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Proceedings Article

New phase retrieval method for single-shot x-ray Talbot imaging using windowed Fourier transform

[+] Author Affiliations
Kentaro Nagai, Hidenosuke Itoh, Genta Sato, Takashi Nakamura, Kimiaki Yamaguchi, Takeshi Kondoh, Soichiro Handa, Toru Den

Canon Inc. (Japan)

Proc. SPIE 8127, Optical Modeling and Performance Predictions V, 812706 (September 09, 2011); doi:10.1117/12.893281
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From Conference Volume 8127

  • Optical Modeling and Performance Predictions V
  • Mark A. Kahan
  • San Diego, California, USA | August 21, 2011

abstract

We propose a new phase retrieval technique using a windowed Fourier transform (WFT) method for fringe pattern analysis to obtain a high-resolution phase map. The WFT method has been studied to improve the noise robustness of FT methods. In our proposed technique, an extra step is added to isolate the WFT spectrum containing phase information from other spectra, which is effective when a narrow window function is used for the high-resolution phase map. We demonstrate phase retrieval along both x- and y-axes from a two-dimensional fringe pattern obtained by X-ray Talbot imaging. Differential phase maps in high resolution with effective noise reduction are retrieved by the proposed method.

© (2011) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Citation

Kentaro Nagai ; Hidenosuke Itoh ; Genta Sato ; Takashi Nakamura ; Kimiaki Yamaguchi, et al.
"New phase retrieval method for single-shot x-ray Talbot imaging using windowed Fourier transform", Proc. SPIE 8127, Optical Modeling and Performance Predictions V, 812706 (September 09, 2011); doi:10.1117/12.893281; http://dx.doi.org/10.1117/12.893281


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