关键词: 图象去噪, 非下采样Contourlet, 图正则化, 图论, 偏微分方程

Abstract: The nonsubsampled Contourlet transform was used to capture the features such as edge, contour and texture. After that, a weighting function was generated by using the features. Finally, graph regularization equation was used to filter the noisy image. The simulation results show that the proposed method can effectively remove the noise and is superior to other partial differential equation methods.

Key words: image processing, nonsubsampled contourlet transform, graph regularization, graph, partial differential equation