Canon imageFORMULA DR-M140II User Manual page 39

When you want to make lines and text in scanned images
thicker or thinner
Drag the [Character Emphasis] slider in the [Image processing] tab to
make lines and text in the scanned images thicker or thinner.
When you want to reverse black and white in scanned
images
Select [Reverse Image] on the [Image control] tab sheet. This outputs
scanned images with black and white reversed.
When you want to enhance text that is difficult to read
because of factors such as the background of the
scanned document
Select [Active Threshold], [Advanced Text Enhancement] or
[Advanced Text Enhancement II] for the color mode setting on the
[Basic] tab. The background behind the text is removed or processed
so that the text is emphasized for better readability.
• [Active Threshold] is intended for batch processing various kinds of
documents at once, such as those with thin (light) text or stains. For
example, you can batch process documents such as photocopies at
once. Brightness-related properties are automatically adjusted
based on the text and background of the whole image, enabling
consistent reproduction of light characters and removal of
background stains.
• Advanced Text Enhancement is suitable for a document with a light
background color or a document with a non-uniform background
(such as a pattern). If the background is uniform, it is removed where
it surrounds the text, and if the background is non-uniform, it is
processed to enhance text readability.
• Advanced Text Enhancement II is suitable for scanning a document
with a uniform background color and light text and background. If the
background is non-uniform, such as a pattern, the background may
not be able to be completely removed and the text may become
difficult to read. If necessary, you can make the text in scanned
images easier to read by adjusting the contrast on the [Brightness]
tab.
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