A Compressed domain Based Robust and Imperceptible Digital Video Watermarking Scheme

The paper described a new MPEG-2 compressed domain based imperceptible, blind, robust, and secure digital video watermarking method. The scheme exploited the intra coding part of MPEG compression algorithm for inserting the watermark image as copyright information. Three cryptographic keys are used to extract the watermark. This process further enhances the security of overall watermarking algorithm. Therefore, proper extraction would never possible without negotiating the unique keys. The strength of the proposed algorithm evaluated the robustness by applying wide variety of frame-based attacks to measure grading of resemblance and divergence between the extracted and original watermark respectively. The dominance of the projected technique is to obtain the admirable result for robustness and perceptibility both. The perceptibility is maintained as the scheme doesn't require to change the motion vectors resultant from DPCM process while encoding the video through MPEG-2 compression standard.