关键词: 数字图像, 去模糊, 正则化, Abdou算子, 共轭梯度法

Abstract: During digital image deblurring，the local information of the image is incorporated into regularization to adaptively adjust the the regularization parameter for better preserve the edge and texture of the image and suppress ringing effects.This paper calculates the gradient amplitude of each pixels by introducing Abdou operator，constructing the weighting matrix s in the spatial domain with the consideration of human visual system.And the final step is to solve the problem by the method of conjugate gradient.Compared with the method proposed by Lagendijk which is based on local variance，the method based on Abdou operator is feasible and quite simple with good results.

Key words: digtital image, deblurring, regularization, Abdou operator, CG method