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Proceedings Article

Using nonequispaced fast Fourier transformation to process optical coherence tomography signals

[+] Author Affiliations
Dierck Hillmann, Peter Koch

Thorlabs HL AG (Germany)

Gereon Hüttmann

Institut für Biomedizinische Optik (Germany)

Proc. SPIE 7372, Optical Coherence Tomography and Coherence Techniques IV, 73720R (July 16, 2009); doi:10.1117/12.831789
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From Conference Volume 7372

  • Optical Coherence Tomography and Coherence Techniques IV
  • Peter E. Andersen; Brett E. Bouma
  • Munich, Germany | June 14, 2009

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.

© (2009) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Dierck Hillmann ; Gereon Hüttmann and Peter Koch
"Using nonequispaced fast Fourier transformation to process optical coherence tomography signals", Proc. SPIE 7372, Optical Coherence Tomography and Coherence Techniques IV, 73720R (July 16, 2009); doi:10.1117/12.831789; http://dx.doi.org/10.1117/12.831789


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