Secured and multi optimized image watermarking using SVD and entropy and prearranged embedding locations in transform domain

Digital watermarking is a branch of steganography, which is used to secure the copyright ownership of owner of the content available in digital form. It refers to an infrastructure where any digital content is added into a cover data while maintaining its quality. A technique using concepts of DWT, SVD, entropy and pixel position shuffling is proposed to achieve the robustness, imperceptibility and security characteristics of watermarking. To provide security feature, embedding is performed on particular pixel positions rather than performing it linearly. Two performance measures PSNR and NC are calculated to measure the performance of the scheme. A PSNR value greater than 40 dB is achieved by the scheme. The results of experiments show that this scheme is robust against various attacks like rotation, gaussian noise, JPEG compression, weiner filtering etc.