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When you want to enhance a particular color
Specify the color (red, green, blue) to be enhanced in the color drop-
out settings on the [Image processing] tab, and that color will be
enhanced in the scanned image.
Click [Image processing] and specify the color (red, blue, or green) in
[Color dropout] in the dialog box that appears to enhance that color in
the document.
When you want to enhance contours in images
Adjust the edge emphasis setting on the [Image processing] tab.
Click [Image processing] and adjust the edge emphasis settings in the
dialog box which appears.