A Compressive Sensing Approach to DCT Watermarking System

Digital watermarking techniques are becoming necessary in developing society due to rapid growth of technology and high internet usage. It concerns with embedding the authentication identity into the digital media to prevent the media duplication and unauthorized access. DCT watermarking is considered as the simplest image watermarking scheme, which offers better robustness against the signal processing attacks. But this system has poor performance towards channel attacks particularly AWGN. In this paper, we in-cooperate the features of Compressive Sensing (CS) with DCT watermarking system. This is done by embedding the compressively sensed watermark into the DCT coefficients of the cover image. The results show that, watermark can be successfully extracted from the noisy environment. This proposed system also improves the embedding capacity, security and offers better transparency.