The goal of this project is to reconstruct the 3d geometry of a static object. Given a automated
sliding mechanism that emits a plane of laser light, the idea is to sweep the plane of light across the surface of the object and view the prole of the object contour using an of axis CCD camera mounted near the laser. The resulting camera images can be used to compute the 3d coordinates of points on the object surface via triangulation. The three main components of the 3d geometry recovery system are the camera image interpretation, mesh generation and visualization software.
The hardware consists of a laser head and a web cam mounted together, sliding on a vertical rail with the help of a stepper motor. The laser light is projected out into the scanner environment and a profile stripe is seen by the camera which is equipped with a filter that permits only light of roughly the same frequency as the laser.
The hardware is operated by a application written in vb 6 . The application sends signals to the
scanner to move the camera up/down 3mm and acquire a image. This is demonstrated in the accompanied
movie.
