公开(公告)号：US20060227137A1

公开(公告)日：2006-10-12

申请号：US11092426

申请日：2005-03-29

申请人： Tim Weyrich ,  Wojciech Matusik ,  Hanspeter Pfister ,  Henrik Jensen ,  Wai Ngan ,  Markus Gross

发明人： Tim Weyrich ,  Wojciech Matusik ,  Hanspeter Pfister ,  Henrik Jensen ,  Wai Ngan ,  Markus Gross

IPC分类号： G06T15/50

CPC分类号： G06T15/50

摘要： A face is scanned to obtain a three-dimensional geometry of the face, images are also acquired of the face, and subsurface scattering of the face is measured. A translucency map is determined from the subsurface reflectance. A total surface reflectance and a normal map are estimated from the three-dimensional geometry and the images, and diffuse reflectance is estimated using the total reflectance. An albedo map is determined from the diffuse reflectance. The diffuse reflectance is subtracted from the total reflectance to obtain a surface reflectance. A set of bi-directional reflectance functions is fitted to the surface reflectance. Then, the set of bi-directional reflectance distribution functions, the albedo map, and the translucency map are combined to form a skin reflectance model of the face.

摘要翻译： 扫描面部以获得脸部的三维几何图像，并且还获取脸部的图像，并且测量脸部的表面下散射。 从地下反射率确定半透明度图。 从三维几何图像和图像估计总表面反射率和法线图，并且使用总反射率来估计漫反射。 从漫反射率确定反照率图。 从总反射率中减去漫反射，得到表面反射率。 一组双向反射函数适合表面反射率。 然后，将该组双向反射分布函数，反照率图和半透明度图组合，以形成面部的皮肤反射率模型。