Epson Macintosh - Manual (Page 73)

Gray Balance
An EPSON TWAIN software setting that lets you adjust the
grayness of any area of an image. You can remove color casts
and discoloration to make the grays in an image more neutral.
Grayscale
The measure of grayness of any area of an image. When an
image is scanned, the gray level of each pixel is determined.
Halftone
An image type which simulates grayscale by varying the sizes
of the dots printed.
Halftoning
A process of converting continuous tones into digital data so
that the output data simulates the tones.
Highlight
The lightest portion of an image.
Image Type
The way an image will be scanned or reproduced. EPSON
TWAIN provides Pixel Depth, Halftone, Dropout, and Quality
settings to adjust the scanned image you are creating. You can
also define your own image type settings.
Interface
The connection between or among computer devices.
JPEG
Joint Photographic Experts Group. JPEG is standard file format
for Lossy data compression and is supported by many
applications.
Line Art
An image made up of lines and solids with no grays.
Lossy
A data compression system that intentionally discards (or
loses) some data from the original image.
Midtone
The tonal value of a dot, located approximately halfway
between the highlight value and the shadow value.
Term Glossary 3