Real-time digital holographic microscopy using the graphic processing unit
Graduate School of Science and Engineering, Yamagata University, Jonan 4-3-16, Yonezawa-City, Yamagata 992-8510 Japan
Opt. Express, Vol. 16, No. 16. (4 August 2008), pp. 11776-11781
@article{shimobaba2008real,
title={Real-time digital holographic microscopy using the graphic processing unit},
author={Shimobaba, T. and Sato, Y. and Miura, J. and Takenouchi, M. and Ito, T.},
journal={Optics Express},
volume={16},
number={16},
pages={11776–11781},
issn={1094-4087},
year={2008},
publisher={Optical Society of America}
}
Digital holographic microscopy (DHM) is a well-known powerful method allowing both the amplitude and phase of a specimen to be simultaneously observed. In order to obtain a reconstructed image from a hologram, numerous calculations for the Fresnel diffraction are required. The Fresnel diffraction can be accelerated by the FFT (Fast Fourier Transform) algorithm. However, real-time reconstruction from a hologram is difficult even if we use a recent central processing unit (CPU) to calculate the Fresnel diffraction by the FFT algorithm. In this paper, we describe a real-time DHM system using a graphic processing unit (GPU) with many stream processors, which allows use as a highly parallel processor. The computational speed of the Fresnel diffraction using the GPU is faster than that of recent CPUs. The real-time DHM system can obtain reconstructed images from holograms whose size is 512×512 grids in 24 frames per second.
December 12, 2010 by hgpu
