Graphics processing unit accelerated intensity-based optical coherence tomography angiography using differential frames with real-time motion correction

Yuuki Watanabe; Yuhei Takahashi; Hiroshi Numazawa

doi:10.1117/1.JBO.19.2.021105

11 July 2013 Graphics processing unit accelerated intensity-based optical coherence tomography angiography using differential frames with real-time motion correction

Yuuki Watanabe, Yuhei Takahashi, Hiroshi Numazawa

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Journal of Biomedical Optics, Vol. 19, Issue 2, 021105 (July 2013). https://doi.org/10.1117/1.JBO.19.2.021105

Abstract

We demonstrate intensity-based optical coherence tomography (OCT) angiography using the squared difference of two sequential frames with bulk-tissue-motion (BTM) correction. This motion correction was performed by minimization of the sum of the pixel values using axial- and lateral-pixel–shifted structural OCT images. We extract the BTM-corrected image from a total of 25 calculated OCT angiographic images. Image processing was accelerated by a graphics processing unit (GPU) with many stream processors to optimize the parallel processing procedure. The GPU processing rate was faster than that of a line scan camera (46.9 kHz). Our OCT system provides the means of displaying structural OCT images and BTM-corrected OCT angiographic images in real time.

CC BY: © The Authors. Published by SPIE under a Creative Commons Attribution 4.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.

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Yuuki Watanabe, Yuhei Takahashi, and Hiroshi Numazawa "Graphics processing unit accelerated intensity-based optical coherence tomography angiography using differential frames with real-time motion correction," Journal of Biomedical Optics 19(2), 021105 (11 July 2013). https://doi.org/10.1117/1.JBO.19.2.021105

Published: 11 July 2013

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