Dr. Julián Espinosa Profile

Dr. Julián Espinosa

at Univ de Alicante

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Author

Publications (10)

Proceedings Article | 1 April 2020 Paper

Optimizing rectangular-shaped object tracking with subpixel resolution

Belen Ferrer, Jorge Perez, David Mas, Julian Espinosa

Proceedings Volume 11353, 113531R (2020) https://doi.org/10.1117/12.2555004

KEYWORDS: Sensors, Numerical simulations, Image sensors, Cameras, Charge-coupled devices, Error analysis, MATLAB, Physics, Optical tracking, Super resolution

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Proceedings Article | 1 April 2020 Paper

High-speed video analysis of spontaneous and reflex to light blinking

Julián Espinosa, Marina Martínez, Jorge Perez, Begoña Domenech, Carmen Vazquez, David Mas

Proceedings Volume 11353, 113531V (2020) https://doi.org/10.1117/12.2555403

KEYWORDS: Eye, Video, Cameras, Light emitting diodes, Electromyography, Statistical analysis, High speed cameras, Video processing, Physics, Imaging systems

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Proceedings Article | 8 October 2015 Open Access

Innovative education networking aimed at multimedia tools for geometrical optics learning

P. García-Martínez, C. Zapata-Rodríguez, C. Ferreira, I. Fernández, D. Pastor, M. Nasenpour, I. Moreno, M. M. Sánchez-López, J. Espinosa, D. Mas, J. Miret

Proceedings Volume 9793, 97930L (2015) https://doi.org/10.1117/12.2223077

KEYWORDS: Geometrical optics, Multimedia, Ray tracing, Prisms, Refraction, Mirrors, Video, Electroluminescence, Lenses, Visualization

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Proceedings Article | 8 May 2012 Paper

Propagation, structural similarity, and image quality

Jorge Pérez, David Mas, Julián Espinosa, Carmen Vázquez, Carlos Illueca

Proceedings Volume 8427, 84273E (2012) https://doi.org/10.1117/12.922531

KEYWORDS: Image quality, Visualization, Eye, Surgery, Geometrical optics, Point spread functions, Modulation transfer functions, Retina, Diffraction, Wavefronts

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Proceedings Article | 8 May 2012 Paper

Corneal topography reinterpretation through separate analysis of the projected rings

Julian Espinosa, Ana Roig, David Mas, Consuelo Hernández, Carlos Illueca

Proceedings Volume 8427, 84273Q (2012) https://doi.org/10.1117/12.922762

KEYWORDS: Calibration, Cornea, Image processing, Cameras, Video, Monochromatic aberrations, Data processing, Reflection, Eye, Data conversion

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Proceedings Article | 2 May 2012 Paper

High speed image techniques for construction safety net monitoring in outdoor conditions

Belen Ferrer, Juan Pomares, Ramón Irles, Julian Espinosa, David Mas

Proceedings Volume 8436, 84361B (2012) https://doi.org/10.1117/12.922732

KEYWORDS: Safety, Image processing, High speed cameras, Hough transforms, Cameras, Image filtering, Detection and tracking algorithms, Digital filtering, Motion analysis, Injuries

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Proceedings Article | 1 May 2012 Paper

Use of subpixel techniques in pocket cameras to measure vibrations and displacements

David Mas, Julián Espinosa, Ana Roig, Belén Ferrer, Jorge Pérez

Proceedings Volume 8436, 84360P (2012) https://doi.org/10.1117/12.922247

KEYWORDS: Cameras, Adaptive optics, Target detection, Video, Spatial resolution, Image processing, Optical resolution, Sensors, Image resolution, Error analysis

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SPIE Journal Paper | 1 March 2010 Open Access

Optical surface reconstruction technique through combination of zonal and modal fitting

Julián Espinosa, David Mas, Jorge Pérez, Carlos Illueca

JBO, Vol. 15, Issue 02, 026022, (March 2010) https://doi.org/10.1117/12.10.1117/1.3394260

KEYWORDS: Zernike polynomials, Cornea, Biomedical optics, Matrices, Optical spheres, Wavefronts, Cameras, Charge-coupled devices, Error analysis, Measurement devices

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SPIE Journal Paper | 1 July 2009 Open Access

Corneal primary aberrations compensation by oblique light incidence

Julian Espinosa, David Mas, Henryk Kasprzak

JBO, Vol. 14, Issue 04, 044003, (July 2009) https://doi.org/10.1117/12.10.1117/1.3158996

KEYWORDS: Monochromatic aberrations, Eye, Point spread functions, Crystals, Eye models, Cornea, Geometrical optics, Wavefronts, Biomedical optics, Retina

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Proceedings Article | 24 September 2005 Paper

Determination of chromatic aberration in the human eye by means of Fresnel propagation theory

David Mas, Jorge Perez, Carlos Illueca, Julian Espinosa, Consuelo Hernandez, Carmen Vazquez, Juan Miret

Proceedings Volume 5959, 595911 (2005) https://doi.org/10.1117/12.624374

KEYWORDS: Eye, Chromatic aberrations, Crystals, Eye models, Colorimetry, Refraction, Wave propagation, Cornea, Refractive index, Image quality

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Showing 5 of 10 publications

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