Color Adaptive Robust DWT-SVD Watermarking Algorithm and Limitations : Color Space Comparisons

Abstract

Color image watermarking is a technique for digital data authentication and security. Because of the substantial differences in colour aspects, watermarking a colour image is a time-consuming and challenging problem. Noval algorithm DWT-SVD oriented colour image watermarking based on entropy, adapting colour components is proposed to designed in this paper. The algorithim is expected to improve invisibility, of the colour component with the least amount of information is chosen for watermark insertion. For watermark embedding, the is proposed algorithm takes advantage of dual-level security by employing the SVD of logo and wavelet coefficients. The performance of the proposed technique was also examined for three distinct colour spaces: RGB, YCbCr, and LAB. The comparison of watermarking and logo extraction is used to assess qualitative performance. Peak Signal-to-Noise ratio (PSNR) and Normalize cross Correlation (NC) is used in the parametric analysis under the exposure of the various attacks.