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Article type: Research Article
Authors: Govindaswamy, Umamaheswari | Shanmugam, A.
Affiliations: ECE Department, PSG College of Technology, Coimbatore, India
Abstract: As the use of digital media becomes ever more widespread, the data distribution process is becoming faster and easier, while requiring less effort to make exact copies. One of the major challenges for intellectual property protection of digital media is to discourage unauthorized copying and distribution. Digital watermarking has been proposed as a way to claim the ownership of the source and owner. To achieve maximum protection, the watermark should be perceptually invisible, statically undetectable, resistant to lossy data compression, and resistant to common image processing operations. Besides perceptual invisibility, private control of the watermark is also very important. In this paper, a private key-dependent, wavelet-based lifting scheme is proposed to improve the security of the image authentication algorithm. Experimental results show that the embedded watermark is robust against various signal processing and compression attacks.
Keywords: digital watermark, authentication, security, filter banks, wavelet, adaptive lifting scheme, robustness
Journal: Journal of Integrated Design & Process Science, vol. 9, no. 4, pp. 71-80, 2005
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