Setting Threshold
You can sharpen text in a document or reduce show-through in newspapers by adjusting the threshold level
via
(Threshold) in ScanGear's
Advanced Mode
tab.
Note
• This function is available when
Color Mode
is
Black and White
.
• Click
Defaults
to reset all adjustments in the current window.
Adjusting 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.
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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Summary of Contents for CanoScan LiDE 120
Page 20: ...Safety Guide Safety Precautions Regulatory and Safety Information 20 ...
Page 27: ...Placing Items Place the Item on the Platen Items You Can Place How to Place Items 27 ...
Page 36: ...Scanning Scanning from a Computer Scanning Using the Scanner Buttons 36 ...
Page 70: ...Defaults You can restore the settings in the displayed screen to the default settings 70 ...
Page 85: ...Defaults You can restore the settings in the displayed screen to the default settings 85 ...
Page 120: ...120 ...
Page 135: ...135 ...
Page 219: ...Problems with Scanning Problems with Scanning Scan Results Not Satisfactory 219 ...