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Setting Threshold
You can sharpen text in a document or reduce show-through in newspapers by adjusting the threshold level
via
(Threshold) in ScanGear (scanner driver)'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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Содержание CanoScan LiDE 220
Страница 20: ...Safety Guide Safety Precautions Regulatory and Safety Information 20 ...
Страница 27: ...Placing Items Place the Item on the Platen Items You Can Place How to Place Items 27 ...
Страница 38: ...Scanning Scanning from a Computer Scanning Using the Scanner Buttons 38 ...
Страница 53: ...5 Select Select Source according to the items to be scanned 6 Select Auto scan for Paper Size then click OK 53 ...
Страница 97: ...Defaults You can restore the settings in the displayed screen to the default settings 97 ...
Страница 106: ...Defaults You can restore the settings in the displayed screen to the default settings 106 ...
Страница 141: ...141 ...
Страница 202: ...4 When a confirmation appears click Yes 5 When uninstallation is complete click Complete ScanGear is deleted 202 ...
Страница 211: ...Other Scanning Methods Scanning with WIA Driver Scanning Using the Control Panel Windows XP Only 211 ...
Страница 214: ...6 Click Scan When scanning is completed the scanned image appears in the application 214 ...
Страница 230: ...Troubleshooting Search Each Function Problems with Scanning Problems with Installation Downloading 230 ...
Страница 231: ...Problems with Scanning Problems with Scanning Scan Results Not Satisfactory Software Problems 231 ...
Страница 255: ...Software Problems The E mail Client You Want to Use Does Not Appear in the Screen for Selecting an E mail Client 255 ...