关键词: 纹理映射, 调和映射, Delaunay三角化, ASM算法

Abstract: The research object of this paper is to map a face image（called the source image） to another face image（called the target image）, so as to realize the deformation of the face images and achieve some special effects. In the process, one of the most critical problems is to maintain the constrained mapping of organ features in two human faces. This paper puts forward a technical strategy, which can effectively achieve this object. Firstly, the feature points of the source face and the target face are detected with the face feature detection algorithm. Then, based on the feature points, the Delaunay triangulation method is used to transform the target face into a triangular mesh. After that, the corresponding coordinates of all grid points are calculated in the source face image by using harmonic mapping. After obtaining the texture coordinates of the mesh point, the mapping of the source face to the target face can be realized. Experimental results show that, the proposed method can realize the mapping between arbitrary faces, and the mapping relationships of facial features can be maintained very well.

Key words: texture mapping, harmonic mapping, Delaunay triangulation, ASM algorithm