Real-time digital holographic microscopy using the graphic processing unit.
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 x 512 grids in 24 frames per second.
Shimobaba
Tomoyoshi
T
Graduate School of Science and Engineering, Yamagata University, Jonan 4-3-16, Yonezawa-City, Yamagata 992-8510, Japan. shimo@yz.yamagata-u.ac.jp
Sato
Yoshikuni
Y
Miura
Junya
J
Takenouchi
Mai
M
Ito
Tomoyoshi
T
D003196:Computer Graphics / Q000295:instrumentation*; D003199:Computer Systems; D004867:Equipment Design; D019544:Equipment Failure Analysis; D006696:Holography / Q000295:instrumentation*; D008853:Microscopy / Q000295:instrumentation*; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*; D014741:Video Recording / Q000295:instrumentation*