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Proceedings Paper

Absolute phase retrieval for 3D shape measurement by Fourier transform method
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Paper Abstract

Accurate 3D shape measurement via fringe analysis methods requires the determination of the absolute phase map of the object. In this paper, we present a novel method for absolute phase retrieval developed for use with the Fourier transform method for fringe analysis. A cross-shaped marker is embedded in the fringe pattern that is projected to the object. The position of the marker in the captured fringe image is detected and later used in calculating the absolute phase map. For phase analysis of the fringe image, the marker is removed and the sinusoidal intensity distribution of the fringe pattern is restored before the Fourier transform method is applied. This paper focuses on the concept of absolute phase retrieval from a single fringe pattern as well as techniques on marker detection and removal. Experimental results on absolute phase retrieval and 3D reconstruction are also presented to show the feasibility of the proposed method.

Paper Details

Date Published: 26 September 2007
PDF: 10 pages
Proc. SPIE 6762, Two- and Three-Dimensional Methods for Inspection and Metrology V, 676204 (26 September 2007); doi: 10.1117/12.747627
Show Author Affiliations
Hong Guo, Stony Brook Univ. (United States)
Peisen S. Huang, Stony Brook Univ. (United States)

Published in SPIE Proceedings Vol. 6762:
Two- and Three-Dimensional Methods for Inspection and Metrology V
Peisen S. Huang, Editor(s)

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