Precision analysis model and experimentation of vision reconstruction with two cameras and 3D orientation reference

Abstract

Active vision reconstruction is widely used in industrial manufacturing and three-dimensional inspection. The reconstruction accuracy is an important problem to be investigated for the inspection process. The paper conducts an analysis study of the reconstruction error for the vision reconstruction with a planar laser, two cameras and a 3D orientation board. The variation principles of the spatial coordinates caused by the variations of the extrinsic parameters of the cameras, intrinsic parameters of the internal camera, and image coordinate points of the internal camera, are modeled and analyzed in this paper. The analysis is also proved by the verification experiments, which provides the application potential for other active-vision-based reconstructions.

Industrial camera model positioned on an effector for automated tool center point calibration

“… Combinations and other methods Combination of a global laser and local scanning system 14 . Visual reconstruction using a planar laser, two cameras and 3D orientation board 15 . Planar-laser-guided solution with a unique reference point and sensor module mounted with a photoelectric position sensitive detector 16 .…”

“…al. 15 introduced visual reconstructions using a planar laser, two cameras and a 3D orientation board to verify the accuracy of an active vision system’s measurement fields and calibration. Other methods involve the use of visual-tactile sensors 17 or optical fibers 18 .…”