Digital image watermarking using uncorrelated color space

The exponential growths in electronic data over internet have increase the demand of a robust and high quality watermarking method for authentication and copyright protection. The available digital image watermarking methods generally use the correlated color spaces which impose the limitations to researchers for using only one color component at a time for embedding the watermark. Therefore, in this paper, a novel DWT based digital image watermarking method has been proposed which embeds the gray scale watermark into color host image using uncorrelated color space (UCS) and genetic algorithm (GA) method. The result shows that the proposed method outperforms other existing methods against the various signal processing attacks. The proposed method is a first inline report which uses uncorrelated color space for digital image watermarking.