Genius VividPro II, Руководство пользователя

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Chapter IV. The TWAIN Interface
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Text (for printing)
300
Text (for faxing)
200
Text (for OCR)
300
Black and white or gray image
150
Color image or photo
100
These values are only recommendations and
should be raised if the resulting image is
rough or you need to view fine details.
See the Scanning Tips at the end of this
chapter for more information.
Brightness This is the amount of light
that is concentrated onto a document while it
is being scanned. Raising the brightness by
sliding the button located between the arrows
increases the amount of white in an image,
making it appear more washed out.
Lowering the brightness may help scans of
light or faint text become more readable.
However, we recommend adjusting the
brightness (richness) of colors in an image in
the Advanced window.
Contrast The higher the contrast, the
sharper the image. The lower the contrast,
the more blurry an image will be. Contrast
adjusts the tonal range of an image by
lowering mid-tone values and increasing
values for high and low tones. For example,
use contrast to eliminate noise or shading on