Three-dimensional visual sensor

Details Three-dimensional visual sensor Three-dimensional visual sensor

2007-04-10

2007-04-10

Pham, Hoa Q. (Department: 2877)

Optics: measuring and testing

Shape or surface configuration

Triangulation

C356S622000

Reexamination Certificate

active

11037330

ABSTRACT:
A three-dimensional visual sensor is disclosed. A two-dimensional image of a two-dimensional feature portion including a point determined on a work is acquired, and N points are determined. A slit of light is projected by a projector, an image of a projected portion is obtained, and M points are determined. The three-dimensional position of the intersection point between each straight line connecting the N points and a point in a camera and the slit of light plane is determined on the sensor coordinate system, and transformed to the data on the reference coordinate system. The three-dimensional positions of M points are similarly subjected to coordinate transform to the data on the reference coordinate system. Straight lines defined by the M and N points are determined. The intersection point between the two straight lines is determined and returned to the data on the sensor coordinate system by inverse transform.

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