Abstract
Problem statement: Video watermarking is well known as the process of embedding copyright information in video bit streams. It had been proposed in recent years to solve the problem of illegal manipulation and distribution of digital video. Approach: In this study, an effective, robust and imperceptible video watermarking algorithm was proposed. This algorithm was based on a cascade of two powerful mathematical transforms; Discrete Wavelets Transform (DWT) and Singular Value Decomposition (SVD). Two different transform domain techniques showed high level of complementary and different levels of robustness against the same attack will be achieved through their combination. Results: The proposed algorithm was tested against imperceptibility and robustness and excellent results were obtained. Conclusion: Experimental results demonstrate the robustness achieved by combining the two transforms.
Highlights
Digital video is becoming popular more than ever due to the widespread of video-based applications such as Internet video, videophones, wireless video, video conferencing, among many others
Imperceptibility refers to perceptual transparency and it requires that the watermarking algorithm to embed the watermark in such a way that the quality of the underlying video frames is not affected
We evaluated the performance of our proposed Discrete Wavelets Transform (DWT)-Singular Value Decomposition (SVD) video watermarking algorithm using a colored video clip having a size of 351 frames
Summary
Digital video is becoming popular more than ever due to the widespread of video-based applications such as Internet video, videophones, wireless video, video conferencing, among many others. A byproduct of such popularity is the worldwide unauthorized copying and distribution of digital video. Digital watermarking has been proposed in recent years to prevent illegal and malicious copying and distribution of digital media by embedding an unnoticeable information (called a watermark) into the media content[1]. Effective watermarking has many requirements, the most important of which are imperceptibility and robustness. Imperceptibility refers to perceptual transparency and it requires that the watermarking algorithm to embed the watermark in such a way that the quality of the underlying video frames is not affected. As for the robustness requirement, the watermark must always remain in the watermarked video frames, even if the quality of the frames is degraded intentionally or unintentionally[2]
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