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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 50, Iss. 23 — Aug. 10, 2011
  • pp: 4557–4565

3D shape measurement of objects with high dynamic range of surface reflectivity

Gui-hua Liu, Xian-Yong Liu, and Quan-Yuan Feng  »View Author Affiliations


Applied Optics, Vol. 50, Issue 23, pp. 4557-4565 (2011)
http://dx.doi.org/10.1364/AO.50.004557


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Abstract

This paper presents a method that allows a conventional dual-camera structured light system to directly acquire the three-dimensional shape of the whole surface of an object with high dynamic range of surface reflectivity. To reduce the degradation in area-based correlation caused by specular highlights and diffused darkness, we first disregard these highly specular and dark pixels. Then, to solve this problem and further obtain unmatched area data, this binocular vision system was also used as two camera-projector monocular systems operated from different viewing angles at the same time to fill in missing data of the binocular reconstruction. This method involves producing measurable images by integrating such techniques as multiple exposures and high dynamic range imaging to ensure the capture of high-quality phase of each point. An image-segmentation technique was also introduced to distinguish which monocular system is suitable to reconstruct a certain lost point accurately. Our experiments demonstrate that these techniques extended the measurable areas on the high dynamic range of surface reflectivity such as specular objects or scenes with high contrast to the whole projector-illuminated field.

© 2011 Optical Society of America

OCIS Codes
(100.3010) Image processing : Image reconstruction techniques
(120.6650) Instrumentation, measurement, and metrology : Surface measurements, figure
(150.6910) Machine vision : Three-dimensional sensing
(330.1400) Vision, color, and visual optics : Vision - binocular and stereopsis
(080.5084) Geometric optics : Phase space methods of analysis

ToC Category:
Machine Vision

History
Original Manuscript: April 13, 2011
Revised Manuscript: June 26, 2011
Manuscript Accepted: June 26, 2011
Published: August 4, 2011

Virtual Issues
Vol. 6, Iss. 9 Virtual Journal for Biomedical Optics

Citation
Gui-hua Liu, Xian-Yong Liu, and Quan-Yuan Feng, "3D shape measurement of objects with high dynamic range of surface reflectivity," Appl. Opt. 50, 4557-4565 (2011)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-50-23-4557

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