Error in CIELAB and CIELUV color coordinates for Munsell samples under different light sources

摘要

Random errors were propagated from tristimulus values to CIELAB and CIELUV color coordinates, using the instrumental color measurements of 28 Munsell samples illuminated by 3 light sources and performed by 3 different procedures. The errors found for the CIELAB and CIELUV color coordinates are considerably different for the 3 procedures (in a factor 9 approximately). These errors are highest for the F source (in a factor up to 30), and similar for TL84 and D65. Under our experimental conditions, we obtain that the instrumental errors for the a* and b* coordinates are lower than the visual subthresholds predicted by the CIE94 model (in a factor about 20).