IMAGING GLOSSARY
IHS (color imaging)Intensity, Hue, and Saturation.
A system of producing color
imagery that is adapted to human vision.
Intensity is the color brightness,
hue is the actual color and saturation defines the purity or "greyness" of
the color.
The IHS color space
can be represented by a cone. The intensity is measured along the vertical
or height axis where 0% is black, the apex of the cone, and 100% is white,
the center of the base of the cone.
Hue is measured along the circumference
of the base of the color cone by degree. For example, red is 0°, yellow is
60°, green is 120°, cyan is 180°, and blue is 240°.
Saturation is measured
along the horizontal axis, the radius of the cone. No color, 0%, is a point
at the center of the cone and full color, 100%, is a point on the
circumference of the base of the cone.
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