Watermarking of compressed images using SWT technique and fragile approach

The research and application of digital watermark is being paid more focus for content authentication. In recent times, the fast growth of the Internet has made copyright protection of digital contents a critical issue. Watermarking of multimedia content is important to authenticate, copy-control and ownership detection. The scheme used in this paper used two different categories of the watermark which are robust and fragile. Identity Number is used for ownership of the image and Hash function has been implemented to check the integrity of the image. The result of the experiment shows PSNR and SSIM of the watermarked image are higher than the existing technique.