Abstract
A current concern in modern metrology is the estimation of uncertainties of measurement in a more consistent manner than applied in the past. This article derives analytical expressions for uncertainties in (x,y), (u,v), and (u′,v′) chromaticity coordinates derived both from direct spectral measurements and from filtered tristimulus colorimeter measurements. Correlations between the tristimulus responses are included. Correlation coefficients are estimated for both broad- and narrow-band sources. Conclusions are drawn for accuracy requirements for spectral matching and for signal-to-noise ratios to achieve a particular uncertainty. Specific examples are given for traffic signal lights, light-emitting diodes, and a luminance standard. © 2000 John Wiley & Sons, Inc. Col Res Appl, 25, 349–355, 2000
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