High-speed 3D surface measurement with mechanical projector

Jae Sang Hyun, Song Zhang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)


This paper presents a method to overcome the light spectral range limitation of using digital-light-processing (DLP) projector for 3D shape measurement by developing a mechanical projector. The mechanical projector enables much broader spectral range of light than that the DLP projector allows. The rapidly spinning disk with binary structures can generate desired sinusoidal patterns at a frequency of 10 kHz or higher with a single DC motor. By precisely synchronizing the camera with the projector, phase-shifted fringe patterns can be accurately captured for high-accuracy 3D shape measurement. We further employed a computational framework that could enable absolute phase and thus absolute 3D shape measurement. We developed such prototype system that experimentally demonstrated the success of the proposed method.

Original languageEnglish
Title of host publicationDimensional Optical Metrology and Inspection for Practical Applications VI
EditorsSong Zhang, Kevin G. Harding
ISBN (Electronic)9781510609419
Publication statusPublished - 2017
EventDimensional Optical Metrology and Inspection for Practical Applications VI 2017 - Anaheim, United States
Duration: 2017 Apr 13 → …

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


ConferenceDimensional Optical Metrology and Inspection for Practical Applications VI 2017
Country/TerritoryUnited States
Period17/4/13 → …

Bibliographical note

Publisher Copyright:
© 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


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