High-speed high-Accuracy three-dimensional shape measurement using digital binary defocusing method versus sinusoidal method

Jae Sang Hyun, Beiwen Li, Song Zhang

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)

Abstract

This paper presents our research findings on high-speed high-Accuracy three-dimensional shape measurement using digital light processing (DLP) technologies. In particular, we compare two different sinusoidal fringe generation techniques using the DLP projection devices: direct projection of computer-generated 8-bit 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: A 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.

Original languageEnglish
Article number074102
JournalOptical Engineering
Volume56
Issue number7
DOIs
Publication statusPublished - 2017 Jul 1

Bibliographical note

Funding Information:
This study was sponsored by the National Science Foundation (NSF) under grant numbers: CMMI-1531048 and CMMI-1523048

Publisher Copyright:
© 2017 Society of Photo-Optical Instrumentation Engineers (SPIE).

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Engineering(all)

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