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Journal of Electronic Imaging

Comments on “Robust embedding of visual watermarks using discrete wavelet transform and singular value decomposition” and theoretical analysis
Author(s): Liang Xiao; Zhihui Wei; Jianbing Ye
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Paper Abstract

It is shown that the watermarking algorithm presented in another paper [Ganic and Eskicioglu, J. Electron. Imaging 14, 043004 (2005)] has a very high probability of a false-positive answer and has its limitations in practice. Furthermore, the intrinsic reasons of the high false-alarm probability are as follows: the basis space of singular value decomposition is image content dependent, there is no one-to-one correspondence between singular value vector and image content, because singular value vectors have no information on the structure of image. Thus, the most important reason is a result of a false conception to insert watermark singular value vectors without information on the structure of the watermark. Finally, some examples are given to prove our results of theoretical analysis.

Paper Details

Date Published: 1 October 2008
PDF: 3 pages
J. Electron. Imag. 17(4) 040501 doi: 10.1117/1.3041170
Published in: Journal of Electronic Imaging Volume 17, Issue 4
Show Author Affiliations
Liang Xiao, Nanjing Univ. of Science & Technology (China)
Zhihui Wei, Nanjing Univ. of Science & Technology (China)
Jianbing Ye

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