Differences in Contrast Reproduction between Electronic Devices for Visual Assessment: Clinical Implications
| Autor: | Luis Leal-Vega, María B. Coco-Martín, David P. Piñero, Ainhoa Molina-Martín, Dolores de Fez Saiz |
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| Přispěvatelé: | Universidad de Alicante. Departamento de Óptica, Farmacología y Anatomía, Grupo de Óptica y Percepción Visual (GOPV) |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Technology
Medicina Reproduction (economics) Reproducción de luminancia European Regional Development Fund Luminance characterization Dispositivo electronico 3314 Tecnología Médica electronic device Electronic device Political science Display Visual assessment Regional science Contrast sensitivity Tecnología médica luminance characterization Óptica contrast sensitivity tablet Diagnóstico luminance reproduction Sensibilidad al contraste Contrast (music) display Christian ministry Tablet Luminance reproduction |
| Zdroj: | Technologies, Vol 9, Iss 68, p 68 (2021) RUA. Repositorio Institucional de la Universidad de Alicante Universidad de Alicante (UA) Technologies Volume 9 Issue 3 |
| ISSN: | 2227-7080 |
| Popis: | Producción Científica 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. 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) |
| Databáze: | OpenAIRE |
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