Digital Watermarking Scheme Based on Arnold and Anti-Arnold Transforms

摘要

The goal of an image watermarking scheme is to embed a watermark that is robust against various types of attacks while preserving the perceptual quality of the cover image. In this paper, a discrete cosine transform and singular value decomposition based digital image watermarking scheme that makes use of Arnold transform is proposed. The basic idea behind the proposed Arnold transform based watermarking scheme is to improve the robustness of the watermarked image, while providing complete security to the embedded watermark. The new scheme is shown to retain the perceptibility of the cover image in the watermarked image due to the discrete cosine transform and singular value decomposition based watermark embedding. Extensive experiments are performed to demonstrate the performance of the proposed scheme in providing security to the watermark content, preserving the perceptibility of the cover image and in being robust against various types of attacks on the watermarked image.