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Entropy based Video Watermarking Scheme

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International Journal of Computer Applications
© 2012 by IJCA Journal
Volume 50 - Number 7
Year of Publication: 2012
Authors:
Angshumi Sarma
Amrita Ganguly
10.5120/7785-0882

Angshumi Sarma and Amrita Ganguly. Article: Entropy based Video Watermarking Scheme. International Journal of Computer Applications 50(7):32-37, July 2012. Full text available. BibTeX

@article{key:article,
	author = {Angshumi Sarma and Amrita Ganguly},
	title = {Article: Entropy based Video Watermarking Scheme},
	journal = {International Journal of Computer Applications},
	year = {2012},
	volume = {50},
	number = {7},
	pages = {32-37},
	month = {July},
	note = {Full text available}
}

Abstract

The emerging interest in the field of digital watermarking is due to the increase in concern over copyright protection of digital information and prevention of unauthorized access, duplication and manipulation of digital data. In this paper, an entropy based blind video watermarking scheme is proposed using combined DCT-DWT transform. Two level DWT is performed on the extracted video frames, which results in sixteen subbands. Entropy is calculated for all the sixteen subbands and the subband with the highest entropy is chosen for embedding the watermark bits. 8x8 block based DCT is performed on this subband and the middle frequency transformed coefficients of each block are selected for embedding the watermark bits. The watermarked video frames are QPSK modulated and transmitted through an AWGN channel. At the receiver end the watermarked frames are QPSK demodulated and the watermark is extracted. This scheme applied to videos shows that it is highly imperceptible and exhibits high robustness against additive white Gaussian noise.

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