User Manual

TWAIN Help24
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Threshold sets the color level for converting an image to line art, which can
adjust the quality of line art image or eliminate unwanted dots in the documents
to improve OCR accuracy.
The following options are available from the drop-down list:
·
Basic
You may adjust the
Threshold value
either way:
·
Slide the thumb of
the scroll bar to the right or left
to decrease or increase
the Threshold value
.
·
Click the arrow signs on the right and left ends.
The current value is shown to right of the scroll bar.
·
Advanced
You may adjust the
Radius / Weight
value
either way:
·
Slide the thumb of
the scroll bar to the right or left
to decrease or increase
the value
.
·
Click the arrow signs on the right and left ends.
The current value is shown to right of the scroll bar.
·
Auto
This option
will have TWAIN automatically
apply optimal threshold value to your
scanned images.
Default
Clicking the Default button on the lower right corner
revert the settings to its
original values and discard all adjustments you have made.