Patent ID: 7502504
Filing Date: 2009-03-10
Classification: G01B,G06T

Abstract:
1. A three-dimensional visual sensor for obtaining three-dimensional information on an objective workpiece based on an image of the objective workpiece captured by projecting a reference beam onto the objective workpiece, comprising: means for detecting a two-dimensional image of a reference workpiece of a same type as the objective workpiece; means for storing, as reference information, information about a surface of a first region including a characteristic part of the objective workpiece and a surface of a second region as a target region of three-dimensional measurement of the objective workpiece, said information about the first and second regions being obtained from the detected two-dimensional image of the reference workpiece of the same type as the objective workpiece, which is captured from a predetermined position; means for capturing an image of the objective workpiece and determining a region corresponding to said first region in the image of the objective workpiece; means for determining another region in the image of the objective workpiece corresponding to said second region based on information on a position of the region determined as corresponding to said first region and said reference information stored in said storage means; and means for obtaining three-dimensional information on the objective workpiece in the another region.