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Proceedings Paper

Using nonequispaced fast Fourier transformation to process optical coherence tomography signals
Author(s): Dierck Hillmann; Gereon Hüttmann; Peter Koch
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Paper Abstract

In OCT imaging the spectra that are used for Fourier transformation are in general not acquired linearly in k-space. Therefore one needs to apply an algorithm to re-sample the data and finally do the Fourier Transformation to gain depth information. We compare three algorithms (Non-Equispaced DFT, interpolated FFT and Non-Equispaced FFT) for this purpose in terms of speed and accuracy. The optimal algorithm depends on the OCT device (speed, SNR) and the object.

Paper Details

Date Published: 16 July 2009
PDF: 6 pages
Proc. SPIE 7372, Optical Coherence Tomography and Coherence Techniques IV, 73720R (16 July 2009); doi: 10.1117/12.831789
Show Author Affiliations
Dierck Hillmann, Thorlabs HL AG (Germany)
Gereon Hüttmann, Institut für Biomedizinische Optik (Germany)
Peter Koch, Thorlabs HL AG (Germany)


Published in SPIE Proceedings Vol. 7372:
Optical Coherence Tomography and Coherence Techniques IV
Peter E. Andersen; Brett E. Bouma, Editor(s)

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