The week's pick
Reseach Article
Entropy based Video Watermarking Scheme
| International Journal of Computer Applications |
| Foundation of Computer Science (FCS), NY, USA |
| Volume 50 - Number 7 |
| Year of Publication: 2012 |
| Authors: Angshumi Sarma, Amrita Ganguly |
10.5120/7785-0882
|
Angshumi Sarma, Amrita Ganguly . Entropy based Video Watermarking Scheme. International Journal of Computer Applications. 50, 7 ( July 2012), 32-37. DOI=10.5120/7785-0882
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.
References
- B. L. Gunjal, R. R. Manthalkar: "An Overview of Transform Domain Robust Digital Image Watermarking Algorithms," Journal of Emerging Trends in Computing and Information Sciences, Vol. 2, No. 1.
- S. Sinha, P. Bardhan, S. Pramanick, A. Jagatramka, D. K. Kole, A. Chakraborty, "Digital Video Watermarking using Discrete Wavelet Transform and Principal Component Analysis," International Journal of Wisdom Based Computing, Vol. 1 (2), August 2011.
- A. M. Kothari and V. V. Dwivedi, "Performance Analysis of Digital Video Watermarking using Discrete Cosine Transform," International Journal of Electrical and Computer Engineering Systems, Vol. 2, No. 1, 2011.
- R. T. Paul, "Review of Robust Video Watermarking Techniques," IJCA Special Issue on Computational Science - New Dimensions and Perspectives (3), pp. 90-95, 2011.
- Y. R. Lin, H. Y. Huang and W. H. Hsu, "An embedded watermark technique in video for copyright protection", IEEE, 18th International Conference on Pattern Recognition, Vol. 00, pp. 795-798, 2006.
- A. Al-Haj: "Combined DWT-DCT digital image watermarking," Journal of Computer Science 3 (9): pp. 740-746, 2007.
- S. K. Amirgholipour, A. R. Naghsh-Nilchi: "Robust Digital Image Watermarking Based on Joint DWT-DCT," International Journal of Digital Content Technology and its Applications Volume 3, Number 2, pp. 42-54, June 2009.
- W. H. Bin, Y. H. Liang, W. C. Dong, W. S. Ming: "A New Watermarking Algorithm Based on DCT and DWT Fusion," International Conference on Electrical and Control Engineering, pp. 2614 - 2617, 2010.
- M. Chandra, S. Pandey: "A DWT Domain Visible Watermarking Techniques for Digital Images," International Conference on Electronics and Information Engineering, pp. V2-421 - V2-427, 2010.
- R. Dubolia, R. Singh, S. S. Bhadoria and R. Gupta: "Digital Image Watermarking by Using Discrete Wavelet Transform and Discrete Cosine Transform and Comparison Based on PSNR," Communication Systems and Network Technologies (CSNT) International Conference on, pp. 593 - 596, 2011.
- M. Chandra, S. Pandey and R Chaudhary: "Digital Watermarking Technique for Protecting Digital Images," 3rd IEEE International Conference on Computer Science and Information Technology (ICCSIT), pp. 226 - 233, 2010.
- R. V. Franklin, GRS. Manekandan and V. Santhi, "Entropy based Robust Watermarking Scheme using Hadamard Transformation Technique," International Journal of Computer Applications, Vol. 12– No. 9, January 2011.
Index Terms
Keywords