
L*u*v* and L*a*b* are sometimes
written CIELUV and CIELAB; they
are pronounced
SEA-love and
SEA-lab. The u* and v* quantities
of color science - and the u' and
v' quantities, to be described-
are unrelated to the U and V color
difference components of video.
The primes in the CIE 1976 u' and
v' quantities denote the successor
to the obsolete 1960 CIE u and v
quantities,
u=u'; v=2/3v '. The
primes are not formally related to
the primes in R', G', B', and Y',
though all imply some degree of
perceptual uniformity.
Extending this concept to color,
XYZ and RGB tristim-
ulus values, and
xyY (chromaticity and luminance), are
far from ...