1. Articles from yeung lak lee

    1-3 of 3
    1. Real time display Fourier-domain OCT using multi-thread parallel computing with data vectorization

      Real time display Fourier-domain OCT using multi-thread parallel computing with data vectorization

      We demonstrate a real-time display of processed OCT images using multi-thread parallel computing with a quad-core CPU of a personal computer. The data of each A-line are treated as one vector to maximize the data translation rate between the cores of the CPU and RAM stored image data. A display rate of 29.9 frames/sec for processed OCT data (4096 FFT-size x 500 A-scans) is achieved in our system using a wavelength swept source with 52-kHz swept frequency. The data processing times of the OCT image and a Doppler OCT image with a 4-time average are 23.8 msec ...

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    2. Calibration protocol for Fourier-domain OCT using optical fiber gratings

      Calibration protocol for Fourier-domain OCT using optical fiber gratings
      We present a calibration protocol to get the alignment factors of a custom-made spectrometer and the nonlinear fitting function between the measured CCD pixel domain and the wavelength domain to apply the Fourier-domain optical coherence tomography (FD-OCT) using optical fiber gratings. We have used 5 different center wavelength gratings covered the broadband source spectral range with a narrow spectral bandwidth (<0.05 nm) and the same reflectivity (>92 %) to calibrate and align the custom-made spectrometer. The implemented SD-OCT system following the proposed protocol showed the alignment factors as 44.37o incident angle, 53.11o diffraction angle, and 70.0 mm focal length. The spectral resolution of 0 ...
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    3. Quasi-holographic solution to polarization-sensitive optical coherence tomography acceptable to nonlaboratory applications

      Vitali Tougbaev, Tae Joong Eom, Bong-Ahn Yu et al. Experimental proof-of-concept is presented for a quasi-holographic solution to polarization-sensitive optical coherence tomography (PS OCT). Due to decoupling between the reference and sample beams by polarization, the solution seems acceptable to acquisition and communication of optical data in the ... [J. Biomed. Opt. 13, 044014 (2008)] published Mon Aug 11, 2008.
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    1-3 of 3
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  2. Topics in the News

    1. (3 articles) Gwangju Institute of Science and Technology
    2. (3 articles) Tae Joong Eom
    3. (1 articles) UC Irvine
    4. (1 articles) Vanderbilt University
    5. (1 articles) Anita Mahadevan-Jansen
    6. (1 articles) Zhongping Chen
    7. (1 articles) Chang-Seok Kim
    8. (1 articles) Fudan University
    9. (1 articles) UCLA
    10. (1 articles) University of Miami
    11. (1 articles) Capital Medical University
    12. (1 articles) VU University Amsterdam
    13. (1 articles) Srinivas R. Sadda
    14. (1 articles) Johannes F. de Boer
    15. (1 articles) Frank D. Verbraak
    16. (1 articles) Apollo Medical Optics
    17. (1 articles) Heidelberg Engineering
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