Share Email Print
cover

Proceedings Paper

Three-coordinate measuring system with structured light
Author(s): Joerg Gerber; Peter Kuehmstedt; Richard M. Kowarschik; Gunther Notni; Wolfgang Schreiber
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

The measurement of three-dimensional object shapes plays an important role in machine vision, solid modeling and other industrial applications. Well known optical methods for 3D- shape inspection are moire-techniques and contouring. Unfortunately, as a rule they are lacking because they measure only one coordinate, i.e., the height above a reference surface. The other coordinates in the reference plane have to be determined using the pixel distance of the observing CCD-camera or by other means. Here, we demonstrate a real 3D-coordinate measuring system using fringe projection techniques where the scale of coordinates is given by the illumination-structures. This method has the advantage that the aberration of the observing system and the depth-dependent imaging scale have no influence on the measuring accuracy. Moreover, the measurements are independent of the position of the camera with respect to the object under test.

Paper Details

Date Published: 30 November 1994
PDF: 9 pages
Proc. SPIE 2342, Interferometry '94: Photomechanics, (30 November 1994); doi: 10.1117/12.195521
Show Author Affiliations
Joerg Gerber, Fraunhofer Institution for Applied Optics and Precision Engineering (Germany)
Peter Kuehmstedt, Fraunhofer Institution for Applied Optics and Precision Engineering (Germany)
Richard M. Kowarschik, Fraunhofer Institution for Applied Optics and Precision Engineering (Germany)
Gunther Notni, Fraunhofer Institution for Applied Optics and Precision Engineering (Germany)
Wolfgang Schreiber, Fraunhofer Institution for Applied Optics and Precision Engineering (Germany)


Published in SPIE Proceedings Vol. 2342:
Interferometry '94: Photomechanics
Ryszard J. Pryputniewicz; Jacek Stupnicki, Editor(s)

© SPIE. Terms of Use
Back to Top