Journal of the Optical Society of Korea

Optical Society of Korea (한국광학회)
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High Speed SD-OCT System Using GPU Accelerated Mode for in vivo Human Eye Imaging

  • Cho, Nam Hyun (School of Electrical Engineering and Computer Science, Kyungpook National University) ;
  • Jung, Unsang (School of Electrical Engineering and Computer Science, Kyungpook National University) ;
  • Kim, Suhwan (School of Electrical Engineering and Computer Science, Kyungpook National University) ;
  • Jung, Woonggyu (School of Nano-Bioscience and Chemical Engineering, Ulsan National Institute of Science and Technology) ;
  • Oh, Junghwan (Department of Biomedical Engineering, Pukyong National University) ;
  • Kang, Hyun Wook (Department of Biomedical Engineering, Pukyong National University) ;
  • Kim, Jeehyun (School of Electrical Engineering and Computer Science, Kyungpook National University)
  • Received : 2012.11.01
  • Accepted : 2013.01.28
  • Published : 2013.02.25
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Abstract

We developed an SD-OCT (Spectral Domain-Optical Coherence Tomography) system which uses a GPU (Graphics Processing Unit) for processing. The image size from the SD-OCT system is $1024{\times}512$ and the speed is 110 frame/sec in real-time. K-domain linearization, FFT (Fast Fourier Transform), and log scaling were included in the GPU processing. The signal processing speed was about 62 ms using a CPU (Central Processing Unit) and 1.6 ms using a GPU, which is 39 times faster. We performed an in-vivo retinal scan, and reconstructed a 3D visualization based on C-scan images. As a result, there were minimal motion artifacts and we confirmed that tomograms of blood vessels, the optic nerve, and the optic disk are clearly identified. According to the results of this study, this SD-OCT can be applied to real-time 3D display technology, particularly auxiliary instruments for eye operations in ophthalmology.

Keywords

References

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