Exploració per autor "Millán Garcia-Varela, M. Sagrario"
Ara es mostren els items 64-83 de 118
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New trends in intraocular lens imaging
Millán Garcia-Varela, M. Sagrario; Alba Bueno, Francisco; Vega Lerín, Fidel (2011)
Article
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No-reference quality metrics for eye fundus imaging
Marrugo Hernández, Andrés Guillermo; Millán Garcia-Varela, M. Sagrario; Gabriel, Cristóbal; Gabarda, Salvador; Abril Báez, Héctor (Springer, 2011)
Comunicació de congrés
Accés restringit per política de l'editorial -
Nonlinear encryption for multiple images based on a joint transform correlator and the Gyrator transform
Pérez, Ronal A; Vilardy Ortiz, Juan Manuel; Pérez Cabré, Elisabet; Millán Garcia-Varela, M. Sagrario; Torres Moreno, Cesar Orlando (Multidisciplinary Digital Publishing Institute (MDPI), 2023-02-01)
Article
Accés obertA novel nonlinear encryption–decryption system based on a joint transform correlator (JTC) and the Gyrator transform (GT) for the simultaneous encryption and decryption of multiple images in grayscale is proposed. This ... -
Nonlinear image encryption using a fully phase nonzero-order joint transform correlator in the Gyrator domain
Vilardy Ortiz, Juan Manuel; Millán Garcia-Varela, M. Sagrario; Pérez Cabré, Elisabet (Elsevier, 2015-12-14)
Article
Accés obert© 2016 Elsevier Ltd. A novel nonlinear image encryption scheme based on a fully phase nonzero-order joint transform correlator architecture (JTC) in the Gyrator domain (GD) is proposed. In this encryption scheme, the two ... -
Nonlinear joint transform correlator architectures for images encryption, decryption and authentication systems
Vilardy Ortiz, Juan Manuel; Millán Garcia-Varela, M. Sagrario; Pérez Cabré, Elisabet (International Society for Photo-Optical Instrumentation Engineers (SPIE), 2017)
Comunicació de congrés
Accés restringit per política de l'editorial -
Nonlinear optical security system based on a joint transform correlator in the Fresnel domain
Vilardy Ortiz, Juan Manuel; Millán Garcia-Varela, M. Sagrario; Pérez Cabré, Elisabet (2014-03-10)
Article
Accés obertA new optical security system for image encryption based on a nonlinear joint transform correlator (JTC) in the Fresnel domain (FrD) is proposed. The proposal of the encryption process is a lensless optical system that ... -
Nonlinear techniques for secure optical encryption and multifactor authentication
Millán Garcia-Varela, M. Sagrario; Pérez Cabré, Elisabet; Vilardy Ortiz, Juan Manuel (Institute of Physics (IOP), 2018)
Capítol de llibre
Accés restringit per política de l'editorial -
Occlusion and noise tests on the encrypted image produced by a security system based on a joint transform correlator and the Fresnel transform
Vilardy Ortiz, Juan Manuel; Millán Garcia-Varela, M. Sagrario; Pérez Cabré, Elisabet (Institute of Physics (IOP), 2019-06)
Article
Accés obertIn this work, the occlusion and noise test on the encrypted image produced by a joint transform correlator-based encryption system in the Fresnel domain (FrD) are computed and presented, in order to check the performance ... -
Ophthalmic compensation of visual ametropia based on a programmable diffractive lens
Millán Garcia-Varela, M. Sagrario; Pérez Cabré, Elisabet; Romero Pérez, Lenny Alexandra; Ramirez, Natalia (2013)
Text en actes de congrés
Accés restringit per política de l'editorial -
Optical and clinical outcomes of an enhanced monofocal intraocular lens for high hyperopia
Fernández-Vega Cueto, Luis; Vega Lerín, Fidel; Guerra Velasco, Raquel; Millán Garcia-Varela, M. Sagrario; Madrid Costa, David; Alfonso, José F. (2022-09)
Article
Accés obertPurpose: To evaluate the optical and clinical performance of an enhanced monofocal intraocular lens (IOL) (TECNIS Eyhance ICB00; Johnson & Johnson Vision) in patients with high hyperopia and a short axial length. Methods: ... -
Optical and clinical outcomes of an extended range of vision intraocular lens
Fernández-Vega Cueto, Luis; Madrid Costa, David; Alfonso Bartolozzi, Belén; Vega Lerín, Fidel; Millán Garcia-Varela, M. Sagrario; Alfonso, José F. (2022-03)
Article
Accés obertPurpose: To assess the in vitro optical quality and halo formation of the AcrySof IQ Vivity intraocular lens (IOL) (Alcon Laboratories, Inc) and to evaluate the clinical outcomes in patients who had bilateral implantation ... -
Optical assessment and expected visual quality of four extended range of vision intraocular lenses
Azor Morón, Juan Antonio; Vega Lerín, Fidel; Armengol Cebrian, Jesús; Millán Garcia-Varela, M. Sagrario (2022-11)
Article
Accés obertPurpose: To assess the optical performance of four extended range of vision (ERV) intraocular lenses (IOLs) and predict the visual quality of the average pseudophakic patient. Methods: Four ERV IOLs (LuxSmart, Bausch & ... -
Optical correlation with variable discrimination capability: experimental results
Millán Garcia-Varela, M. Sagrario; Pérez Cabré, Elisabet; Kotynski, Rafal; Chalasinska-Macukow, Katarzyna (2000)
Article
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Optical Data Encryption. Supplements
Millán Garcia-Varela, M. Sagrario; Pérez Cabré, Elisabet (Wiley-VCH, 2011)
Capítol de llibre
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Optical implementation of multifocal programmable lens with single and multiple axes
Romero Pérez, Lenny Alexandra; Millán Garcia-Varela, M. Sagrario; Pérez Cabré, Elisabet (Institute of Physics (IOP), 2010)
Comunicació de congrés
Accés obertIn this work we analyse the generation of a diffractive optical element (DOE) consisting of a multifocal Fresnel lens by means of an LCoS (liquid cristal on silicon) spatial light modulator (SLM). The multifocal lens is ... -
Optical performance of a monofocal intraocular lens designed to extend depth of focus
Vega Lerín, Fidel; Millán Garcia-Varela, M. Sagrario; Gil Arnal, Julian Miguel Ángel; Garzón Jimenez, Nuria (2020-09-01)
Article
Accés obertPurpose: To test the performance of a new monofocal intraocular lens, intended to extend depth of focus (Tecnis Eyhance, ICB00; Johnson & Johnson Vision, Inc) (ICB-IOL), in comparison to a standard monofocal IOL (Tecnis ... -
Optical resources for highly secure remote object authentication
Millán Garcia-Varela, M. Sagrario; Pérez Cabré, Elisabet; Bahram, Javidi (SPIE-The International Society for Photo-Optical Instrumentation Engineers, 2007)
Comunicació de congrés
Accés obert -
Optical techniques for information security
Matoba, Osamu; Nomura, Takanori; Pérez Cabré, Elisabet; Millán Garcia-Varela, M. Sagrario; Javidi, Bahram (2009-06)
Article
Accés restringit per política de l'editorial -
Optical validation of combined images for high-secure identification. ID tags and processors
Millán Garcia-Varela, M. Sagrario; Pérez Cabré, Elisabet; Bahram, Javidi (2007)
Text en actes de congrés
Accés restringit per política de l'editorialIn this work, we use a novel multifactor encryption-authentication technique that reinforces optical security by allowing the simultaneous AND-verification of more than one primary image. This optical technique is attractive ... -
Patient-Perceived and Laboratory-Measured Halos Associated with Diffractive Bifocal and Trifocal Intraocular Lenses
Alba Bueno, Francisco; Garzón Jimenez, Nuria; Vega Lerín, Fidel; Poyales, Francisco; Millán Garcia-Varela, M. Sagrario (2017-11-21)
Article
Accés obertPurpose: To examine and assess the halos generated in distance vision by multifocal intraocular lenses (IOLs) using both in vitro objective and in vivo subjective methods. Setting: The objective method was carried out in ...