4.2.2
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.
Options: Dynamic Threshold, 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.
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.
4-8
Summary of Contents for DF-0902H
Page 1: ...High Speed Document Scanner User s Manual Regulatory model DF 0902H Avision Inc ...
Page 34: ...Error Diffusion Image 4 10 ...
Page 37: ...User s Manual Normal Photo Document Threshold 230 Normal Photo Document Threshold 230 4 13 ...
Page 48: ...The Compression tab dialog box 4 24 ...
Page 50: ...The Color Dropout dialog box 4 26 ...
Page 52: ...Remove Blue Threshold 20 Background 255 Remove Blue Threshold 20 Background Level 210 4 28 ...
Page 63: ...User s Manual Detection Area Outside the Range Box Top 3 Bottom 7 4 39 ...
Page 89: ...6 2 Roller ADF Pad ...
Page 95: ...6 8 5 Reinsert the paper feed roller cover and snap it into place 6 Close the ADF cover ...
Page 104: ...User s Manual 9 3 Normal Rotated 4 60 Transport Timeout 4 33 Ultrasonic Detection 4 40 ...