%0 Journal Article
%T A Robust Image Watermarking Scheme using Singular Value Decomposition
%A B.Chandra Mohan
%A S. Srinivas Kumar
%J Journal of Multimedia
%D 2008
%I Academy Publisher
%R 10.4304/jmm.3.1.7-15
%X This paper presents a robust image watermarking scheme for multimedia copyright protection. In this work, host image is partitioned into four sub images. Watermark image such as ¡®logo¡¯ is embedded in the two of these sub images, in both D (singular and diagonal matrix) and U (left singular and orthogonal matrix) components of Singular Value Decomposition (SVD) of two sub images. Watermark image is embedded in the D component using Dither quantization. A copy of the watermark is embedded in the columns of U matrix using comparison of the coefficients of U matrix with respect to the watermark image. If extraction of watermark from D matrix is not complete, there is a fair amount of probability that it can be extracted from U matrix. The proposed algorithm is more secure and robust to various attacks, viz., JPEG2000 compression, JPEG compression, rotation, scaling, cropping, row-column blanking, row-column copying, salt and pepper noise, filtering and gamma correction. Superior experimental results are observed with the proposed algorithm over a recent scheme proposed by Chung et al. in terms of Bit Error Rate (BER), Normalized Cross correlation (NC) and Peak Signal to Noise Ratio (PSNR).
%K Digital image watermarking
%K Singular values
%K Singular value decomposition
%K Dither quantization
%U http://ojs.academypublisher.com/index.php/jmm/article/view/2185