) Computer science, information & general works ♦ Data processing & computer science
Subject Keyword Content authentication ♦ Compensated signature embedding ♦ Watermarking
Abstract One of the main goals of digital content authentication and preservation techniques is to guarantee the originality and quality of the information. In this article, robust watermarking is used to embed content-based fragile signatures in multimedia signals to achieve efficient authentication without requiring any third-party reference or side information. To overcome the signature alteration caused by the embedding perturbation and other possible encoding operations, a closed-form compensation technique is proposed for ensuring signature consistency by employing a Lagrangian-based approach. A minimum distortion criterion is used to ensure signal quality. The effectiveness of the proposed approach is investigated with simulations of examples of image authentication in which signatures are designed to reveal tamper localization. Results using quantitative performance criteria show successful authentication over a range of robustness in embedding watermarks using both QIM-DM and spread-spectrum techniques. A comparison with two iterative compensation schemes is also presented.
ISSN 19361955
Age Range 18 to 22 years ♦ above 22 year
Educational Use Research
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2009-12-01
Publisher Place New York
e-ISSN 19361963
Journal Journal of Data and Information Quality (JDIQ)
Volume Number 1
Issue Number 3
Page Count 20
Starting Page 1
Ending Page 20

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Source: ACM Digital Library