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.
|Title of host publication||Emerging Digital Micromirror Device Based Systems and Applications IX|
|Editors||Michael R. Douglass, Benjamin L. Lee|
|Publication status||Published - 2017|
|Event||Emerging Digital Micromirror Device Based Systems and Applications IX - San Francisco, United States|
Duration: 2017 Jan 30 → 2017 Jan 31
|Name||Proceedings of SPIE - The International Society for Optical Engineering|
|Conference||Emerging Digital Micromirror Device Based Systems and Applications IX|
|Period||17/1/30 → 17/1/31|
Bibliographical noteFunding Information:
This study was sponsored by the National Science Foundation (NSF) under grant numbers: CMMI-1150711 and CMMI-1300376. The views expressed in this chapter are those of the authors and not necessarily those of the NSF.
© 2017 SPIE.
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Computer Science Applications
- Applied Mathematics
- Electrical and Electronic Engineering