Prof. Juan Manuel Vilardy Ortiz Profile

Prof. Juan Manuel Vilardy Ortiz

Professor at Univ Popular del Cesar

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Publications (8)

Proceedings Article | 18 June 2024 Paper

Review of recording materials in holographic lenses for solar energy applications

Eder Alfaro, Juan Vilardy, Marlon Bastidas, Tomás Lloret, Marta Morales-Vidal, Inmaculada Pascual, Carlos Jimenez Ruiz

Proceedings Volume 13015, 130151A (2024) https://doi.org/10.1117/12.3021542

KEYWORDS: Solar energy, Holography, Lenses, Solar cells, Sunlight, Solar radiation, Photovoltaics, Gelatin, Solar thermal energy, Holographic materials

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Proceedings Article | 22 August 2017 Paper

Quantification of the absorption of light in coals using fiber optic sensors

Leonardo Díaz, Juan Vilardy, Cesar Torres

Proceedings Volume 10453, 104530W (2017) https://doi.org/10.1117/12.2271972

KEYWORDS: Absorption, Semiconductor lasers, Calibration, Process control, Absorbance, Statistical analysis

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Proceedings Article | 22 August 2017 Paper

Nonlinear joint transform correlator architectures for images encryption, decryption and authentication systems

Juan Vilardy, María Millán, Elisabet Pérez-Cabré

Proceedings Volume 10453, 1045336 (2017) https://doi.org/10.1117/12.2276425

KEYWORDS: Image encryption, Complex systems, Computer security, Joint transforms, Optical correlators, Gyrators, Fourier optics, Signal processing, Image processing, Image quality

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Proceedings Article | 22 August 2017 Paper

Influence of a perturbation in the Gyrator domain for a joint transform correlator-based encryption system

Juan Vilardy, María Millán, Elisabet Pérez-Cabré

Proceedings Volume 10453, 1045329 (2017) https://doi.org/10.1117/12.2275947

KEYWORDS: Image encryption, Gyrators, Joint transforms, Optical correlators, Computer programming, Computer security, Imaging systems, Numerical simulations

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Proceedings Article | 18 November 2013 Paper

Double image encryption method using the Arnold transform in the fractional Hartley domain

Juan Vilardy, César Torres, Carlos Jimenez

Proceedings Volume 8785, 87851R (2013) https://doi.org/10.1117/12.2022216

KEYWORDS: Image encryption, Image processing, Image restoration, Astatine, Computer security, Digital image processing, Optical image encryption, Numerical simulations, Signal processing, Laser optics

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Proceedings Article | 18 November 2013 Paper

Image encryption-decryption system based on gyrator transform and jigsaw transform

Juan Vilardy, César Torres, Lorenzo Mattos

Proceedings Volume 8785, 87851Q (2013) https://doi.org/10.1117/12.2022209

KEYWORDS: Image encryption, Image processing, Gyrators, Image storage, Image transmission, Computer security, Image restoration, Fourier transforms, Algorithm development, Digital signal processing

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Proceedings Article | 18 November 2013 Paper

Static and dynamic amplitude modulation of light in a twisted nematic liquid crystal display

Juan Vilardy, María Millán, Elisabet Pérez-Cabré

Proceedings Volume 8785, 87853O (2013) https://doi.org/10.1117/12.2020913

KEYWORDS: Spatial light modulators, Ronchi rulings, LCDs, Amplitude modulation, Modulation, Polarization, Molecules, Liquid crystals, Polarizers, Crystals

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Proceedings Article | 18 November 2013 Paper

Joint transform correlator-based encryption system using the Fresnel transform and nonlinear filtering

Juan Vilardy, María Millán, Elisabet Pérez-Cabré

Proceedings Volume 8785, 87853J (2013) https://doi.org/10.1117/12.2020912

KEYWORDS: Image encryption, Complex systems, Computer security, Fractional fourier transform, Optical image encryption, Joint transforms, Image processing, Nonlinear optics, Image retrieval, Optical correlators

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Showing 5 of 8 publications

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