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Proceedings Paper

High-speed 3D imaging using digital binary defocusing method vs sinusoidal method
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Paper Abstract

This paper presents our research findings on high-speed 3D imaging using digital light processing (DLP) technologies. In particular, we compare two different sinusoidal fringe generation techniques using the DLP projection devices: direct projection of 8-bit computer generated sinusoidal patterns (a.k.a, the sinusoidal method), and the creation of sinusoidal patterns by defocusing binary patterns (a.k.a., the binary defocusing method). This paper mainly examines their performance on high-accuracy measurement applications under precisely controlled settings. Two different projection systems were tested in this study: the commercially available inexpensive projector, and the DLP development kit. Experimental results demonstrated that the binary defocusing method always outperforms the sinusoidal method if a sufficient number of phase-shifted fringe patterns can be used.

Paper Details

Date Published: 20 February 2017
PDF: 10 pages
Proc. SPIE 10117, Emerging Digital Micromirror Device Based Systems and Applications IX, 1011707 (20 February 2017); doi: 10.1117/12.2250698
Show Author Affiliations
Song Zhang, Purdue Univ. (United States)
Jae-Sang Hyun, Purdue Univ. (United States)
Beiwen Li, Purdue Univ. (United States)

Published in SPIE Proceedings Vol. 10117:
Emerging Digital Micromirror Device Based Systems and Applications IX
Michael R. Douglass; Benjamin L. Lee, Editor(s)

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