G-4
Glossary
GIF (Graphics Interchange Format)
A standard developed by CompuServe
for bitmap graphics of up to 256 colors
and used for posting photographic
images on the Internet or intranet pages;
rarely used for professional printing.
gradient
A smooth transition between two
different colors or between two shades of
a color.
Graphics Device Interface
See GDI.
Graphics Interchange Format
See GIF.
gravure
A printing technology that uses an
etched cylinder that has been immersed
in ink. The ink that remains in the
etched areas is applied to the paper. The
non-etched surfaces of the cylinder are
non-printing areas.
halftoning
A method for representing an original
continuous tone image using a pattern of
dots, lines or other patterns.
HSB
A color model where each color is
represented by its hue, saturation, and
brightness components; supported by
most color applications.
ICC profile
An industry standard color profile
format developed by the International
Color Consortium (ICC) that describes
the color capabilities, including the
gamut, of a color device based on the
differences between an ideal and the
current device. The ideal is often
provided by the manufacturer as a color
reference file. ICC profiles are
implemented on Mac OS computers in
ColorSync and on Windows 95/98,
Windows NT 4.0, and Windows 2000
computers in Image Color Matching
(ICM). The Fiery 3850C color
management system, ColorWise,
supports ICC profiles.
imagesetter
Raster-based film output device; a high-
resolution laser output device that writes
bitmapped data onto photosensitive
paper or film.
JPEG
A graphics file format defined by the
Joint Photographic Experts Group
committee of International Standards
Organization (ISO); a standard for
digital compression of still image
graphic data.
metamerism
Phenomenon in which two colors
composed of different combinations of
light wavelengths appear identical under
a specific light source, but may look
different under other light sources. The
colors are called “metamers.”
