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On-screen Manual
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Scanning Guide
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Correcting Images and Adjusting Colors with ScanGear (Scanner Driver)
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Setting Threshold
Setting Threshold
The brightness of color and grayscale images is expressed in a value between 0 and 255. However, in
creating black and white images, all colors are mapped to either black (0) or white (255). "Threshold" is
the borderline value that determines a color as black or white. By adjusting the threshold level, you can
sharpen text in a document or reduce show-through in newspapers.
This function is available when Color Mode is Black and White.
In ScanGear (scanner driver)'s Advanced Mode tab, click
(Threshold).
Note
Click Defaults to reset all adjustments in the current window.
Adjusting Threshold
Move
(Slider) to the right to increase the threshold value and thus increase the black areas. Move the
slider to the left to decrease the value and thus increase the white areas. You can also enter a value (0 to
255).
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Page 215 of 334 pages
Setting Threshold
Summary of Contents for 4207B002
Page 65: ...Page top Page 65 of 334 pages Classifying Images into Categories ...
Page 105: ...Related Topic Scanning Film Page top Page 105 of 334 pages Film Screen Scan Import Window ...
Page 127: ...Page top Page 127 of 334 pages Send via E mail Dialog Box ...
Page 189: ...Advanced Mode Tab Page top Page 189 of 334 pages Scanning in Advanced Mode ...
Page 292: ...Page top Page 292 of 334 pages Scanner Does Not Work ...