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Proceedings Paper

Shift- and rotational- invariant associative memory using BaTiO3
Author(s): Hon-Fai Yau; Sha-Wei Wang; Hsiao-Yi Lee; Yuh-Ping Tong; OuYang Yueh; Chi Ching Chang
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Paper Abstract

A scheme capable of demonstrating shift- and rotational-invariant associative memory is presented. The scheme can be implemented both digitally and optically. In optical implementation, we use one holographic spatial frequency filter and one ordinary hologram of the reference pattern. A BaTiO3 crystal is also employed in the experiment. In the digital implementation of the scheme, in addition to the rotational invariance it is shift invariant too. However, the optical implementation exhibits shift invariance only when the BaTiO3 crystal is sufficiently large.

Paper Details

Date Published: 2 March 1993
PDF: 6 pages
Proc. SPIE 1732, Holographics International '92, (2 March 1993); doi: 10.1117/12.140455
Show Author Affiliations
Hon-Fai Yau, National Central Univ. (Taiwan)
Sha-Wei Wang, National Central Univ. (Taiwan)
Hsiao-Yi Lee, National Central Univ. (Taiwan)
Yuh-Ping Tong, Chung Cheng Institute of Technology (Taiwan)
OuYang Yueh, National Central Univ. (Taiwan)
Chi Ching Chang, Chung Cheng Institute of Technology (Taiwan)

Published in SPIE Proceedings Vol. 1732:
Holographics International '92

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