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Proceedings Paper

Triangulation-Based Camera Calibration For Machine Vision Systems
Author(s): R. A. Bachnak; M. Celenk
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Paper Abstract

This paper describes a camera calibration procedure for stereo-based machine vision systems. The method is based on geometric triangulation using only a single image of three distinctive points. Both the intrinsic and extrinsic parameters of the system are determined. The procedure is performed only once at the initial set-up using a simple camera model. The effective focal length is extended in such a way that a linear transformation exists between the camera image plane and the output digital image. Only three world points are needed to find the extended focal length and the transformation matrix elements that relates the camera position and orientation to a real world coordinate system. The parameters of the system are computed by solving a set of linear equations. Experimental results show that the method, when used in a stereo system developed in this research, produces reasonably accurate 3-D measurements.

Paper Details

Date Published: 1 April 1990
PDF: 12 pages
Proc. SPIE 1194, Optics, Illumination, and Image Sensing for Machine Vision IV, (1 April 1990); doi: 10.1117/12.969851
Show Author Affiliations
R. A. Bachnak, Ohio University (United States)
M. Celenk, Ohio University (United States)

Published in SPIE Proceedings Vol. 1194:
Optics, Illumination, and Image Sensing for Machine Vision IV
Donald J. Svetkoff, Editor(s)

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