Comparative Study of DWT and DWT-SVD Image Watermarking Techniques

⎯ Digital image watermarking is hiding information in any form (text, image, audio and video) in original image without degrading its perceptual quality. Watermarking is done for copyright protection of the original data. In this paper, we have done a comparative study of two most recent techniques used in digital image watermarking; they are DWT and hybrid DWT-SVD. Both these techniques are very much robust and imperceptible. In case of DWT, decomposition of the original image is done to embed the watermark and in case of hybrid DWT-SVD firstly image is decomposed according to DWT and then watermark is embedded in singular values obtained by applying SVD. Here, the techniques are compared on the basis of PSNR value at different values of scaling factor, high value of PSNR is desired as it shows good imperceptibility of the technique.

[1]  Mohsen Kariman Khorasani,et al.  An DWT-SVD Based Digital Image Watermarking Using a Novel Wavelet Analysis Function , 2012, 2012 Fourth International Conference on Computational Intelligence, Communication Systems and Networks.

[2]  Frank Hartung,et al.  Multimedia watermarking techniques , 1999, Proc. IEEE.

[3]  Hitesh Gupta,et al.  Survey of Digital Image Watermarking Techniques to achieve Robustness , 2012 .

[4]  Sachin R. Gengaje,et al.  Literature Review of Wavelet based Digital Image Watermarking Techniques , 2011 .

[5]  V. K. Srivastava,et al.  A DWT-DCT-SVD based digital image watermarking scheme using particle swarm optimization , 2012, 2012 IEEE Students' Conference on Electrical, Electronics and Computer Science.

[6]  M. Manjunath,et al.  A new robust semi blind watermarking using block DCT and SVD , 2012, 2012 IEEE International Conference on Advanced Communication Control and Computing Technologies (ICACCCT).

[7]  Sud Sudirman,et al.  Recent Advances and Classification of Watermarking Techniques in Digital Images , 2009 .

[8]  L. Demanet.  Curvelets, Wave Atoms, and Wave Equations , 2006 .

[9]  M. Mohammed Sathik,et al.  A Novel DWT Based Invisible Watermarking Technique for Digital Images , 2012, Int. Arab. J. e Technol..

[10]  Markus G. Kuhn,et al.  Information hiding-a survey , 1999, Proc. IEEE.