Canon 3624B002 User Manual - Page 120

Contrast, Enable Back Side Brightness] Check Box, Custom] Check Box, Select, Input method

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• When the [Auto] check box is selected, the slider automatically selects a brightness level to be used for automatic adjustment. Contrast Adjusts the contrast of images to be scanned. [Enable Back Side Brightness] Check Box If the brightness of the front and back of the document pages is different, select this check box to adjust only the brightness of the back side. [Enable Back Side Contrast] Check Box If the contrast of the front and back of the document pages is different, select this check box to adjust only the contrast of the back side. ■ [Gamma Settings] Dialog Box Use the [Gamma Settings] dialog box to adjust the gamma correction value. Chapter 8 ISIS/TWAIN Driver Settings Select Select the side and color for custom setting. Hint The color bar and color of the sample image are changed to show the specified color. Input method Select the setting method for gamma correction. [Factor] Move the slider to the left or right to adjust the gamma correction factor between 0.2 and 5.0. Hint • The gamma correction value, Gamma Curve Graph, and sample image color are interlinked. When you adjust one of these items, the others are also adjusted automatically. • Clicking at a point in the Gamma Curve Graph with your mouse changes the gamma curve and color of the sample image to match that point. • You can also move the gamma curve by dragging it with the mouse. [Custom] Check Box Select this check box to set custom gamma correction. [Free hand] The output value for a particular input value in the gamma table can be specified with the mouse. 8-15

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8-15
Chapter 8
ISIS/TWAIN Driver Settings
•
When the [Auto] check box is selected, the slider
automatically selects a brightness level to be used for
automatic adjustment.
Contrast
Adjusts the contrast of images to be scanned.
[Enable Back Side Brightness] Check Box
If the brightness of the front and back of the document
pages is different, select this check box to adjust only the
brightness of the back side.
[Enable Back Side Contrast] Check Box
If the contrast of the front and back of the document pages
is different, select this check box to adjust only the contrast
of the back side.
■
[Gamma Settings] Dialog Box
Use the [Gamma Settings] dialog box to adjust the gamma
correction value.
[Custom] Check Box
Select this check box to set custom gamma correction.
Select
Select the side and color for custom setting.
Hint
The color bar and color of the sample image are changed to
show the specified color.
Input method
Select the setting method for gamma correction.
[Factor]
Move the slider to the left or right to adjust the gamma
correction factor between 0.2 and 5.0.
Hint
•
The gamma correction value, Gamma Curve Graph, and
sample image color are interlinked. When you adjust one of
these items, the others are also adjusted automatically.
•
Clicking at a point in the Gamma Curve Graph with your
mouse changes the gamma curve and color of the sample
image to match that point.
•
You can also move the gamma curve by dragging it with the
mouse.
[Free hand]
The output value for a particular input value in the gamma
table can be specified with the mouse.