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Journal of Biomedical Optics • Open Access

Parallelized multi–graphics processing unit framework for high-speed Gabor-domain optical coherence microscopy

Paper Abstract

Gabor-domain optical coherence microscopy (GD-OCM) is a volumetric high-resolution technique capable of acquiring three-dimensional (3-D) skin images with histological resolution. Real-time image processing is needed to enable GD-OCM imaging in a clinical setting. We present a parallelized and scalable multi-graphics processing unit (GPU) computing framework for real-time GD-OCM image processing. A parallelized control mechanism was developed to individually assign computation tasks to each of the GPUs. For each GPU, the optimal number of amplitude-scans (A-scans) to be processed in parallel was selected to maximize GPU memory usage and core throughput. We investigated five computing architectures for computational speed-up in processing 1000×1000 A-scans. The proposed parallelized multi-GPU computing framework enables processing at a computational speed faster than the GD-OCM image acquisition, thereby facilitating high-speed GD-OCM imaging in a clinical setting. Using two parallelized GPUs, the image processing of a 1×1×0.6  mm 3 skin sample was performed in about 13 s, and the performance was benchmarked at 6.5 s with four GPUs. This work thus demonstrates that 3-D GD-OCM data may be displayed in real-time to the examiner using parallelized GPU processing.

Paper Details

Date Published: 2 April 2014
PDF: 11 pages
J. Biomed. Opt. 19(7) 071410 doi: 10.1117/1.JBO.19.7.071410
Published in: Journal of Biomedical Optics Volume 19, Issue 7
Show Author Affiliations
Patrice Tankam, Univ. of Rochester (United States)
Anand P. Santhanam, Univ. of California, Los Angeles (United States)
Kye-Sung Lee, Korea Basic Science Institute (Korea, Republic of)
Jungeun Won, Univ. of Rochester (United States)
Cristina Canavesi, LighTopTech Corp. (United States)
Jannick P. Rolland, Univ. of Rochester (United States)

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