The present disclosure provides a technical solution related to processing images in image transformation by fusion. More particularly, an image of an object of an original picture may be transferred onto an image of a corresponding object in a template picture by fusion. During the transformation by fusion, the processing of fusion may be done on each pixel by using a pixel weight graph, so that the image of the object in the original picture may be better integrated into the template picture with the features of the object in the original picture maintained well in the picture processed by fusion.