Avision FB2100_Green (BF-0505) - Manual (Page 24)

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3.2.2 OTHER IMAGE OPTIONS
Binarization This is the process of converting a
grayscale or color image to a bi-tonal
image. There are several different
methods of performing this conversion.
Two of the options are Dynamic
Threshold and Fixed Processing.
Dynamic
Threshold: Selecting
Dynamic Threshold allows the scanner
to dynamically evaluate each document
to determine the optimal threshold value
to produce the highest quality image.
This is used to scan mixed document
containing faint text, shaded background,
or color background with a single setting.
If Dynamic Threshold is selected,
Threshold, Brightness, and Contrast are
not available.
Fixed Processing: Used for
black-and-white and other high contrast
documents. A single level is set to
determine the black-and-white transition.
The threshold is programmable over the
entire density range. Fixed Processing
sets Contrast to 0. If Fixed Processing
is selected, Contrast is not available.
Quality When you choose “Gray” to be your
image type, the “Binarization” item will
be changed to “Quality” and its option
includes “High” and “Normal”. Choose
“High” to enhance your image and make
your image look brighter.