Calibration of a CCD camera on a hybrid coordinate measuring machine for industrial metrology

Elisabetta Bruzzone; Fulvia Mangili

doi:10.1117/12.48240

1 September 1991 Calibration of a CCD camera on a hybrid coordinate measuring machine for industrial metrology

Elisabetta Bruzzone, Fulvia Mangili

Proceedings Volume 1526, Industrial Vision Metrology; (1991) https://doi.org/10.1117/12.48240
Event: Industrial Vision Metrology, 1991, Winnipeg, Canada

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.

Citation Download Citation

Elisabetta Bruzzone and Fulvia Mangili "Calibration of a CCD camera on a hybrid coordinate measuring machine for industrial metrology", Proc. SPIE 1526, Industrial Vision Metrology, (1 September 1991); https://doi.org/10.1117/12.48240

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