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Proceedings Paper

Reconstruct three-dimensional image by two- wavelength digital holographic contouring
Author(s): Qing Tian; Hui Wang; Hongzhen Jin; Yong Li
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Paper Abstract

The reconstruction of digital hologram is a key topic in the research of digital holography, which is maturely developed for the reconstruction of two-dimensional image. Recently, the reconstruction of three-dimensional image has attracted much more attention. In this paper, we apply the two-wavelength digital holographic contouring method to obtain the three-dimensional image, the basic idea of which is to reconstruct the shape through the phase difference that can be numerically calculated by Fresnel diffraction algorithm. Considering the fact that the obtained phase is wrapped on the interval (-π, π], and the unwrap algorithm always fails for the object with large height steps or spatially isolated areas, we adopt the two-wavelength digital holography to provide an equivalent longer wavelength such that the obtained phase is continuous everywhere. The experiment results prove the feasibility and efficiency of the method.

Paper Details

Date Published: 15 January 2008
PDF: 8 pages
Proc. SPIE 6832, Holography and Diffractive Optics III, 68321R (15 January 2008); doi: 10.1117/12.755080
Show Author Affiliations
Qing Tian, Zhejiang Normal Univ. (China)
Hui Wang, Zhejiang Normal Univ. (China)
Hongzhen Jin, Zhejiang Normal Univ. (China)
Yong Li, Zhejiang Normal Univ. (China)

Published in SPIE Proceedings Vol. 6832:
Holography and Diffractive Optics III
Yunlong Sheng; Dahsiung Hsu; Chongxiu Yu, Editor(s)

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