A face recognition device which operates in sunlit conditions such as in sunlight, or in indirect sunlight. The device operates without projection of light or other illumination to the face. Stereo information indicative of the face shape is obtained, and used to construct a 3D model. That model is compared...http://www.google.com.tw/patents/US20050111705?utm_source=gb-gplus-share專利 US20050111705 - Passive stereo sensing for 3D facial shape biometrics
