Cirrus Logic CS485 Especificaciones descargar pdf (Pagina 297)

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

iis

a-b

DCT Acronym for the discrete cosine transform. See

“Discrete Cosine Transform” in Chapter 7.

decimation A geometric transform operation that shrinks the

source image.

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Cirrus Logic CS485 Especificaciones Pagina 297