Protection of digital watermarking based on SVD against false positive detection vulnerability

Abstract

The singular value decomposition (SVD) is drawing the attention as a new transform technique for robust digital watermarking, from the fact that slightly alterations don't affect the image quality. However; several SVD based watermarking algorithms have a serious limitation causing the false positive detection vulnerability. In this paper, we propose watermarking system to counterattack the weakness above mentioned; the proposed technique use the sharing secret principle to calculate secret keys to be embedded in the singular vectors of the watermark as a control parameter, this step invariably ensures that watermark extraction from the watermarked image, using a modified matrix, is not possible, even if it was attacked. Experimental results demonstrate the robustness of our method against attacks.