Using nonequispaced fast Fourier transformation to process optical coherence tomography signals

Dierck Hillmann; Gereon Hüttmann; Peter Koch

doi:10.1117/12.831789

16 July 2009 Using nonequispaced fast Fourier transformation to process optical coherence tomography signals

Dierck Hillmann, Gereon Hüttmann, Peter Koch

Author Affiliations +

Proceedings Volume 7372, Optical Coherence Tomography and Coherence Techniques IV; 73720R (2009) https://doi.org/10.1117/12.831789
Event: European Conferences on Biomedical Optics, 2009, Munich, Germany

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.

Citation Download 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 (16 July 2009); https://doi.org/10.1117/12.831789

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