Earticle

초록

영어

Watermarking is an important technique used for copyright protection, authentication, tamper detection and hiding secret information in multimedia contents. In this article a new digital watermarking scheme is proposed based on multiple parameter discrete fractional Fourier transform and using least significant bit (LSB) technique. The multiple parameter discrete fractional Fourier transform (MPDFRFT) is the generalization of the discrete fractional Fourier transform (DFRFT) in terms of its different nature of its fractional orders. The MPDFRFT can converge to DFRFT when all of its fractional order parameters having a similar value. The multiple parameter discrete fractional transforms shows it’s superiority over DFRFT because of that it benefitted us with an extra degree of freedom that is provided by its multiple fractional orders. The LSB technique is more preferable because of its lesser effect on the image characteristics. During the implementation of proposed scheme cover image is subdivided and MPDFRFT is applied to each subdivided image to transformed coefficients and watermark images are embedded by using LSB technique. Similarly during watermark extraction process the reverse order of MPDFRFT is applied for reconstruction of original images along with LSB extraction mechanism. The MPDFRFT fractional order parameters are used as secret key to improve the robustness of the system. The robustness of the watermark image is tested under different attacks such as additive noise, cropping, rotation and Gaussian low-pass filtering is analyzed and the results demonstrate that the embedding scheme has good performance of robustness. The imperceptibility of the proposed scheme against the hostile person is also verified by simulations results.

목차

Abstract
 1. Introduction
 2. Definitions of FRFT, DFRFT and Formulation of MPDFRFT
 3. LSB Technique and Concept of Watermarking in DFRFT Domain
 4. Proposed Watermarking Scheme
 5. Performance Measuring Criterion
 6. Simulation Results and Discussion
 7. Conclusion
 Acknowledgements
 References

키워드

저자

• Deepak Sharma [ Department of Electronics and Communication Engineering, Jaypee University of Engineering and Technology, Guna, India ]
• Rajiv Saxena [ Department of Electronics and Communication Engineering Jaypee University, Anoopshahr, India ]
• Narendra Singh [ Department of Electronics and Communication Engineering, Jaypee University of Engineering and Technology, Guna, India ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  International Journal of Security and Its Applications

• 간기

  격월간

• pISSN

  1738-9976

• 수록기간

  2008~2016

• 등재여부

  SCOPUS

• 십진분류

  KDC 505 DDC 605