@article{(Open Science Index):https://publications.waset.org/pdf/13618, title = {Combined DWT-CT Blind Digital Image Watermarking Algorithm}, author = {Nidal F. Shilbayeh and Belal AbuHaija and Zainab N. Al-Qudsy}, country = {}, institution = {}, abstract = {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 sub-band for embedding from both transforms will improve the imperceptibility and robustness of the new combined algorithm. The evaluated imperceptibility of the combined DWT-CT algorithm which gave a PSNR value 88.11 and the combination DWT-CT 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.}, journal = {International Journal of Computer and Information Engineering}, volume = {7}, number = {6}, year = {2013}, pages = {736 - 742}, ee = {https://publications.waset.org/pdf/13618}, url = {https://publications.waset.org/vol/78}, bibsource = {https://publications.waset.org/}, issn = {eISSN: 1307-6892}, publisher = {World Academy of Science, Engineering and Technology}, index = {Open Science Index 78, 2013}, }