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Color, Gray Scale and Still-Video Image

Compression

Color

Color is a part of life we take for granted. Color adds another dimension to
objects. It helps in making things standout.

Color adds depth to images, enhance images, and helps set objects apart from -

background.

Let us review the physics of color. Visible light is a form of electromagnetic
radiation or radiant energy, as are radio frequencies or x-rays. The radiant energy
spectrum contains audio frequencies, radio Type equation here.frequencies, infrared,
visible light, ultraviolet rays, x-rays and gamma rays.

Radian energy is measured in terms of frequency or wavelength. The relationship
between the two is

= meters

where - is the wavelength in meters
c is the velocity of light in meters per second
f is frequency of the radiation in hertz

Since all electromagnetic waves travel through space at the velocity of light i.e.,
3 x 108 meters/second - the wavelength is calculated by

= x100 meters