Learning Event 4:
DEFINE CHROMATICITY
1.
Chromaticity:
Chromaticity
is
that
characteristic
of
a
color
representing hue and saturation together. The word "chroma" usually refers
to the saturation of colors.
The color on a color television receiver
affects the vividness of the colors in the picture but not their hue.
2.
The most commonly used chromaticity diagram is the one shown in figure
2-5 which is based on the color mixture curves shown in figure 2-4. These
color mixture curves show the amount of the three primary colors, blue, red,
and green, needed to match unit energy at each wavelength in the spectrum.
Figure 2-5.
Fundamental color mixture curves
a. The derivation of the chromaticity diagram from the color mixture
curves is rather complex, and need not be explained in this lesson.
b. The chromaticity diagram of figure 2-6 is a standardized color map
for the system of colorimetry used by the International Commission on
c. The
color
television
primaries
listed
in
the
FCC
signal
specification are specified in this system of colorimetry and appear as
points on the chromaticity diagram.
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