Robust signature-based copyright protection scheme using the most significant gray-scale bits of the image

Authors:
Mohammad Awrangjeb
Affiliations:
Department of Infrastructure Engineering, University of Melbourne, VIC, Australia
Venue:
Advances in Multimedia
Year:
2012

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Abstract

The most significant bit- (MSB-) plane of an image is least likely to change by the most signal processing operations. This paper presents a novelmultibit logo-based signature, using themost significant gray-scale bits, which is then used to develop an extremely simple but robust copyright protection scheme, where images along with their signatures are sent to a trusted third party when a dispute arises. Different ways of processing the MSB-plane before calculating the robust signature have been developed. This paper then presents an innovative classifier-based technique to test the robustness and uniqueness of any signature-based scheme. A new MSB-based attack, which would defeat our scheme most, has also been proposed. Experimental results have clearly demonstrated the superiority of the proposed scheme showing the high robustness of differentMSB-based signatures over the existing signaturebased schemes.