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Proceedings Paper

Projected fringe profilometry using a hologram for objects with large depth discontinuities
Author(s): Wei-Hung Su; Wei-Jen Chen; Jun-Shan Huang; Cho-Yo Kuo
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Paper Abstract

In this paper, we provide a technique using a hologram as a diffractive element for finding the absolute shape of an object with large depth discontinuities. The proposed method offers following major advantages: (1) a large depth-of-field in the projection system, (2) very low fringe distortion (even for a large field of view), (3) only one phase measurement needed for operation, (4) easiness for calibration, (5) robust performance to analyze surfaces with lots of discontinuities, especially for automatic phase unwrapping, and (6) a very compact design for the measurement system. The single-shot property also makes it possible for measurements of dynamic objects with large depth discontinuities.

Paper Details

Date Published: 24 August 2006
PDF: 12 pages
Proc. SPIE 6314, Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications XII, 63140P (24 August 2006); doi: 10.1117/12.679529
Show Author Affiliations
Wei-Hung Su, National Sun Yat-Sen Univ. (Taiwan)
Wei-Jen Chen, National Sun Yat-Sen Univ. (Taiwan)
Jun-Shan Huang, National Sun Yat-Sen Univ. (Taiwan)
Cho-Yo Kuo, National Sun Yat-Sen Univ. (Taiwan)


Published in SPIE Proceedings Vol. 6314:
Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications XII
Francis T. S. Yu; Ruyan Guo; Shizhuo S. Yin, Editor(s)

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