DISCRIMINATION OF ENCLOSED IMAGES BY WEIGHTED STORAGE IN AN OPTICAL ASSOCIATIVE MEMORY

Authors
DUELLI M CUDNEY RS GUNTER P
Citation
M. Duelli et al., DISCRIMINATION OF ENCLOSED IMAGES BY WEIGHTED STORAGE IN AN OPTICAL ASSOCIATIVE MEMORY, Optics communications, 123(1-3), 1996, pp. 49-54
Citations number
11
Categorie Soggetti
Optics
Journal title
Optics communications → ACNP
ISSN journal
00304018
Volume
123
Issue
1-3
Year of publication
1996
Pages
49 - 54
Database
ISI
SICI code
0030-4018(1996)123:1-3<49:DOEIBW>2.0.ZU;2-7
Abstract
We present an all-optical associative memory that can distinguish obje cts that are enclosed by or strongly overlap other objects, This is do ne by appropriately weighting the exposure of the stored images during recording. The images to be recalled associatively are stored in a ph otorefractive LiNbO3 crystal via angular multiplexing. Thresholding of the reconstructed reference beams during associative readout is achie ved by using a saturable absorber with an intensity tunable threshold.