1.What
is a color model?
A
color model is a method for explaining the properties or behavior of color
within some particular context. Example: XYZ model, RGB model.
2.
Define intensity of light, brightness and hue.
Intensity
is the radiant energy emitted per unit time, per unit solid angle, and per unit
projected area of source. Brightness is defined as the perceived intensity of
the light. The perceived light has a dominant frequency (or dominant
wavelength). The dominant frequency is also called as hue or simply as color.
3.
What is purity of light? Define purity or saturation.
Purity
describes how washed out or how “pure” the color of the light appears. Pastels
and pale colors are described as less pure. Purity describes how washed out or
how "pure" the color of the light appears.
4.
Define chromacity and intensity.
The
term chromacity is used to refer collectively to the two properties describing
color characteristics:
purity and dominant frequency. Intensity
is the radiant energy emitted per unit time, per unit solid angle, and p:r unit
projected area of the source.
5.
Define complementary colors and primary colors.
If the
two color sources combine to produce white light, they are referred to as
'complementary colors.
Examples of complementary color
pairs are red and cyan, green and magenta, and blue and yellow. The two or
three colors used to produce other colors in a color model are referred to as
primary colors.
6.
State the use of chromaticity diagram.
Comparing
color gamuts for different sets of primaries. Identifying complementary colors.
Determining dominant wavelength and purity of a given color.
