Stereo imaging system for dimensional measurement

Robert C. Chang

doi:10.1117/12.263333

20 January 1997 Stereo imaging system for dimensional measurement

Robert C. Chang

Proceedings Volume 2909, Three-Dimensional Imaging and Laser-Based Systems for Metrology and Inspection II; (1997) https://doi.org/10.1117/12.263333
Event: Photonics East '96, 1996, Boston, MA, United States

Abstract

3D surface geometry is a critical parameters in a part assembly process. The general technique of stereo imaging can provide non-contacting dimensional measurement by triangulation to determine coordinates of selected points on an object, from which dimensional information can be derived. A laboratory stereo imaging system employing tow CCD cameras has been developed to achieve accurate, high precision dimensional measurement. This system allows flexible camera placement and easy calibration. It resolved the stereo correlation problem by utilizing a laser scanner to mark measurement points with high-intensity, small- diameter light spots. This system can be implemented in- process for a variety of surface geometry inspections under rugged manufacturing conditions.

Citation Download Citation

Robert C. Chang "Stereo imaging system for dimensional measurement", Proc. SPIE 2909, Three-Dimensional Imaging and Laser-Based Systems for Metrology and Inspection II, (20 January 1997); https://doi.org/10.1117/12.263333

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