Publication
Title
Real-time resampling in Fourier domain optical coherence tomography using a graphics processing unit
Author
Abstract
Fourier domain optical coherence tomography (FD-OCT) requires either a linear-in-wavenumber spectrometer or a computationally heavy software algorithm to recalibrate the acquired optical signal from wavelength to wavenumber. The first method is sensitive to the position of the prism in the spectrometer, while the second method drastically slows down the system speed when it is implemented on a serially oriented central processing unit. We implement the full resampling process on a commercial graphics processing unit (GPU), distributing the necessary calculations to many stream processors that operate in parallel. A comparison between several recalibration methods is made in terms of performance and image quality. The GPU is also used to accelerate the fast Fourier transform (FFT) and to remove the background noise, thereby achieving full GPU-based signal processing without the need for extra resampling hardware. A display rate of 25 frames/sec is achieved for processed images (1024×1024 pixels) using a line-scan charge-coupled device (CCD) camera operating at 25.6 kHz.
Language
English
Source (journal)
Journal of biomedical optics / SPIE: International Society for Optical Engineering; International Biomedical Optics Society. - Bellingham, Wash.
Publication
Bellingham, Wash. : SPIE - The International Society for Optical Engineering, 2010
ISSN
1083-3668
Volume/pages
15:3(2010), p. 030511,1-030511,3
ISI
000280642900007
Full text (Publisher's DOI)
UAntwerpen
Faculty/Department
Research group
Publication type
Subject
Affiliation
Publications with a UAntwerp address
External links
E-info
Web of Science
Record
Identification
Creation 15.12.2010
Last edited 11.11.2017
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