4 the color dropout tab, 1 color dropout selection, The color dropout tab -25 – Avision IS25 manual User Manual

Page 69: Color dropout selection -25

5.4 The Color Dropout Tab

5.4.1 Color Dropout Selection

Color Dropout tab allows you to drop either of the red, blue,

or green color in your scanned image. If your image

contains red color watermark or background, choose the R

(Red) channel then any red watermark or background will

be removed. This feature is used to sharpen your text when

using OCR (Optical Character Recognition) software.
The “Custom” option allows you to specify your desired color

to be removed by entering its RGB (Red, Green, and Blue)

value respectively.

Tolerance: Specify the allowable color range to be removed

for the color you selected. Specified range: 1 ~ 100

The large the numeric value, the wider the color dropout

range is.

Note that this function supports only black & white and gray
images. Therefore, be sure to choose any black & white or
gray image type while applying this function.

5-25