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    Por favor, use este identificador para citar o enlazar este ítem:https://uvadoc.uva.es/handle/10324/59237

    Título
    Differences in contrast reproduction between electronic devices for visual assessment: Clinical implications
    Autor
    Molina Martín, Ainhoa
    Piñero, David P.
    Coco Martín, María BegoñaAutoridad UVA Orcid
    Leal Vega, LuisAutoridad UVA Orcid
    Fez, Dolores de
    Año del Documento
    2021
    Editorial
    MDPI
    Descripción
    Producción Científica
    Documento Fuente
    Technologies, 2021, vol. 9, n. 3, 68
    Resumen
    The easy access to electronic devices for users has resulted in the development of a vast range of programs and applications for visual evaluation and diagnosis that can be downloaded to any device. Some of them are based on tasks and stimuli that depend on luminance. The aim of the present study was to evaluate differences in luminance reproduction between electronic devices and their implications for contrast reproduction. A total of 20 Galaxy Tab A devices with 8-bit graphics processing units were evaluated. Characterization of every screen was performed obtaining the response curve for the achromatic stimulus. Mean, maximum and minimum luminance, standard deviation and coefficient of variation were obtained to assess differences between devices. Variation of luminance with increasing digital level was observed in all devices following a gamma distribution. Comparison between devices for mean results showed that some of them differed by as much as 45 cd/m2. The coefficient of variation varied from ~5 to 9%. Mean percentage of differences in luminance between devices reached 30%. In conclusion, differences in luminance reproduction between devices were present, even considering devices from the same manufacturing batch. It cannot be assumed that the characterization of one device can be extrapolated to other devices. Every device used for research purposes should be individually characterized to ensure the correct reproduction. For clinical purposes, limitations should be considered by visual specialists.
    Materias (normalizadas)
    Medicina
    Diagnóstico
    Tecnología médica
    Materias Unesco
    3314 Tecnología Médica
    Palabras Clave
    Electronic device
    Luminance reproduction
    Contrast sensitivity
    Dispositivo electronico
    Reproducción de luminancia
    Sensibilidad al contraste
    Revisión por pares
    SI
    DOI
    10.3390/technologies9030068
    Patrocinador
    Ministerio de Economía, Industria y Competitividad - program Ramón y Cajal (RYC-2016-20471)
    Centro para el Desarrollo Tecnológico Industrial y el Fondo Europeo de Desarrollo Regional (IDI-20180123)
    Version del Editor
    https://www.mdpi.com/2227-7080/9/3/68
    Propietario de los Derechos
    © 2021 The Authors
    Idioma
    eng
    URI
    https://uvadoc.uva.es/handle/10324/59237
    Tipo de versión
    info:eu-repo/semantics/publishedVersion
    Derechos
    openAccess
    Aparece en las colecciones
    • DEP52 - Artículos de revista [181]
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    Universidad de Valladolid

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