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- GLOSSARY OF IMAGE PROCESSING TERMS
- ==================================
-
- This document is (c) Copyright 1994-1995, Stuart Denman.
- All rights reserved.
- This document may only be included with Speed of Light(tm) Image
- Processor and may be reproduced only for personal reference.
-
-
- DITHERING - Using a pattern of dots to create the illusion of another color or
- shade. A minimum of two colors must be used in the dot pattern.
-
- FILTERED IMAGE SCALING (FIS) - A process applied to an image where each
- pixel's neighboring pixels can have an effect on its color and/or intensity
- based on the filter used.
-
- FIXED COLORMAP - A palette in which fixed amounts of red, green, and blue are
- used to try to cover the full palette. No fine shades are presented so
- dithering must be used to account for these losses.
-
- GAMMA-CORRECTION - A function used to brighten or darken an image which is
- more "true to life" than just uniformly increasing all the intensities.
-
- HISTOGRAM - A "graph" of sorts that shows some value versus the intensity of
- color. The histogram "of an image" shows which intensities are most abundant
- in the image. A transformation histogram maps one intensity of color to
- another intensity. There are other kinds of histograms used in Speed of
- Light.
-
- INVERSE COLORMAP - Given an arbitrary input color defined by a red, green, and
- blue value, an inverse colormap allows you to efficiently determine which color
- in the image best represents that input color. The higher the resolution of the
- inverse colormap, the more accurately the representative color can be
- determined. 5 bits of resolution is usually good enough for most purposes.
-
- INVERSION OF THE COLORMAP - Dark colors in the palette are mapped to light
- colors and visa-versa.
-
- MONOCHROME - Two colors, usually black and white.
-
- OCTREE - A fast data structure that is used for color quantization.
-
- PIXEL - Picture element. One "dot" on the screen or in the image.
-
- QUANTIZATION - Reduction of colors. An example is from truecolor to 256 color.
-
- TRUECOLOR - An image where no palette exists, each pixel is defined individually
- so that there are virtually an unlimited number of colors.
-