A NOVEL IMAGE ZERO-WATERMARKING SCHEME BASED ON DWT-BN-SVD

This paper presents, a novel watermarking scheme for digital images which overcomes the problems associated with singular value decomposition. Here, the singular values of the host image are modified using the principal components of the watermark in the DWT domain for providing copyright protection as well as reliability. This method accomplishes with an incorporation of fractional singular values in the scheme for finding the optimum scaling factors for efficient robustness and the fidelity of the scheme. By using this method we could eliminate the false positive problem and diagonal line problem which were found in the traditional singular value decomposition. the proposed scheme is tested under various forms of image processing attacks like noise addition, median filtering, JPEG compression, Geometric cropping Experimental results are provided to illustrate that the proposed scheme succeeded in providing copyright protection.