A spectral color match attempts to give two colors the same spectral reflectance characteristic, making them a good metameric match with a low degree of metamerism, and thereby reducing the sensitivity of the resulting color match to changes in illuminant, or differences between observers.
12.
Where VIS and NIR stand for the spectral reflectance measurements acquired in the visible ( red ) and near-infrared regions, respectively ( http : / / earthobservatory . nasa . gov / Features / MeasuringVegetation / measuring _ vegetation _ 2 . php ).
13.
Wyszecki introduced the important mathematical concept of metameric blacks, psychophysical definitions of blacks with tristimulus values 0, 0, 0 that within limits can be added to a spectral reflectance to form the various possible metamers ( with an identical set of tristimulus values ) under a given light.
14.
Hashem Akbari received his Ph . D . of Nuclear Engineering at University of California, Berkeley in 1979 . In 2009, he joined the Concordia University in Concordia University, Montreal, Canada where he has established a comprehensive laboratory to measure solar spectral reflectance and thermal emittance of common construction materials is established.
15.
A 1999 study of pitcher morphology and spectral reflectance characteristics showed that " N . bicalcarata " has no colour contrast maximum between the peristome and pitcher cup in the ultraviolet waveband, but small maxima of 0.17 at 450 nm ( violet ), 0.32 at 548 nm ( green ), and 0.16 at 668 nm ( red ).
