Optimization of Fidelity in Digital Image Watermarking Using a New Genetic Algorithm
Dasaratharaman Venkatesan, K. Kannan, S. Raja Balachandar · 2012
In this paper we present a New Genetic Algorithm based on Center of Mass Selection Operator (CMGA), to find the optimum locations for digital watermark insertion in a cover image, by focusing on the issue of optimizing Fidelity. The various existing techniques based on spatial and frequency domain suffers with poor Fidelity problems. In this paper we have used a center of mass selection operator based Genetic Algorithm, to investigate the variation of maximum fitness based on the higher PSNR value of watermarked image, against embedding strength, number of genes, various payload of digital watermark. Our experimental results show that, this New Genetic Algorithm provides much better solutions than the simple Roulette-wheel based Genetic Algorithm (RWGA).