User Guide

ACDSee™ Pro User Guide
274
CMYK Color model that uses cyan, magenta, yellow, and black (key) as its
primary colors.
codec Abbreviation for technology that compresses and decompresses
data. A codec compresses files for storage or for transport over a
network such as the Internet. You can use the same codec to
expand files to their original size so that they can be played or
viewed on a computer.
color cast Changes the hue of an image while keeping the saturation and
brightness intact. For example, many digital cameras produce pic-
tures with a slightly blue color cast. ACDSee includes a tool that
removes an unwanted color cast.
color channel value Contains all pixel information for a single color. A grayscale image
has one channel, while an RGB image has three channels. You can
adjust RGB values when editing a color.
color gamut Range of colors that a device such as a printer or monitor can pro-
duce or display.
color management Process of adjusting your computer settings so that the color out-
put from your printer matches the colors you see on your monitor.
color space There are two types of color spaces: device-independent or device-
dependent. A device-independent color space, such as RGB,
describes all possible colors. A device-dependent color space
describes the subset of colors (from the device-independent color
space) that a particular device can reproduce. Device-dependent
color spaces are used to map colors between devices (for example,
from a monitor to a printer) to ensure that colors are reproduced
accurately.
command line Usually refers to the MS-DOS prompt, at which a user can enter
commands in a specific syntax to start an application with certain
options enabled or disabled.
compression Process that converts data to a storage format requiring less space
than the original data.
contact sheet Physical or digital page that contains a series of small images, usu-
ally in a grid format.
contrast Measure of an image's color and brightness differences.