1 October 2000 Discussion on spatial resolution and sensitivity of fourier transform fringe detection
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Optical Engineering, 39(10), (2000). doi:10.1117/1.1290683
Abstract
The spatial resolution and sensitivity of the Fourier transform method for fringe detection is analyzed. The spatial resolution degradation due to Fourier transform is discussed through a signal processing technique. It is found that the upper limit of spatial resolution for displacement measurement is half the carrier fringe pitch, or half the grid pitch for the grid method. The formulation of sensitivity using signal processing and communication theory is also performed and analyzed. Measures to improve the spatial resolution sensitivity are discussed.
Bing Zhao, Anand Krishna Asundi, "Discussion on spatial resolution and sensitivity of fourier transform fringe detection," Optical Engineering 39(10), (1 October 2000). http://dx.doi.org/10.1117/1.1290683
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KEYWORDS
Spatial resolution

Fourier transforms

Optical filters

Phase measurement

Fringe analysis

Image filtering

Signal to noise ratio

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