Image enhancement based on adaptive and fuzzy complex contourlet transform

An image enhancement method based on adaptive and fuzzy complex contourlet transform is presented in this paper. Firstly, an image is decomposed by complex contourlet transform. Then adaptive nonlinear enhancement and fuzzy enhancement are applied to high-frequency and low-frequency coefficients, respectively. Finally the image is synthesized. The experimental results are given. It is shown that the proposed image enhancement method can obtain superior results, which can remove noise and highlight the original edges and textural features more effectively.