Image Emphasis; Image Processing - Fujitsu fi-4750C Operator's Manual

Halftone processing
Any method used to reproduce a photograph which includes a shade as an image composed of dots, namely,
a binary image. Dithering and error diffusion processing are examples of halftone processing.
Hexadecimal
A base-16 numbering system (also commonly referred to as hex numbers). Since a base-16 system requires
16 digits, numbers 0 through 9 and letters A through F are used. It is convenient to express binary numbers
in hexadecimal because fewer digits are required.

Image emphasis

Density is decreased for lighter but not completely white areas adjacent to black areas. Weakening this
emphasis eliminates spot noise or produces softened images.

Image processing

An image is read with specified parameters.
Interface
The connection that allows communication from one part of a system to another. For example, electrical signals
are transferred between the computer and scanner over an interface cable.
Inversion (Reverse-image reading)
In reverse-image reading, data is changed from black to white and vice versa.
IPC preset mode
While reading binary images, it is necessary to set the scanner according to the quality of the sheet to be read.
In this mode, these settings can be performed in advance by corresponding each setting to a pattern number.
IPC-4D
Image processing option of this scanner.
IRAS
Initialization of the hardware.
Landscape orientation
A document is transported and read with the long side vertical to the moving direction.
Letter size
A standard paper size used in the U.S.A. and other countries. Paper size is 8-1/2 x 11 inches.