Face Replacement based on Surface Morphing and Color Optimization

• Main Authors: Wu, Chien-Chou, 吳建周
• Other Authors: Lin, Wen-Wei
• Format: Others
• Language: en_US
• Published: 2019
• Online Access: http://ndltd.ncl.edu.tw/handle/at5m8q

碩士 === 國立交通大學 === 應用數學系所 === 107 === In this thesis, we will discuss how to project 3D face point clouds into 2D space and conform to a mapping of an affine transformation. In simple terms, an affine transformation is a composite function of linear transformation plus translation. In addition, the most important issue in computer vision is the facial deformation. In this thesis, we will also explore the application of deformation and combine it with affine transformation. While projecting the point clouds, at the same time make a continuous expression of the face. Due to the position of the camera, the lighting conditions at the time and the overall environmental sensation, etc., the source image and the target image will have color differences, and we have also made a corresponding color adjustment for such a problem. When finally adjust the color, we will find that we can still see the obvious color lines (color difference) at the boundary of the face. Hence by using image blending, we can make it fade to achieve a better visual effect. In the process, due to the fact that the detection landmarks method is unstable sometimes, the boundary of the face may be bounced sometime. Here we use the cubic spline interpolation method to make the face more stable.