Patent ID: 9007602
Filing Date: 2015-04-14
Classification: G01B

Abstract:
1. A three-dimensional measurement apparatus, comprising: a projection unit configured to project a plurality of stripe patterns on an object, each stripe pattern including bright and dark areas alternately disposed at a different cycle from one stripe pattern to another; an imaging unit configured to capture a plurality of stripe pattern reflected lights reflected from the object on which the plurality of stripe patterns is projected by the projection unit; a calculation unit configured to calculate reliability for the plurality of stripe pattern reflected lights; and an acquisition unit configured to acquire distance information of the object from the plurality of stripe pattern reflected lights captured by the imaging unit, wherein, when the calculated reliability is less than a threshold value for any of the reflected lights in the plurality of stripe pattern reflected lights, the projection unit is configured to project a shifted stripe pattern on the object, the shifted stripe pattern is generated by shifting by a predetermined cycle a stripe pattern corresponding to a reflected light whose reliability calculated by the calculation unit is equal to or greater than the threshold value, wherein the imaging unit is configured to capture reflected light of each shifted stripe pattern projected on the object, and wherein the acquisition unit is configured to acquire distance information of the object based on the captured reflected light that corresponds to the shifted stripe pattern.