Binary document image watermarking for secure authentication using perceptual modeling
Puhan, Niladri D. and Ho, Anthony T. S. (2005) Binary document image watermarking for secure authentication using perceptual modeling In: Proceedings of the Fifth IEEE International Symposium on Signal Processing and Information Technology, 2005..
In this paper, we propose a new perception based watermarking algorithm in binary document images for secure authentication purpose. Binary image watermarking with pixel flipping approach is a challenging problem, because flipping the black and white pixels in such simple images can bring noticeable visual distortion. A novel perceptual based model was proposed towards digital watermarking of binary images in the paper of A.T.S. Ho et al. (May 2004). The model estimates the distortion resulting from flipping of a pixel by finding the curvature-weighted distance difference (CWDD) measure between original and watermarked contour segments. In this paper, the reversible property of the CWDD measure is used towards designing a new authentication watermarking algorithm so that the possibility of any undetected modification to the watermarked image is removed. This algorithm embeds an authentication signature computed from the original image into itself after identifying an ordered set of low-distortion pixels. The same ordered set of pixels are correctly found in both the embedder and blind detector through the design of necessary conditions. The ability of the proposed authentication algorithm to detect any modification in the watermarked image is equivalent to the security of cryptographic authentication. The parity attack found in the previous block-wise data hiding methods in binary images is not possible in the proposed algorithm due to pixel-wise embedding of the authentication signature. Simulation results show the imperceptibility of the watermarking process and successful detection of content modifications.
|Item Type:||Conference or Workshop Item (UNSPECIFIED)|
|Divisions :||Faculty of Engineering and Physical Sciences > Computing Science|
|Date :||18 December 2005|
|Additional Information :||This article was published when Anthony T. S. Ho was at Nanyang Technological University, Singapore. In Proceedings of the Fifth IEEE International Symposium on Signal Processing and Information Technology, 2005. , pp. 393- 398.© 2005 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.|
|Depositing User :||Mr Adam Field|
|Date Deposited :||27 May 2010 14:45|
|Last Modified :||23 Sep 2013 18:35|
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