Noise-immune method for locating wrap regions in phase-step interferometry
Optics Letters, Vol. 21, Issue 16, pp. 1268-1270 (1996)
http://dx.doi.org/10.1364/OL.21.001268
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Abstract
A method is presented that can be applied to phase-step interferometry to locate the regions within which integral multiples of π should be added to the wrapped phase that results from arctangent calculations. Unlike previous methods, this one is immune to the noise-related errors that confuse simple phase-unwrap schemes. It makes use of the fact that the noise-related errors occur at fixed locations in the phase map, whereas the location of the wrap regions depends on the way in which the arctangent is calculated.
© 1996 Optical Society of America
Citation
Karl A. Stetson, "Noise-immune method for locating wrap regions in phase-step interferometry," Opt. Lett. 21, 1268-1270 (1996)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-21-16-1268
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