Hybrid Approach for Robust Digital Video Watermarking.

Information Security

With the growing popularity of internet and digital media, digital watermarking techniques have been developed to protect the copyright of multimedia objects such as text, audio, video, etc. So, we have proposed a hybrid video watermarking technique which takes the advantages of different transforms like DWT, DCT, SVD and Arnold Transform, which enhances more security and provides robustness to the watermark, because there is lack of security in the existence system. In this paper method, video is divided into several groups of frames, and watermark will be embedded in every tenth of these video frames. Before embedding watermark in frames it will be pre-processed with Arnold Transform which will provide security to it. The planes of these video frames are decomposed using DWT and high frequency band HH; middle frequency bands LH, HL are transformed with DCT. The DCT coefficients are SVD transformed which are embedded with corresponding transformed coefficients of watermarks along with Arnold Transform. The embedded watermark is extracted with inverse process of embedding. The proposed algorithm is tested with various video sequences using MATLAB 2013a. Reported experimental results show the watermarked frames are indistinguishable from the original frames subjectively and demonstrate the effectiveness of the proposed algorithm against the geometric attacks such as blurring, rotating and salt and pepper.

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