How to watermarking phd thesis
of meaningful gray-scale images/logos as watermark. Title: Emphasized Digital Watermarking on Singular Value Decomposition in Frequency Domain. Simulation and analysis are presented to evaluate and demonstrate the improved and superior performance of the approach over existing reference watermarking schemes. The meaning of the word multipurpose" is to make the proposed scheme as single watermarking scheme (SWS) or multiple watermarking scheme (MWS) according to our requirement and convenience. The feasibility of this method and its robustness against different kind of attacks are verified by computer simulations. On the contrary, this is an attempt in which a new watermarking scheme is presented where the size of host image is very small when comparing to watermark image. Financial Support during PhD: Council of Scientific and Industrial Research (csir New Delhi). In chapter 8, encryption and watermarking techniques are integrated for the complete protection to improve the authentication of the images. In chapter 10, the salient contributions of the work described in this thesis are given with the future perspectives of work in this field. However these terminologies have their own philosophies, requirement and limitations.
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In chapter 5, a new variant of fractional Fourier transform namely multiresolution fractional Fourier transform and the normalized mass matrix for an image are developed and used for watermarking. Experimental evaluation demonstrates that the proposed scheme can withstand a variety of attacks. Therefore, the protection of digital media has become an imperative issue. In chapter 9, a new aspect of watermarking is presented. Prabir Kumar Biswas, Professor, Department of, electronics Electrical Communication Engineering, Head of the Centre, Computer Informatics Centre, Indian Institute of Technology Kharagpur, India. Defense: th August 2010. The major drawback of steganography is that the inserted message is removed easily after any intentional or un-intentional activity of intruder/attacker. In chapter 4, a robust reference watermarking scheme is presented by exploring the use of wavelet packet transform in digital watermarking.
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