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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 41, Iss. 25 — Sep. 1, 2002
  • pp: 5267–5274

Three-dimensional optical high-resolution profiler with a large observation field: foot arch behavior under low static charge studies

Jaime Meneses, Tijani Gharbi, and Jean Yves Cornu  »View Author Affiliations


Applied Optics, Vol. 41, Issue 25, pp. 5267-5274 (2002)
http://dx.doi.org/10.1364/AO.41.005267


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Abstract

Our aim is to describe a method for detecting small deformations from a three-dimensional (3D) shape of large lateral dimensions. For this purpose the measurement method is based on the simultaneous utilization of several 3D optical systems and the phase-shifting technique. In this way, the following problems appear: optical distortion due to the large field observed, nonlinear phase-to-height conversion, conversion of image coordinates into object coordinates for each 3D optical system, and coordinate unification of all optical systems. The resolution is 50 µm with a field of view of 320 mm × 150 mm. We used this system to study the 3D human foot arch deformation under low loads in vivo. First results indicate the hysteresis behavior of the human foot under a low load (50 to 450 N).

© 2002 Optical Society of America

OCIS Codes
(120.2650) Instrumentation, measurement, and metrology : Fringe analysis
(120.2830) Instrumentation, measurement, and metrology : Height measurements
(120.3890) Instrumentation, measurement, and metrology : Medical optics instrumentation
(120.3940) Instrumentation, measurement, and metrology : Metrology
(120.6650) Instrumentation, measurement, and metrology : Surface measurements, figure

History
Original Manuscript: October 5, 2001
Revised Manuscript: January 24, 2002
Published: September 1, 2002

Citation
Jaime Meneses, Tijani Gharbi, and Jean Yves Cornu, "Three-dimensional optical high-resolution profiler with a large observation field: foot arch behavior under low static charge studies," Appl. Opt. 41, 5267-5274 (2002)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-41-25-5267

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