Abstract: The digital technology enables unauthorized replica of digital images, the protection of the copyrights of digital image is a critical issue. Image watermarking schemes are used to protect the digital images. The Capacity implies total which are placed to guard image. More capacity implies one can cover wide range of information Also the watermark scrambling utilizing the Arnold transform is used to protect watermark further. Arnold transform has changed the watermark in this way that it becomes meaningless for the hackers or crackers. Different type of multiple attacks will also be considered to evaluate the effectiveness of the proposed technique. The proposed technique is designed in MATLAB tool with the help of image handling toolbox. The experiment has clearly shown that the proposed technique has better results over the available techniques.
Keywords: Watermarking Scheme, FFT, Arnold transform, SVD technique.