Patent ID: 8351025
Filing Date: 2013-01-08
Classification: G01C

Abstract:
1. A three-dimensional-shape measurement apparatus comprising: a light-emitting unit emitting a pulse-laser beam towards a to-be-measured object provided with a target set in the to-be-measured object and used for acquiring a reference value of point-cloud data, the target including a first drive unit scanning the to-be-measured object in a horizontal direction; a second drive unit scanning the to-be-measured object in a vertical direction; a controller calculating the coordinates of the center of the target and thus the distance between the three-dimensional-shape measurement apparatus and the target by the scanning in the horizontal and vertical directions, calculating the three-dimensional coordinates of the center of the target, and carrying out processing of combining point-cloud data acquired by scanning the to-be-measured object on the basis of the calculated three-dimensional coordinates of the center position of the target; and an image light-receiving unit taking an image of the to-be-measured object, wherein the controller carries out: wherein a plurality of targets to be used having different sizes are prepared in accordance with the distance between three-dimensional-shape measurement apparatus and the to-be-measured object.