1. A method for generating an image filter, comprising: receiving a first image that is selected with a specific imaging effect desired for the image filter; generating a group of images corresponding to the first image, wherein the group of images comprises at least a second image of a common structure characteristic with the first image and without the specific imaging effect; calculating a mapping relationship for transforming the group of images to the first image; and storing the mapping relationship to be used as the image filter to generate the specific imaging effect on other images.