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Proceedings Paper

Calibration of a CCD camera on a hybrid coordinate measuring machine for industrial metrology
Author(s): Elisabetta Bruzzone; Fulvia Mangili
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Paper Abstract

A methodology for the calibration of a CCD low-cost camera mounted on a CMM machine is described. Several kinds of geometric distortion are taken into account in the camera model. Five distortion parameters are introduced modeling both radial and non-radial effects. A two- phase methodology is developed for the parameter estimation. In the first phase, a closed-form solution is reached for the intrinsic and the extrinsic parameters neglecting distortion effects. In the second phase, an iterative procedure estimates separately the distortion and the non- distortion parameters, to avoid harmful interactions. The main novelty of the solution is the use of only linear systems, avoiding any non-linear optimization process. Low-level image processing used for calibration images is described. Experimental results and comparisons with more simplified camera models and estimation strategies are presented.

Paper Details

Date Published: 1 September 1991
PDF: 17 pages
Proc. SPIE 1526, Industrial Vision Metrology, (1 September 1991); doi: 10.1117/12.48240
Show Author Affiliations
Elisabetta Bruzzone, ELSAG SpA (Italy)
Fulvia Mangili, ELSAG SpA (Italy)

Published in SPIE Proceedings Vol. 1526:
Industrial Vision Metrology
Sabry F. El-Hakim, Editor(s)

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