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Proceedings Paper

Self-calibrating phase shifting shadow moiré technique
Author(s): Hubing Du; Jianhong Yu; Shaofeng Zhang
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Paper Abstract

The phase shifting shadow moiré is an efficient technique for 3-D shape measurement. Our recent research focuses on improving its measurement accuracy without addition the complication of the experimental set-up. Considering that the existing measurement process of shifting shadow moiré technique is complex, we had been looking for ways to make it easier. In this paper we propose some effective techniques to fulfil the aim. In the proposed method, the binocular stereovision technique is used to calibrate the geometric parameters of our setup. Then a method is developed to determine the grating translation difference. After that an iterative self-tuning algorithm is use to retrieve the accurate phase. The proposed method is fast and can be implemented easily in many applications. Optical experiments are implemented to verify the feasibility of this method.

Paper Details

Date Published: 7 March 2019
PDF: 11 pages
Proc. SPIE 11053, Tenth International Symposium on Precision Engineering Measurements and Instrumentation, 110532H (7 March 2019); doi: 10.1117/12.2511924
Show Author Affiliations
Hubing Du, Xi'an Technological Univ. (China)
Jianhong Yu, Xi'an Technological Univ. (China)
Shaofeng Zhang, Xi'an Technological Univ. (China)

Published in SPIE Proceedings Vol. 11053:
Tenth International Symposium on Precision Engineering Measurements and Instrumentation
Jiubin Tan; Jie Lin, Editor(s)

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