New Image Watermarking Algorithm Based on DWT and Pixel Movement Function PMF
Razika Souadek and Naceur-Eddine Boukezzoula
Department of Electronic, University of Setif 1,
Republic Algeria
Abstract: In this
paper, we propose a new algorithm of image watermarking based on Discrete
Wavelet Transform (DWT) including a function for pixels movement. The proposed
algorithm uses DWT of two levels in order to compact a higher energy in
component LL1, and Contrast Sensitivity Function (CSF) to improve the invisibility
and robustness, the new Function of Pixel Movement (PMF) is applied to increase
the security properties. Pixel Movement Function (PMF) is a function of N
iteration inside each block, this function required a changeable key K
calculated in each iteration N for the position of each block. Numerical
experiments are performed to demonstrate that the proposed method can improve
watermarking quality in terms of imperceptibility of watermark, capacity of
insertion and robustness against different attacks such as Joint Photographic
Experts Group (JPEG) compression, noise addition and geometrical attacks.
Keywords: Wavelet transforms,
image watermarking, image quality
evaluation.
Received June 8, 2016; accepted May 7, 2018
https://doi.org/10.34028/iajit/17/1/1