Firstly

this paper has briefly introduced the images degenerated model

elements and image restoration method. Secondly

it has improved the local maximum entropy algorithm by applying the statistic property and the characteristics of different type image region. Experiment has proved that the algorithm has independence with degeneration model and the size of local image region. It can keep the image details as well as improve the balance of gray and the contrast of image. The algorithm has a small computing cost and flexibility.