NORMALIZATION CROSS CORRELATION VALUE OF ROTATIONAL ATTACK ON DIGITAL IMAGE WATERMARKING BY USING SVD-DCT

Vikas Chaubey, Komal Goyal, Amita Garg

Abstract: The WWW (World Wide Web) is a superb sales and distribution medium for digital image assets, but official document compliance and important data can be a call to prove or justify it. Present days, digital image, audio and video used all over world with or without agreement. In digital image watermarking answer let you add extra layer of protection (added logo) to your digital image. By using Singular Value Decomposition - Discrete Cosine Transfer we are finding Normalization Cross Correlation coefficient value of attacking (rotational attack) on digital image watermarking. The Normalization Cross Correlation coefficient value depended on step size of digital image. If you change the value of step size than our results are different.

Keywords: SVD, DCT, Orthogonal Matrix, NCC, Watermarking.

DOI: https://doi.org/10.15623/ijret.2014.0308041