Criteria for phase reconstruction using Fourier transformation method

Bing Zhao; Anand Krishna Asundi

doi:10.1117/12.409279

16 November 2000 Criteria for phase reconstruction using Fourier transformation method

Bing Zhao, Anand Krishna Asundi

Proceedings Volume 4123, Image Reconstruction from Incomplete Data; (2000) https://doi.org/10.1117/12.409279
Event: International Symposium on Optical Science and Technology, 2000, San Diego, CA, United States

Abstract

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.

Citation Download Citation

Bing Zhao and Anand Krishna Asundi "Criteria for phase reconstruction using Fourier transformation method", Proc. SPIE 4123, Image Reconstruction from Incomplete Data, (16 November 2000); https://doi.org/10.1117/12.409279

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