CORRELATION-BASED MODEL OF COLOR PICTURE WATERMARKING AGAINST RANDOM GEOMETRIC DISTORTION (FriPmOR5)

Author(s) : Isao Echizen (Hitachi, Ltd., Systems Developmenent Lab., Japan) Yasuhiro Fujii (Hitachi, Ltd., Systems Developmenent Lab., Japan) Takaaki Yamada (Hitachi, Ltd., Systems Developmenent Lab., Japan) Satoru Tezuka (Hitachi, Ltd., Systems Developmenent Lab., Japan) Hiroshi Yoshiura (University of Electro-Communications, Japan)

Abstract : Random geometric distortion is one of the most difficult kinds of image processing to survive and has been a noted problem in watermarking research. Previous methods for dealing with random geometric distortion, however, are accompanied by large computational overhead or by operational inconvenience. This paper therefore proposes a method based on embedding watermark patterns in two of the three color planes constituting a color picture so that these two planes have a specific correlation, because random geometric distortion does not affect the correlation between any two. Experimental evaluations using StirMark confirmed that embedded information of 64 bits can be correctly detected without using searches or special patterns.

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