Image processing method and image processing apparatus

Abstract

The present invention provides an image processing method and an image processing apparatus. The method includes the steps as follows: dividing photographs or sketch images to be processed into N first image blocks with a same size through a division rule, wherein, an image pair in a training set is pre-processed by adapting the division rule; determining a corresponding relation of each first image block and M categories, wherein, the image pair in the training set is pre-processed by the application of a clustering algorithm so as to acquire the M categories; acquiring a second image block corresponding to each first image block according to pre-trained training parameters corresponding to the category to which each first block is attributed; and finally synthesizing sketch images or photographs corresponding to the photographs or sketch images to be processed according to the acquired N second image blocks corresponding to the N first image blocks. The image processing method and apparatus realizes the mutual synthesizing of the photographs or sketch images through a dictionary learning method, avoids patches made by hands, and increases a sharpness of the synthesizing effect.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to an image processing method and device. Background technique [0002] The photo-sketch synthesis method refers to automatically generating its corresponding sketch image according to photo information, or automatically generating its corresponding photo image according to the sketch image. The traditional synthesis method is based on calculation. Taking the synthesis of sketch images based on face photos as an example, the specific description is as follows: first extract the face shape from the photo, and then enlarge some details through some specific rules, so that the generated picture is in the shape It is similar to sketching. However, this synthesis method makes it difficult to reflect the details of the face in the photo in the sketch image, and this synthesis method cannot realize the synthesis from the sketch to the photo. [0003] In the prior art, Liu ...

AI Technical Summary

Problems solved by technology

However, because this method is based on the search of similar blocks, it is prone to the problem that it is difficult to find similar blocks. In addition, artificial small blocks will also appear in the final synthesized image.

resulting in blurred images

Images