NOTE
•When you make custom gamma correction settings, all settings related to the brightness of the scanned image will be set automatically.
•The settings you can specify are as follows:
- Select
Select the side and color for the custom setting.
y 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.
y The gamma correction value, Gamma Curve Graph, and sample image color are interlinked.
y Clicking a point in the Gamma Curve Graph with your mouse changes the gamma curve and color of the sample image to match that point.
y You can also move the gamma curve by dragging it with the mouse.
- [Freehand]
The output value for a particular input value in the gamma table can be specified with the mouse.
y Click any point in the Gamma Curve Graph to set that point as an output value.
y Drag the mouse on the Gamma Curve Graph to set the output value according to the mouse movement.
• Custom gamma correction settings can be exported as gamma table data, and data exported earlier can be imported again. For details, see the scanner driver help.
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Image Contour Adjustment
This section describes the procedure for adjusting the contours of the scanned image.
Under Windows
1In the ISIS/TWAIN driver properties dialog box, click the [Image processing] tab → adjust the [Edge emphasis] slider to adjust the contours of the scanned image.
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