Cell-based hardware architecture for full-parallel generation algorithm of digital holograms

This paper proposes a new hardware architecture to speed-up the digital hologram calculation by parallel computation. To realize it, we modify the computer-generated hologram (CGH) equation and propose a cell-based very large scale integrated circuit architecture. We induce a new equation to calcula...

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Bibliographic Details
Published in:Optics express 2011-04, Vol.19 (9), p.8750-8761
Main Authors: Seo, Young-Ho, Choi, Hyun-Jun, Yoo, Ji-Sang, Kim, Dong-Wook
Format: Article
Language:English
Subjects:
Algorithms
Equipment Design
Equipment Failure Analysis
Holography - instrumentation
Image Enhancement - instrumentation
Imaging, Three-Dimensional - instrumentation
Signal Processing, Computer-Assisted - instrumentation
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Summary:This paper proposes a new hardware architecture to speed-up the digital hologram calculation by parallel computation. To realize it, we modify the computer-generated hologram (CGH) equation and propose a cell-based very large scale integrated circuit architecture. We induce a new equation to calculate the horizontal or vertical hologram pixel values in parallel, after finding the calculation regularity in the horizontal or vertical direction from the basic CGH equation. We also propose the architecture of the computer-generated hologram cell consisting of an initial parameter calculator and update-phase calculators based on the equation, and then implement them in hardware. Modifying the equation could simplify the hardware, and approximating the cosine function could optimize the hardware. In addition, we show the hardware architecture to parallelize the calculation in the horizontal direction by extending computer-generated holograms. In the experiments, we analyze hardware resource usage and the performance-capability characteristics of the look-up table used in the computer-generated hologram cell. These analyses make it possible to select the amount of hardware to the precision of the results. Here, we used the platform from our previous work for the computer-generated hologram kernel and the structure of the processor.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.19.008750