Zobrazeno 1 - 8
of 8
pro vyhledávání: '"O. Torres M."'
Publikováno v:
Momento, Vol 0, Iss 9, Pp 56-62 (1993)
In laser sound transmission, the sound signal modulates the intensity of a laser beam, which is later detected by a photodetector. We present two alternatives methods to obtain audio communication at 10 kHz and distances of 20 meters, with He-Ne lase
Externí odkaz:
https://doaj.org/article/4e25b7acfd3c421193cdc81fd20a4c0c
Publikováno v:
Photonics, Vol 6, Iss 4, p 120 (2019)
Photonics
Volume 6
Issue 4
Photonics
Volume 6
Issue 4
The gyrator transform (GT) is used for images processing in applications of light propagation. We propose new image processing operators based on the GT, these operators are: Generalized shift, convolution and correlation. The generalized shift is gi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6725d040d06e19c8668497b951047be7
https://www.mdpi.com/2304-6732/6/4/120
https://www.mdpi.com/2304-6732/6/4/120
Publikováno v:
Photonics, Vol 6, Iss 4, p 115 (2019)
Photonics
Volume 6
Issue 4
Photonics
Volume 6
Issue 4
The Collins diffraction transform (CDT) describes the optical wave diffraction from the generic paraxial optical system. The CDT has as special cases the diffraction domains given by the Fourier, Fresnel and fractional Fourier transforms. In this pap
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0d095b3049269fd4c05eed3eb0137525
https://doi.org/10.3390/photonics6040115
https://doi.org/10.3390/photonics6040115
Publikováno v:
ICUMT
A new images encryption method using The Discrete Fractional Fourier Transform (DFrFT) and the Jigsaw transform is proposed. The main feature of this encryption scheme is that the encrypted image is real and has the same size as the original one, bei
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b9395640665a477a8d232ea03472a77d
https://doi.org/10.1109/icumt.2009.5345645
https://doi.org/10.1109/icumt.2009.5345645
Autor:
César O. Torres M., Yezid Torres M.
Publikováno v:
Education and Training in Optics and Photonics.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::be9e51a6d15eececceb13c9f59bec89f
https://doi.org/10.1364/etop.2003.emi1
https://doi.org/10.1364/etop.2003.emi1
Publikováno v:
Photonics, Vol 6, Iss 4, p 115 (2019)
The Collins diffraction transform (CDT) describes the optical wave diffraction from the generic paraxial optical system. The CDT has as special cases the diffraction domains given by the Fourier, Fresnel and fractional Fourier transforms. In this pap
Externí odkaz:
https://doaj.org/article/383c9b9be5bf4237afccd5c2bd1d5272
Publikováno v:
Photonics, Vol 6, Iss 4, p 120 (2019)
The gyrator transform (GT) is used for images processing in applications of light propagation. We propose new image processing operators based on the GT, these operators are: Generalized shift, convolution and correlation. The generalized shift is gi
Externí odkaz:
https://doaj.org/article/08ea40a9dab04fbc9483970ed42d9d74
Publikováno v:
Photonics, Vol 6, Iss 4, p 116 (2019)
A well-known technique for optical image encryption is the double random phase encoding (DRPE) technique, which uses two random phase masks (RPMs), one RPM at the input plane of the encryption system and the other RPM at the Fourier plane of the opti
Externí odkaz:
https://doaj.org/article/4fc063a046e846c587c2b334414ebc6f