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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 49, Iss. 25 — Sep. 1, 2010
  • pp: 4756–4762

Real-time processing for full-range Fourier-domain optical-coherence tomography with zero-filling interpolation using multiple graphic processing units

Yuuki Watanabe, Seiya Maeno, Kenji Aoshima, Haruyuki Hasegawa, and Hitoshi Koseki  »View Author Affiliations


Applied Optics, Vol. 49, Issue 25, pp. 4756-4762 (2010)
http://dx.doi.org/10.1364/AO.49.004756


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Abstract

The real-time display of full-range, 2048   axial pixel × 1024   lateral pixel , Fourier-domain optical- coherence tomography (FD-OCT) images is demonstrated. The required speed was achieved by using dual graphic processing units (GPUs) with many stream processors to realize highly parallel processing. We used a zero-filling technique, including a forward Fourier transform, a zero padding to increase the axial data-array size to 8192, an inverse-Fourier transform back to the spectral domain, a linear interpolation from wavelength to wavenumber, a lateral Hilbert transform to obtain the complex spectrum, a Fourier transform to obtain the axial profiles, and a log scaling. The data-transfer time of the frame grabber was 15.73 ms , and the processing time, which includes the data transfer between the GPU memory and the host computer, was 14.75 ms , for a total time shorter than the 36.70 ms frame-interval time using a line-scan CCD camera operated at 27.9 kHz . That is, our OCT system achieved a processed-image display rate of 27.23 frames/s.

© 2010 Optical Society of America

OCIS Codes
(100.2000) Image processing : Digital image processing
(110.4500) Imaging systems : Optical coherence tomography
(170.4500) Medical optics and biotechnology : Optical coherence tomography

ToC Category:
Image Processing

History
Original Manuscript: April 13, 2010
Revised Manuscript: July 20, 2010
Manuscript Accepted: July 25, 2010
Published: August 26, 2010

Virtual Issues
Vol. 5, Iss. 13 Virtual Journal for Biomedical Optics

Citation
Yuuki Watanabe, Seiya Maeno, Kenji Aoshima, Haruyuki Hasegawa, and Hitoshi Koseki, "Real-time processing for full-range Fourier-domain optical-coherence tomography with zero-filling interpolation using multiple graphic processing units," Appl. Opt. 49, 4756-4762 (2010)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-49-25-4756

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Supplementary Material


» Media 1: AVI (5165 KB)     

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