Nidal F. Shilbayeh and Belal AbuHaija and Zainab N. Al-Qudsy
Combined DWTCT Blind Digital Image Watermarking Algorithm
736 - 742
2013
7
6
International Journal of Computer and Information Engineering
https://publications.waset.org/pdf/13618
https://publications.waset.org/vol/78
World Academy of Science, Engineering and Technology
In this paper, we propose a new robust and secure
system that is based on the combination between two different
transforms Discrete wavelet Transform (DWT) and Contourlet
Transform (CT). The combined transforms will compensate the
drawback of using each transform separately. The proposed
algorithm has been designed, implemented and tested successfully.
The experimental results showed that selecting the best subband for
embedding from both transforms will improve the imperceptibility
and robustness of the new combined algorithm. The evaluated
imperceptibility of the combined DWTCT algorithm which gave a
PSNR value 88.11 and the combination DWTCT algorithm
improves robustness since it produced better robust against Gaussian
noise attack. In addition to that, the implemented system shored a
successful extraction method to extract watermark efficiently.
Open Science Index 78, 2013