LASER VIDEOGRAMMETRY

摘要

Systems and methods for measuring a surface of an object. The system, in one embodiment, includes a laser projector device mounted at a fixed location relative to an object being formed by a fabrication process, and a videogrammetry device mounted at another fixed location relative to the object. The laser projector device includes a laser element mounted on a two-axis gimbal assembly, and the gimbal assembly directs laser beams from the laser element onto target points on a surface of the object. The laser projector device measures angles of the laser beams to the target points, while the videogrammetry device simultaneously performs measurements of the target points by capturing video images of the laser beams reflecting off of the target points. A controller processes the measurements from the laser projector device and the videogrammetry device to calculate x, y, z coordinates of the target points in a 3D coordinate system.

主权项

1. An apparatus comprising:
a laser projector device mounted at a first fixed location relative to an object being formed by a fabrication process, wherein the laser projector device includes a laser element mounted on a two-axis gimbal assembly; a videogrammetry device mounted at a second fixed location relative to the object; and a controller; wherein the laser projector device is configured to control the two-axis gimbal assembly to direct laser beams from the laser element onto target points on a surface of the object, and to measure angles of the laser beams from the laser element to the target points; wherein the videogrammetry device is configured to simultaneously perform measurements of the target points by capturing video images of the laser beams reflecting off of the target points; wherein the controller is configured to process the measurements from the laser projector device and the videogrammetry device to calculate x, y, z coordinates of the target points in a three-dimensional (3D) coordinate system.