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1

Large scale calculation for holography using SSD

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Sugiyama A., Akiyama H., Hashikawa S., Shimobaba T., Kakue T., Ito T.
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vol. 6
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issue 3
87-89
EN
Computer based holography such as electro-holography and digital holography advances because the resolution of an imaging display and a sensing device such as a liquid crystal display (LCD) and a charge coupled device (CCD) becomes higher. The higher resolution of an imaging device requires a more powerful computing system. On the other hand, a solid state drive (SSD) develops as a storage device of computers. We studied the effectiveness of an SSD for a large-scale digital holography calculation. When the calculation data scale exceeds the main memory capacity, the SSD system showed better performance compared with a hard disk drive (HDD) system at computational speed and stability.
2

Fast calculation of a computer-generated hologram for RGB and depth images using a wavefront recording plane method

100%
Okada N., Shimobaba T., Ichihashi Y., Oi R., Yamamoto K., Kakue T., Ito T.
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vol. 6
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issue 3
90-92
EN
n a three-dimensional display by a computer-generated hologram (CGH), fast computation of CGH is required. In this paper, in order to accelerate CGH generation, the following two methods are used; the first method is band-limited double-step Fresnel diffraction. Compared with convolution-based diffraction, such as an angular spectral method, the proposed method requires less computational time and memory. The second method is a wavefront recording plane (WRP) method which reduces the calculation amount by placing WRPs in the vicinity of an object. We succeeded in speeding up CGH calculation by combining both methods.
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