Earticle

초록

영어

In this paper a watermarking technique using hybrid wavelet transforms obtained from sinusoidal and non-sinusoidal component orthogonal transforms is proposed. Sinusoidal transform DCT and non-sinusoidal transforms Walsh, Haar and Discrete Kekre Transform are used to generate hybrid wavelet transforms namely DCT-Walsh, Walsh-DCT, DCT-Haar, Haar-DCT, DCT-DKT and DKT-DCT. Size of each component transform matrix is varied suitably from 4, 8, 16, 32, and 64 to generate hybrid wavelet transform matrix for host and watermark. The best size combination is further applied column wise and row wise to host and watermark and to embed the watermark middle frequency regions of host is selected. Embedding is first done without sorting the hybrid wavelet transform coefficients of host and watermark and then sorting is applied to observe the difference in the achieved robustness. Performance of proposed technique is evaluated against various attacks to decide whether sinusoidal transform when used as base transform matrix or local transform matrix is more robust.

목차

Abstract
 1. Introduction
 2. Review of Related Work
 3. Hybrid Wavelet Transforms
 4. Proposed Method
 5. Performance Against Image Processing Attacks
  5.1. Compression attack
  5.2. Cropping Attack
  5.3. Noise addition attack:
  5.4. Resizing attack:
 6. Conclusion:
 References

키워드

저자

• H. B. Kekre [ Senior Professor, MPSTME, NMIMS University, Mumbai ]
• Tanuja sarode [ Associate Professor, TSEC, Mumbai University, Mumbai ]
• Shachi Natu [ Ph. D. Research Scholar, MPSTME, NMIMS University, Mumbai ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  International Journal of Signal Processing, Image Processing and Pattern Recognition

• 간기

  격월간

• pISSN

  2005-4254

• 수록기간

  2008~2016

• 십진분류

  KDC 505 DDC 605