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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 47, Iss. 3 — Jan. 20, 2008
  • pp: 377–385

Flexible three-dimensional measurement technique based on a digital light processing projector

Feipeng Da and Shaoyan Gai  »View Author Affiliations


Applied Optics, Vol. 47, Issue 3, pp. 377-385 (2008)
http://dx.doi.org/10.1364/AO.47.000377


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Abstract

A new method of 3D measurement based on a digital light processing (DLP) projector is presented. The projection model of the DLP projector is analyzed, and the relationship between the fringe patterns of the DLP and the fringe strips projected into the 3D space is proposed. Then the 3D shape of the object can be obtained by this relationship. Meanwhile a calibration method for this model is presented. Using this calibration method, parameters of the model can be obtained by a calibration plate, and there is no requirement for the plate to move precisely. This new 3D shape measurement method does not require any restrictions as that in the classical methods. The camera and projector can be put in an arbitrary position, and it is unnecessary to arrange the system layout in parallel, vertical, or other stringent geometry conditions. The experiments show that this method is flexible and is easy to carry out. The system calibration can be finished quickly, and the system is applicable to many shape measurement tasks.

© 2008 Optical Society of America

OCIS Codes
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology
(120.2650) Instrumentation, measurement, and metrology : Fringe analysis
(120.2830) Instrumentation, measurement, and metrology : Height measurements
(150.0150) Machine vision : Machine vision
(150.6910) Machine vision : Three-dimensional sensing

ToC Category:
Instrumentation, Measurement, and Metrology

History
Original Manuscript: June 1, 2007
Revised Manuscript: November 6, 2007
Manuscript Accepted: November 13, 2007
Published: January 17, 2008

Citation
Feipeng Da and Shaoyan Gai, "Flexible three-dimensional measurement technique based on a digital light processing projector," Appl. Opt. 47, 377-385 (2008)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-47-3-377

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