Zobrazeno 1 - 10
of 60
pro vyhledávání: '"C.M. Cartwright"'
Publikováno v:
Optics Communications. 92:19-22
The effects of binarization of the input and the reference data in a correlator with the amplitude-compensated matched filter have been investigated. Computer simulations show that with binarization the noise tolerance of the correlator shows a signi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::80b8aef9e9592328f122d1163c676e2a
https://doi.org/10.1016/0030-4018(92)90211-9
https://doi.org/10.1016/0030-4018(92)90211-9
Publikováno v:
Optics Communications. 90:329-334
We present experimental results describing the influence of optical bias on the transient characteristics of gratings formed in photorefractive BSO. A transient peak is evident, and the properties of this peak can be controlled by suitable adjustment
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c6bad1b4ac87790ab2c77ce1962adff8
https://doi.org/10.1016/0030-4018(92)90286-z
https://doi.org/10.1016/0030-4018(92)90286-z
Publikováno v:
Optics Communications. 86:255-259
The operation of novelty filtering is demonstrated using a hybrid optical and digital system. Dynamic gratings are written in photorefractive Bi 12 SiO 20 at 514 nm and read out at 633 nm. The transient properties of the readout beam are enhanced by
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0e41d2677bea6012b6e581995d58c18b
https://doi.org/10.1016/0030-4018(91)90001-t
https://doi.org/10.1016/0030-4018(91)90001-t
Publikováno v:
Optics Communications. 86:19-24
A real-time computer-aided optical intensity correlator using multiplexed Fresnel holographic filters (FHFs) and a liquid crystal television (LCTV) is described. This technique is characterized by the following. The spatially separated multichannel f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1a7ebef0f71fb26a91894aa0346f520d
https://doi.org/10.1016/0030-4018(91)90236-7
https://doi.org/10.1016/0030-4018(91)90236-7
Publikováno v:
Photorefractive Materials, Effects, and Devices.
The use of photorefractive Bi12SiO20 (BSO) as a dynamic holographic medium in optical processing systems has been the subject of much activity. Typical operations carried out include edge enhancement [1], novelty filtering [2] and the correlation of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4474f28183282cb5122228773532d3fb
https://doi.org/10.1364/pmed.1991.tub3
https://doi.org/10.1364/pmed.1991.tub3
Publikováno v:
Australian Critical Care. 9:32
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::191b372ac38b9c7b7326e900261e13b4
https://doi.org/10.1016/s1036-7314(96)70331-4
https://doi.org/10.1016/s1036-7314(96)70331-4
Holographic-recording improvement in a bismuth silicon oxide crystal by the moving-grating technique
Publikováno v:
Applied Optics. 33:7627
We investigate the enhancement of the diffraction efficiency of dynamic gratings recorded in a bismuth silicon oxide crystal at large modulation by the moving-grating technique. The optimum fringe velocity for maximum diffraction efficiency and the d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::985f2db95ba55eafdea8b19970154eb3
https://doi.org/10.1364/ao.33.007627
https://doi.org/10.1364/ao.33.007627
Publikováno v:
Applied Optics. 32:715
Incoherent color image correlation with a multiwavelength Fresnel holographic filter and a color liquid-crystal television as a real-time input device is demonstrated.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4d4011ac32c14e011f51bcacd13fd27e
https://doi.org/10.1364/ao.32.000715
https://doi.org/10.1364/ao.32.000715
Publikováno v:
Applied Optics. 32:184
A technique for optical pattern recognition using an amplitude-compensated matched filter is presented. With the synthetic discriminant function in a matched spatial filtering application an iterative technique is employed to first obtain the synthet
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8e318bf6a75402f26293e5d2b94e0914
https://doi.org/10.1364/ao.32.000184
https://doi.org/10.1364/ao.32.000184
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