Digital Video Watermarking Techniques and Comparative Analysis : A Review

There has been a remarkable increase in the data exchange over web and the widespread use of digital media. The mounting interest with reference to digital watermarking throughout the last decade is certainly due to the increase in the need of copyright protection. Applications of video watermarking in copy control, broadcast monitoring, finger printing, video authentication, copyright protection etc is immensely rising. The main aspects of information hiding are capacity, security and robustness. The skill of anyone detecting the information is security and robustness refers to the resistance to modification of the cover content before concealed information is destroyed. Video watermarking algorithms normally prefers robustness. In robust algorithm it is not possible to eliminate the watermark without rigorous degradation of the cover content. In this paper we first perform a survey on available video watermarking techniques then we perform a comparative analysis based on robustness and computational complexity of different watermarking algorithms. Keywords— Image Processing, Digital Video Watermarking, Spatial Domain, Frequency Domain, Copy Right Protection.

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