Content Protection for audio and video with secret key using Multi-wavelet
Abstract
Now-days Digital watermarking is a technology being developed to ensure and facilitate data authentication, copyright protection andsecurity of digital media. The most important properties of digital watermarking techniques are robustness, transparency, security, capacity, invert ability (reversibility) and complexity and possibility of verification. A transparent watermark causes no artifacts or quality loss.The success of the Internet, cost-effective and popular digital recording, storage devices and the promise of higher bandwidth, quality of service for both wired and wireless networks have made it possible to create, transmit, replicate, and distribute digital content in an effortless way. Digital video watermarking technique was introduced by Hembrookein 1954. Watermarking is a concept of embedding special symbol or logo or pattern watermark, in to video so that some copyright information is fed into it. This information can inform users about authority to permit the useof data, it can later prove for ownership, identify misappropriate persons, tracking of the video [1].In this paper, we proposed a digital video watermarkingwith authentication for tutorial video using Multi-wavelet. In first host video is separated into video shots. Then from each video shot one video frame is selected for embedding watermark. Each identical frame is decomposed into 3-level DWT, then select higher subband coefficients to insert the watermark and thewatermark are embedded to these coefficientsand thus guarantee perceptual unobtrusive of watermark. The paper represents the complete software implementation of 3-Level DWT algorithms and to have moresecure data a secret key is used. The secret key is given to watermark image during embedding process and while extracting the watermark image the same secret key is used.
References
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