User’s Manual
4-12
4.3.2
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.
Options: Dynamic Threshold,
Dynamic Threshold (AD), Fixed
Processing, Halftone 1~5, Error
Diffusion
.
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.
Dynamic
Threshold (AD):
Selecting
Dynamic Threshold (AD)
to perform
the enhanced mode of the Dynamic
Threshold feature. However, using this
mode may slow down your scanning
speed.
Sensitivity of Dynamic Threshold
Occasionally your scanned image may
contain small dots or speckles. To remove
these spots, increase the sensitivity value
by moving the bar to the right. The value
ranges from 1 to 30. The default is 20.
Summary of Contents for DF-1002S
Page 1: ...Bookedge Scanner User s Manual Regulatory model DF 1002S Avision Inc ...
Page 27: ...User s Manual 4 5 ...
Page 36: ...User s Manual 4 14 Error Diffusion Image Dynamic Threshold Dynamic Threshold AD ...
Page 39: ...User s Manual 4 17 Normal Photo Document Threshold 230 Normal Photo Document Threshold 230 ...
Page 51: ...User s Manual 4 30 The Compression tab dialog box ...
Page 53: ...User s Manual 4 32 ...
Page 57: ...User s Manual 4 36 The Color Dropout dialog box ...
Page 117: ...User s Manual 8 7 Figure 8 6 ADF Roller ADF Pad ...