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Numerical Analysis of Interference Patterns (view source)
Revision as of 18:59, 3 October 2007
, 18:59, 3 October 2007→Fourier Analysis Method
== Fourier Analysis Method ==
== Fourier Analysis Method ==
[[Image:mexicanhat.jpg|thumb|A "Mexican Hat" function. (courtesy of [http://www.vector.org.uk/archive/v194/finn194.htm])]]
[[Image:mexicanhat.jpg|thumb|A "Mexican Hat" function. (courtesy of [http://www.vector.org.uk/archive/v194/finn194.htm])]]
The Fourier Analysis method of interferograms was created in 1982 by M. Takeda, H. Ina and S. Kobayashi and originally intended as an alternative to Moire Topography and the phase-shifting technique [1,2]. However, this method was ineffective at analyzing closed fringe patterns. A revision to the method, solved this problem by utilizing a Cartesian to polar coordinate transform [3]. The result of which could then be analyzed using the original method proposed.
The Fourier Analysis method of interferograms was created in 1982 by M. Takeda, H. Ina and S. Kobayashi and originally intended as an alternative to Moire Topography and the phase-shifting technique [1,2]. However, this method was ineffective at analyzing closed fringe patterns. A revision to the method, solved this problem by utilizing a Cartesian to polar coordinate transform [3]. The result of which could then be analyzed using the original method proposed.