Modeling and calibration of grid structured light based 3-D vision inspection

The principle of structured light 3-D vision is introduced, and using proje ctive and per spective transformations, the mathematical model of grid stru ctured light based 3-D vision inspection is established in homogeneous coor dinate system in this paper. Based on the image feature analysis of grid st ructured light, a calibration method of grid structured light based 3-D vis ion inspection is proposed, and experimental results are also presented. Th is method is easy, efficient and fast to carry our, it simplifies the calib ration process while guaranteeing its accuracy. [S1087-1357(00)00703-6].