Security issues have almost been ignored during the first decade of digital watermarking. As a result, many released watermarking algorithms are weak against hostile intelligence. For instance, block replacement attacks defeat watermarking systems which do not consider the self-similarities of the host signal during embedding. Such attacks replace each signal block with another one, or a combination of other ones, taken at a different location. In this paper, a novel strategy will be presented to generate a signal coherent watermark to achieve immunity against block replacement attacks. The basic idea consists in imposing a linear relationship between watermark samples embedded at different locations, with respect to their local neighborhoods which are characterized with Gabor features.
A Countermeasur to Resist Block Replacement Attacks
IEEE International Conference on Image Processing 2005 ; 1 ; 965-968
2005-01-01
102475 byte
Conference paper
Electronic Resource
English
A Countermeasure to Resist Block Replacement Attacks
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