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Proceedings Paper

A least squares calibration method for fringe projection profilometry
Author(s): Hongwei Guo; Haitao He; Yingjie Yu; Mingyi Chen
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Paper Abstract

This paper presents a novel least squares calibration approach for fringe projection profilometry. This approach is based on a simple nonlinear function, which is deduced by analyzing the geometry of measurement system and perfectly describes the mapping relationship between the depth map and phase distribution. The calibration is implemented by translating a target plane to a sequence of given positions with known depths, and measuring its phase distributions. Based on least squares estimation, an algorithm with linear computation is deduced to retrieve the related parameters, by which the burden of computational complexity is effectively alleviated. In experiment, a plaster statue is measured to demonstrate the validity of the principle.

Paper Details

Date Published: 2 August 2004
PDF: 12 pages
Proc. SPIE 5531, Interferometry XII: Techniques and Analysis, (2 August 2004);
Show Author Affiliations
Hongwei Guo, Shanghai Univ. (China)
Haitao He, Shanghai Univ. (China)
Yingjie Yu, Shanghai Univ. (China)
Mingyi Chen, Shanghai Univ. (China)

Published in SPIE Proceedings Vol. 5531:
Interferometry XII: Techniques and Analysis
Katherine Creath; Joanna Schmit, Editor(s)

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