抄録
Single shot three-dimensional shape measurement system using multiple slits with random dots is introduced. In general slit-ray projection method, a laser slit is swept on the surface of an object. While the laser slit is being swept, the object and the position of the measurement apparatus should to be stationary. So, this sweeping prevents the handheld measurement. In order to cope with this problem, three-dimensional measurement system has been developed to acquire instantaneous shape without sweeping the laser slit on the object. Multiple laser slits are projected on the object and many line segments of laser slits appear in a single image. In order to calculate the three-dimensional position using triangulation geometry, each line segment has to be identified to know the direction of the laser projection. In this paper, the robust identification method is introduced. Random dots projected along the slit are utilized to identify each line segment. Some points on the line segment are randomly sampled and template images surrounding the sampled points are set. The line segment is identified by using the pattern of the random dots in the template. Experimental results show the feasibility of our method.
