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DWT-based multiple watermarking for privacy and security of digital images in e-commerce

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4 Author(s)
Kamble, S. ; Comput. Sci. & Eng., Motilal Nehru Nat. Inst. of Technol., Allahabad, India ; Maheshkar, V. ; Agarwal, S. ; Srivastava, V.K.

E-commerce has gained a wider popularity among consumers during 20th century and is one of the fastest growing segments of Internet today. However, due to openness of information on internet, security becomes an important issue. One of the solutions to this problem is digital watermarking. Multiple watermarking is an advanced digital watermarking which provides increased security and robustness as compared to singular watermarking. The existing multiple watermarking techniques lack the balance of trade off between imperceptibility, robustness and data payload. In this paper, we propose a DWT-based segmented robust spread transform watermarking technique to balance the above mentioned parameters. The use of multiple watermarks increases the embedding capacity of watermark as compared to the singular watermarking technique. Also, the spread transform disperse the watermark over a large number of frequencies providing robustness to volumetric as well as geometric distortions. The imperceptibility of watermark is good in terms of PSNR. Thus, the analytical and experimental results show that the proposed technique balances the trade off between imperceptibility, robustness and data payload.

Published in:

Multimedia, Signal Processing and Communication Technologies (IMPACT), 2011 International Conference on

Date of Conference:

17-19 Dec. 2011