Self-Calibration of a Moving Camera from PointCorrespondences and Fundamental Matrices
International Journal of Computer Vision
Computer Vision: Three-Dimensional Data from Images
Computer Vision: Three-Dimensional Data from Images
Calibration-Free Augmented Reality
IEEE Transactions on Visualization and Computer Graphics
A new method of camera pose estimation using 2D-3D corner correspondence
Pattern Recognition Letters
Virtual reality and mixed reality for virtual learning environments
Computers and Graphics
Review: Virtual machine tools and virtual machining-A technological review
Robotics and Computer-Integrated Manufacturing
A study on automatic on-machine inspection system for 3D modeling and measurement of cutting tools
Journal of Intelligent Manufacturing
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In computerized numerical control (CNC) machine tools, it is often a time-consuming and error-prone process to verify the Euclidean position accordance between the actual machining setup and its designed three-dimensional (3D) digital model. The model mainly contains the work piece and jigs. The mismatch between them will cause a failure of simulation to precisely detect the collision. The paper presents an on-machine 3D vision system to quickly verify the similarity between the actual setup and its digital model by real and virtual image processing. In this paper, the system is proposed first. Afterwards, a simple on-machine camera calibration process is presented. This calibration process determines all the camera's parameters with respect to the machine tool's coordinate frame. The accurate camera mathematical model (or virtual camera) is derived according to the actual imaging projection. Both camera-captured real images and system-generated virtual images are compensated to make them theoretically and practically identical. The mathematical equations have been derived. Using the virtual image as a reference and then superimposing the real image onto it, the operator can intuitively verify the Euclidean position in accordance to the actual setup and its 3D digital model.