Some Approaches for Light and Color on the Surface of Mars
Metadatos
Mostrar el registro completo del ítemAutor
Melgosa Latorre, Manuel; Hernández Andrés, Javier; Sánchez Marañón, Manuel; Cuadros, Javier; Vicente-Retortillo, ÁlvaroEditorial
MDPI
Materia
colorimetry sol-light daylight
Fecha
2024-11-22Referencia bibliográfica
Melgosa Latorre, M. et. al. Appl. Sci. 2024, 14, 10812. [https://doi.org/10.3390/app142310812]
Patrocinador
MICIU/AEI/10.13039/501100011033 and ERDF/EU, grants PID2022-138031NB-I00 and PID2021-126719OB-C41Resumen
We analyzed the main colorimetric characteristics of lights on Mars’ surface from 3139 total
spectral irradiances provided by the COMIMART model (J. Space Weather Space Clim. 5, A33,
2015), modifying the parameters of ‘solar zenith angle’ and ‘opacity’, related to the time of day
and the amount of dust in the atmosphere of Mars, respectively. Lights on Mars’ surface have
chromaticities that are mainly located below the Planckian locus, correlated color temperature in the
range of 2333 K–5868 K, and CIE 2017 color fidelity indices above 93. For the 24 samples in the X-Rite
ColorChecker® and an extreme dust opacity change from 0.1 to 8.1 in the atmosphere, the average
color inconstancy generated by the change in Mars’ light using the chromatic adaptation transform
CIECAT16 was about 5 and 8 CIELAB units for solar zenith angles of 0◦ and 72◦, respectively. We
propose a method to compute total spectral irradiances on the surface of Mars from a selected value
of correlated color temperature in the range of 2333 K–5868 K. This method is analogous to the one
currently adopted by the International Commission on Illumination to compute daylight illuminants
on the surface of Earth (CIE 015:2018, clause 4.1.2). The average accuracy of 3139 reconstructed
total spectral irradiances using the proposed method was 0.9999558 using GFC (J. Opt. Soc. Am. A
14, 1007–1014, 1997) and 0.0009 ΔEu′v′ units, a value just below noticeable chromaticity differences
perceptible by human observers at 50% probability. Total spectral irradiances proposed by Barnes for
five correlated temperatures agreed with those obtained from the current proposed method: on the
average, GFC = 0.9979521 and 0.0023 ΔEu′v′ units.