Fast three-step phase-shifting algorithm
Applied Optics, Vol. 45, Issue 21, pp. 5086-5091 (2006)
http://dx.doi.org/10.1364/AO.45.005086
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Abstract
We propose a new three-step phase-shifting algorithm, which is much faster
than the traditional three-step algorithm. We achieve the speed advantage by
using a simple intensity ratio function to replace the arctangent function in
the traditional algorithm. The phase error caused by this new algorithm is
compensated for by use of a lookup table. Our experimental results
show that both the new algorithm and the traditional algorithm generate
similar results, but the new algorithm is 3.4 times faster. By implementing this
new algorithm in a high-resolution, real-time three-dimensional shape measurement system,
we were able to achieve a measurement speed of 40 frames per second at
a resolution of
© 2006 Optical Society of America
OCIS Codes
(100.5070) Image processing : Phase retrieval
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology
(120.2650) Instrumentation, measurement, and metrology : Fringe analysis
ToC Category:
Instrumentation, Measurement, and Metrology
History
Original Manuscript: November 1, 2005
Revised Manuscript: March 6, 2006
Manuscript Accepted: March 7, 2006
Citation
Peisen S. Huang and Song Zhang, "Fast three-step phase-shifting algorithm," Appl. Opt. 45, 5086-5091 (2006)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-45-21-5086
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