Image face changing method based on local occlusion condition

The invention provides an image face changing method based on a local occlusion condition. An input face image and a target face image are described by two-dimensional feature points, related face areas are divided on the input image and the target image. A pixel feature function corresponding to the face areas is established, and seamless fusion is performed in the face area migration process toeliminate splicing boundaries. A final output image is synethisized through Laplacian pyramid reconstruction by using an idea of image layered superposition. The finally synthesized image has no obvious modification splicing trace. Compared with a Poisson fusion method commonly used for image face changing at present, image effect of an edge of the shielding object is well restored, especially when the shielding object has projection shadows in the face area, the details of the edge area of the shielding object are obviously different from those of a Poisson fusion method, and the image effectof the whole image after