Criteria for phase reconstruction using Fourier transformation method

Details Criteria for phase reconstruction using Fourier transformation method Criteria for phase reconstruction using Fourier transformation method

Nov 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000spie.4123..269z&link_type=abstract

Proc. SPIE Vol. 4123, p. 269-278, Image Reconstruction from Incomplete Data, Michael A. Fiddy; Rick P. Millane; Eds.

Computer Science

Scientific paper

An analysis of the spatial resolution and sensitivity of Fourier transform method for fringe detection is carried out. 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 phase measurement is half the carrier fringe pitch, or half the grid pitch for grid method. The formulation of sensitivity using signal processing and communication theory is also performed and analyzed. The upper limit of the sensitivity for phase measurement is 2(pi) dividing by the number of pixels in a line of the fringe image. Measures to improve the spatial resolution, sensitivity are finally discussed.

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