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1990-06-20
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bitmap An image composed of binary pixels (black & white)
grayscale
An image composed of gray levels (using 2 to 8 bits, usually
8 bits). May be mapped or unmapped.
RGB, 24bit
An image which contains 3 8bit values of red, green, and
blue for each pixel. They are by definition unmapped.
mapped image, mapped color image
A mapped image contains a single plane of values, 1 to 8 bits
(usually 8, although 4-7 are also found), and a colormap
which has three vectors of color values for red, green and
blue.
unmapped image
Either 8 bit grayscale or 24bit (RGB) color.
The unmap