Method for scalely removing motion blur of single image

The invention provides a method for hierarchically removing motion blur of a single image. According to the method provided in the invention, a blur kernel of a target image is calculated; the target image and the blur kernel are expressed by expression formulas of multiple scales; and then gradient attenuation function and strong edge inhibition function are applied to a residual Richardson-Lucyalgorithm, and residual images of the target image and the blur kernel are calculated respectively in a recursive manner from a crudest scale to a finest scale, wherein the residual images are expressed by an expression formula of each scale; meanwhile, the residual images of the target image and the blur kernel are restored to a first restored image and a second restored image; at last, the difference of the two restored images are compared to obtain a restored image, wherein the motion blur of the restored image has been removed.