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Proceedings Paper

Calibration of a 3D surface contouring and ranging system
Author(s): Qingying Hu; Peisen S. Huang; Qionglin Fu; Fu-Pen Chiang
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Paper Abstract

A new 3D surface contouring and ranging system based on a digital fringe projection and phase shifting technique is described. In this system, three phase-shifted fringe patterns and a centerline pattern are used to determine the absolute phase map of the object. This phase map is then converted to the absolute x, y, and z coordinates of the object surface by a transformation algorithm. To determine the accurate values of the system parameters as required by the transformation algorithm, a two-step calibration procedure was developed. First the parameters were indirectly measured through experiments to determine their approximate values. Second, a calibration plate whose features were calibrated by a coordinate measuring machine was measured by the system at various positions. An iteration algorithm was then used to estimate the system parameters. Measurements of the calibration plate, a sheet- metal panel, and a Ford master gauge showed results consistent with the actual surface contours of the objects.

Paper Details

Date Published: 16 November 1999
PDF: 9 pages
Proc. SPIE 3835, Three-Dimensional Imaging, Optical Metrology, and Inspection V, (16 November 1999); doi: 10.1117/12.370256
Show Author Affiliations
Qingying Hu, SUNY/Stony Brook (United States)
Peisen S. Huang, SUNY/Stony Brook (United States)
Qionglin Fu, SUNY/Stony Brook (United States)
Fu-Pen Chiang, SUNY/Stony Brook (United States)

Published in SPIE Proceedings Vol. 3835:
Three-Dimensional Imaging, Optical Metrology, and Inspection V
Kevin G. Harding, Editor(s)

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