Optical triangulation and its applications in body measurement

Optical triangulation is a basic profilometry based on the collinear equation by using the triangular relationship between the object,light source and a camera to get the direct solution geometrically.This paper reviewed the domestic anthropometric studies,and pointed out the importance of the principle research to the relative exploration.According to the classification of optical profilometry,and following the collinear equation,the faults of simple photogrammetry in body measurement were pointed out,and the principles of the passive triangular method,the laser sectioning,and Gray code grating method of active triangulation were described mathematically.The features of each method on body scanning were summed up and the misunderstandings about infrared body scanning were also discussed.