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Spectral and Color Characterization of a Quantum Dots Display

AutorHuraibat, Khalil; Perales, Esther; Kirchner, Eric; Lans, Ivo van der; Ferrero, Alejandro ; Campos Acosta, Joaquín ; Martínez-Verdú, Francsico M.
Fecha de publicación2017
EditorKorea Society of Color Studies
CitaciónProceedings of the 13th AIC Congress. Being color with health: PS03-61-1- PS03-61-4 (2017)
ResumenDigital simulation by rendering gonio-apparent objects it becomes a necessity due to the huge impact is giving day by day in different industries. However, in a recent publication, the limitations of a conventional LCD display for this goal was shown, since many visual attributes of goniochromatic coatings fall outside the colorgamut of this type of electronic display. Consequently, gamut-mapping algorithms, new extended RGB color spaces and/or multi-primaries displays are necessary to reproduce faithfully the colorimetric properties of these materials. Recently, quantum dots (QD) displays appeared in the market with attractive characteristics. QD are semiconductor nanocrystals that provide lifelike colors in an energy-efficient way. Thus, a wide color gamut is achieved. Therefore, a proper color characterization and calibration of this type of displays is needed. For this study, a spectral and color characterization of a QD display is performed. For this purpose, the spectral radiance of a set of images was displayed on a QD display and measured by a tele-spectroradiometer. As results, a good chromaticity constancy of primaries was obtained after black correction is applied. It was checked that this display satisfies channel additivity and the electro-optical transfer function for the three channels can be modelled as a power function. The GOG model was found to well characterize this display. Color reproduction was evaluated in terms of CIEDE2000. The computed CIELAB values of a set of images differ from their objects’ coordinates by an average value of ΔΕ00 = 1.07. Therefore, we conclude that the accuracy obtained with the GOG model is sufficient to get good performance in 3D rendering. On another hand, the spatial uniformity of the display is checked. The display shows poor spatial uniformity in terms of luminance, while the uniformity considering chromatic values shows much better results.
Descripción4 pags., 3 figs., 1 tab. -- 13th AIC (Association Internationale de la Couleur) International Congress, Jeju Island of Korea,16th to 20th of October, 2017
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