Uncertainty Estimation for the Optical System of Optical Measuring Machines

Abstract:

This paper presents the problem of optical measuring machine calibration, emphasizing the calibration of the "optical system", omitting the calibration of the "machine system". The calibration of an optical measuring machine is the first step before using the instrument for any application. For this purpose, a mathematical model has been developed to transform the coordinates of a point in space (3D) into coordinates of a point in an image (2D). Using this camera model, a calibration procedure has been developed using a grid distortion pattern. Finally, a procedure for calculating the uncertainty of the camera and geometric distortion parameters based on the Monte Carlo method has been developed.

• Periodical: Key Engineering Materials (Volume 615)
• Pages: 95-101
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.615.95
• Online since: June 2014
• Authors: Jesús Caja García*, Emilio Gómez García, Piera Maresca, Miguel Berzal Rubio
• Keywords: Dimensional Metrology, Monte Carlo Method, Optical Measuring Machine, Uncertainty Calculus

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