Image Enhancement  
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You may set the conditions to enhance the scanned images in this page.  
 
GB_TWAIN_Preference_Image enhancement  
 
Remove Background  
Tick this check box to remove the colored background of the scanned documents. This feature is used to adjust the remove condition of colored background. The higher the value, the greater the effect will be. Slide the thumb of the scroll bar to the right or left, and the current value is shown above the scroll bar.  
 
 
Denoise  
Tick this check box to remove noises from the scanned images. This feature is used to adjust the reduce condition of noises. The higher the value, the more noises will be reduced. Slide the thumb of the scroll bar to the right or left, and the current value is shown to right of the scroll bar.  
 
 
Character Enhancement  
Tick this check box to enhance text characters in the scanned documents. This feature is not available when Black & White is selected as Scan Mode. This feature is used to adjust the enhancement value of text characters. The higher the value, the sharper the text character will be. Slide the thumb of the scroll bar to the right or left, and the current value is shown to right of the scroll bar.