Digital Image Watermarking Using Fuzzy Logic and Genetic Algorithm
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International Journal of Computer Trends and Technology (IJCTT) |  |
| © 2016 by IJCTT Journal | ||
| Volume-41 Number-2 |
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| Year of Publication : 2016 | ||
| Authors : Arun Kumar R, T.Venkat Narayana Rao |
Arun Kumar R, T.Venkat Narayana Rao "Digital Image Watermarking Using Fuzzy Logic and Genetic Algorithm". International Journal of Computer Trends and Technology (IJCTT) V41(2):101-106, November 2016. ISSN:2231-2803. www.ijcttjournal.org. Published by Seventh Sense Research Group.
Abstract -
The need for digital image copyright protection methods has become vital foundation in multimedia applications due to the rapid growth of unauthorized access. Thus, multimedia data protection is one of the major challenges and has drawn the attention of several researchers towards the development of protection approaches. Digital watermarking is one among the several protection methods that hides information. The main factors to be considered during watermark is imperceptibility and robustness. Imperceptibility is the quality that the host image should not be destroyed by embedding the watermark. Robustness implies the strength of watermark against various image processing attacks. Digital image watermarking is embedded using frequency domain. The perception of frequency domain is to embed the watermark into frequency coefficients of transformed image using the Discrete Cosine Transform (DCT), the Discrete Wavelet Transform (DWT), Singular Value Decomposition (SVD), or other techniques. In this paper, a new robust watermarking scheme is implemented based on DWT and SVD using Fuzzy Logic and Genetic Algorithm. In this system a reference image is used to extract the properties of original image. Directive contrast and threshold values are calculated to get a reference image. Fuzzy logic system is used to find the strength of watermark that has to be added to the original image while embedding. Genetic algorithm is implemented to find the positions for embedding the watermark in the host image. In order to test the quality and robustness, attacks are performed on watermarked image. Quantitative measures like PSNR, NCC are also calculated to test the watermarked image and extracted watermarks with and without attacks.
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Keywords
Water Marking, Digital Image, Fuzzy Logic, Genetic Algorithm.