Specifications

Glossary
Glossary-1
absolute colors Colors specified by each pixel’s coordinates in a
color space. Intel Image Processing Library
functions use images with absolute colors. See
palette colors.
alpha channel A color channel, also known as the opacity
channel, that can be used in color models; for
example, the RGBA model.
arithmetic operation An operation that adds, subtracts, multiplies,
shifts, or squares the image pixel values.
channel of interest The color channel on which an operation acts
(or processing occurs). Channel of interest
(COI) can be considered as a separate case of
region of interest (ROI).
CMY Cyan-magenta-yellow. A three-channel color
model that uses cyan, magenta, and yellow color
channels.
CMYK Cyan-magenta-yellow-black. A four-channel
color model that uses cyan, magenta, yellow,
and black color channels.
COI See channel of interest.
color-twist matrix A matrix used to multiply the pixel coordinates
in one color space for determining the
coordinates in another color space.
conjugate
The conjugate of a complex number
a + b iis
a-b i.
DCT Acronym for the discrete cosine transform. See
“Discrete Cosine Transform” in Chapter 7.
decimation A geometric transform operation that shrinks the
source image.