Lossless watermarking technique for copyright protection of high resolution images

With the revolution of E-commerce websites, there is a great need for development of copyright protection techniques, which are able to detect ownership from the Intellectual Property. In this paper, a novel watermarking method, is proposed as a solution for copyright protection of very high resolution images. Application of the concept of Visual Cryptography and Central Limit Theorem, on a Correlation Matrix obtained from the image to be protected is the key approach used in this paper, so as to satisfy the requirements. The proposed method have merits such as 100^% imperceptibility and unrestricted watermark image size, without compromising robustness.