Harmony method and harmony model of composite image

The invention relates to the technical field of image processing, and particularly discloses a harmony method and a harmony model of a composite image. The method comprises the steps of: constructin an intrinsic image decomposition framework based on an automatic encoder, and decomposing the composite image into a reflectivity intrinsic image and an illumination intrinsic image to realize further separable intrinsic image harmony; then, harmonizing a reflectivity intrinsic image by utilizing material consistency punishment on the premise of keeping scene content unchanged, and then, by taking learned background light as a reference, adjusting illumination of a foreground through an illumination strategy so as to enable the foreground to be compatible with a background, and realizing harmony of an illumination intrinsic image; then, performing modeling on the relation between the foreground image block and the background image block of the synthesized image, and guiding harmony of the intrinsic image; and fina