JCP 2007 Vol.2(2): 73-83 ISSN: 1796-203X
doi: 10.4304/jcp.2.2.73-83
doi: 10.4304/jcp.2.2.73-83
Optical 3D Surface Reconstruction by a Multi-Period Phase Shift Method
Erik Lilienblum, Bernd Michaelis
1Institute for Electronics, Signal Processing and Communications
Otto-von-Guericke University Magdeburg
P.O.Box 4120, 39106 Magdeburg, Germany
Abstract—One problem of classical phase shifting for optical 3D surface reconstruction is the occurrence of ambiguities due to the use of fringe projection. We generally derive a number-theoretical approach to calculate absolute phase measurements which can be used as a base for a reliable surface reconstruction without any ambiguity. The essence of our method is the application of pattern sequences with different periods whereby we homogeneously use all pictures which were taken for the measurement. This leads to a higher average accuracy in the surface reconstruction. Furthermore we propose a technique to avoid typical calculation errors that are produced in classical phase shifting caused by discontinuities, occlusions and reflections on the surface.
Index Terms—surface reconstruction, phase shifting, 3D shape measurement, structured light, fringe projection
Abstract—One problem of classical phase shifting for optical 3D surface reconstruction is the occurrence of ambiguities due to the use of fringe projection. We generally derive a number-theoretical approach to calculate absolute phase measurements which can be used as a base for a reliable surface reconstruction without any ambiguity. The essence of our method is the application of pattern sequences with different periods whereby we homogeneously use all pictures which were taken for the measurement. This leads to a higher average accuracy in the surface reconstruction. Furthermore we propose a technique to avoid typical calculation errors that are produced in classical phase shifting caused by discontinuities, occlusions and reflections on the surface.
Index Terms—surface reconstruction, phase shifting, 3D shape measurement, structured light, fringe projection
Cite: Erik Lilienblum, Bernd Michaelis, "Optical 3D Surface Reconstruction by a Multi-Period Phase Shift Method," Journal of Computers vol. 2, no. 2, pp. 73-83, 2007.
General Information
ISSN: 1796-203X
Abbreviated Title: J.Comput.
Frequency: Bimonthly
Abbreviated Title: J.Comput.
Frequency: Bimonthly
Editor-in-Chief: Prof. Liansheng Tan
Executive Editor: Ms. Nina Lee
Abstracting/ Indexing: DBLP, EBSCO, ProQuest, INSPEC, ULRICH's Periodicals Directory, WorldCat,etc
E-mail: jcp@iap.org
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