A hybrid watermarking scheme using Contourlet transform and fuzzy logic

In this paper, we develop a hybrid watermarking scheme using fuzzy logic to obtain optimal parameters based on Contourlet transform domain. Depending on type of application; the results will be affected if these parameters don´t match with its requirements. In order to getting a flexible operation and discovering knowledge´s experts, we use linguistic variables, fuzzy logic. We deploy the fuzzy logic control system that defines fuzzy parameters for each application. Our approach improves the performance of the watermarking technique by comparing to other techniques and showing in experimental results.