1. An image processing method, comprising: obtaining all image characteristics contained in each of N captured images and determining at least one image characteristic from the all image characteristics; searching the N images for at least three images each containing the at least one image characteristic based on the at least one image characteristic; determining a reference image from the at least three images and obtaining image residue information characterizing an image difference parameter between the reference image and each of the remaining at least two images; and applying data compression to the reference image and the image residue information to obtain a data compressed image data package having a data volume smaller than a data volume that would be obtained if the at least three images were compressed directly; wherein said determining the reference image from the at least three images comprises: determining image residue information between each of the at least three images and the other image of the at least three images; and determining from data volume corresponding to the image residue information an image corresponding to the image residue information having the smallest data volume as the reference image.