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The achievement of multimedia content authentication by means of digital watermarking, while never easy, is further complicated by the continuing investigation of different ways of generating authentication signatures which survive specific acceptable manipulations. In this paper, we present a novel approach which takes advantage of a multiscale framework(More)
In this paper, we propose a novel approach which takes advantage of a redundant contourlet transform to extract invariant image features and generate content-based image signatures for authentication purpose. We also describe the process of incorporating error control coding as a means for achieving semifragile authentication. Several experiments are(More)
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