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Nonblind Watermarking for Color Images using DWT Hybrid Technique
Abstract
Watermarking is the method of embedding data into multimedia content such as image, audio and video file for the purpose of copyright protection. The watermarking technique has developed greatly and became the powerful tool for protection of multimedia contents. A robust nonblind watermarking scheme has been proposed and images are exposed to various attacks. This method uses DWT-DCT combination for effective watermarking. The color image is converted to Luminance (Y), Intensity (I) and Hue (Q) components. Haar wavelet transform is used for the decomposition of luminance component. Three level decomposition of DWT is performed here. The color image of size 512x512 is taken as the cover image and watermark of size 32x32 is embedded in cover image. Robustness and imperceptibility are the two main factors influencing the quality of the watermarked image. The strength of the watermarking scheme has been evaluated in terms of metrics like PSNR and Correlation coefficient after exposing the embedded image to a wide range of aggressive image processing operations like noise, rotation, filtering, compression etc. The watermark is retrieved after each attack. The DWT provides flexibility in providing the choice of embedding location while the DCT provides the necessary robustness towards intentional and unintentional attacks. A Composite payload is used and the effect of variation of payload over the image quality is also studied
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References
Baisal L. Gunjal, Suresh N. Mali „ Secured Color Image Watermarking Technique in DWT- DCT Domain‟ International journal of Computer Science, Engineering and Information Technology (IJCSEIT), Vol.1, No.3, August 2011.
Chiou-Ting Hsu, Ja Ling Wu “Hidden Digital Watermarks in Images” IEEE Transactions on Image Processing, Vol.8, No.1, January 1999.
Chiou-Ting Hsu, Ja Ling Wu “Multiresolution Watermarking for Digital Images” IEEE Transactions on Circuits and Systems-2: Analog and Digital Signal Processing, Vol.45, No.8, August 1998.
Chun Shien Lu, Hong-Yuan Mark Liao “Multipurpose Watermarking for Image Authentication and Protection” IEEE Transactions on Image Processing, Vol.10, No.10, October 2001.
Der Chyuan Lou, Jiang Lung Liu, Ming-Chang Chang, Chin-Chiang Pan, and Chao-Lung Chou „Adaptive DWT-Based Watermarking Scheme Using Neighbouring Mean Value Relationship‟The 2004 IEEE Asia-Pacific Conference on Circuits and Systems, December 6-9,2004.
Dhandapani Samiappan, Krishnan Anmasai „Robust Digital Image Watermarking for Color images‟ European Journal of Scientific Research Vol.76, No.1, 2012.
Kilary Veera Swamy, B. Chandra Mohan, Y .V. Bhaskar Reddy, S. Srinivas Kumar “Image Compression and Watermarking scheme using Scalar Quantization” The International Journal of Next Generation Network(IJNGN),Vol.2,No.1,March 2010.
Mauro Barni, Franco Bartolini, Vito Cappellini, Alessandro Piva “A DCT-domain system for robust image watermarking” Signal Processing 66 1998.
Mauro Barni, Franco Bartolini, Alessandro Piva “Improved Wavelet-Based Watermarking Through Pixel-Wise Masking” IEEE Transactions on Image Processing, Vol.10, No.5, May 2001.
Martin Kutter, Sviatoslav Voloshynovskiya, Alexander Herrigela “The Watermark Copy Attack” Proceedings of SPIE: Security and Watermarking of Multimedia Content II, Vol. 3971, January 2000.
Nagaraj V. Dharwadkar, B.B. Amberker „ An Efficient Nonblind Watermarking scheme for color images using Discrete Wavelet Transformation‟ International Journal of Computer Applications Vol. 2 , No. 3, May 2010.
Neha Gupta, Dr. Mukesh Sharma „ Invisible multiple watermarking with minimum Distortion using DWT-DCT-CDMA‟ International Journal of Computer Science and Engineering Technologies Vol. 3, No.8, August 2012.
Ning Liu, Palak Amin, and K.P. Subbalakshmi “Security and Robustness Enhancement for Image Data Hiding” March 9, 2006.
Pao Chi Chang, Ta te lu, Li Lin Lee „Blockwise Image Watermarking System with Selective Data Embedding in Wavelet Transform Domain‟ Security and Watermarking of Multimedia Contents IV, Proceedings of SPIE Vol. 4675, 2002.
R. Eswaraiah, Sai Alekhya Edara „ Color Image Watermarking Scheme ussing DWT and DCT coefficients of R, G, B color components‟ International Journal of Computer Applications Vol. 50, No.8, July 2012.
S. Radharani, Dr. M. L. Valarmathi „ Content Based Hybrid DWT- DCT Watermarking for Image Authentication in color images‟ International Journal of Engineering Inventions Vol. 1, September 2012.
Surya Pratap Singh, Paresh Rawar, Sudhir Agarwal „ Robust Watermarking approach using DCT- DWT‟ International Journal of Emerging Technology and Advanced Engineering Vol.2 , August 2012.
Vikas Saxena, J.P Gupta „Collusion Attack Resistant Watermarking Scheme for Colored Images using DCT‟ IAENG International Journal of Computer Science 17 November 2007.
Samira Mabtoul, Elhassan Ibn Elhaj, and Driss Aboutajdine “Robust Semi-Blind Digital Image Watermarking Technique in DT-CWT Domain” International Journal of Electrical and Computer Engineering, 2009.
V.Shanthi, Dr.Arunkumar Thangavelu „DWT-SVD Combined Full Band Robust Watermarking Technique for Color Images in YUV Color Space‟ International Journal of Computer Theory and Engineering, Vol. 1, No. 4, October2009 1793-8201.
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