A reversible watermarking scheme for high-fidelity applications

Abstract

In this paper, we present a reversible watermarking scheme for high-fidelity applications. An improved histogram shifting technique is employed in this method to increase the embedding capacity and ameliorate the visual quality of the watermarked image. The method ensures that the modification of each pixel value is at most 1 in single pass embedding. In addition, two criteria, "near-lossless" and "almost-lossless", are used to evaluate the fidelity of our method. Experimental results and performance comparison with other recently proposed reversible watermarking schemes clearly demonstrate that our method outperforms the previous ones. © 2009 Springer-Verlag Berlin Heidelberg.