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Proceedings Paper

Pre-calculated object light-based fast calculation method for computer-generated hologram
Author(s): Hironobu Sakata; Yuji Sakamoto
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Paper Abstract

Computer generated holograms are expected to be an ideal three-dimensional display system. Enormous computation time, however, is required to calculate holograms. There are fast calculation methods based on fast Fourier transforms using a patch model, but they require two-dimensional fast Fourier transforms for each patch. Therefore, calculating the object light from a complex object that has many patches takes much computation time. We propose a fast calculation method using pre-calculated object light without the fast Fourier transform and show the results of our method. Our method calculates object lights from complex objects including large-angle tilted patches using only one cylindrical pre-calculated object light. The memory needed for pre-calculated object light is smaller than the previously proposed method.

Paper Details

Date Published: 11 February 2010
PDF: 9 pages
Proc. SPIE 7619, Practical Holography XXIV: Materials and Applications, 76190Y (11 February 2010); doi: 10.1117/12.841791
Show Author Affiliations
Hironobu Sakata, Hokkaido Univ. (Japan)
Yuji Sakamoto, Hokkaido Univ. (Japan)

Published in SPIE Proceedings Vol. 7619:
Practical Holography XXIV: Materials and Applications
Hans I. Bjelkhagen; Raymond K. Kostuk, Editor(s)

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