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In this paper, a recently proposed reversible image watermarking algorithm based on reversible contrast mapping (RCM) is further developed. The integer transform, RCM, which is originally defined on a pair of integers, is extended to integer array of arbitrary length. Based on this generalization, the embedding capacity can be significantly increased. Meanwhile, the embedding distortion is well controlled...
A high capacity reversible data-hiding scheme for annotation is presented in this paper. The proposed scheme is based on a prediction-based lossless image compression technique. Annotation data are embedded into the predictive error values of a host image during the process of lossless compression of the host image. Annotation data can be exactly extracted and the original host image can be recovered...
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