
YUV and luminance
considered harmful
A
This is a plea for precise terminology. The notation
YUV,
and the term
luminance,
are widespread in digital video.
In truth, digital video almost never uses
Y'UV
color
difference components, and never directly represents
the
luminance
of color science. The common terms are
almost always wrong. This note explains why. I urge
video engineers and computer graphics specialists to
use the correct terms, almost always Y'CBC R and
luma.
Cement
vs.
concrete
I'll demonstrate by analogy why it is important to use
correct terms. Next time you're waiting in line ...