1. An image processing method, comprising: selecting at least one image from a plurality of images, and storing the plurality of images into a buffer, until a storage space of the buffer reaching a criterion; and when the buffer reaching the criterion, a procedure of video processing being performed for a plurality of temporary images in the buffer, which including constructing an image dictionary according to the at least one image selected, and performing an image recovery and reconstruction procedure for the plurality of temporary images in the buffer according to the image dictionary, thereby obtaining a plurality of reconstructed images.