A method for extracting three-dimensional information using cone-shaped beams of light. - Kai-Hua Feng; Kokichi Sugihara; Noboru Sugie (Syst. Comput. Jpn., 1986)

Measurement of three-dimensional objects by pattern projection and camera advance. - Kai-Hua Feng; Kokichi Sugihara; Noboru Sugie (Adv. Robotics, 1989)