Operation Manual

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User Guide – IRIScan Executive 4
4.4 The Color Dropout Tab
Color Dropout tab allows you to filter out a color channel (red, green, or blue). For example, if you are
scanning a document with a red watermark, you can choose to filter out the red channel so the scanned
image just shows the text and not the red watermark. Removing colors from the scan might reduce the
scan file size and improve optical character recognition (OCR) result.
Note:
Color dropout only applies to gray and black and white scans.
4.4.1 Entering the RGB Values
You may specify the color to be removed by entering the RGB (Red, Blue and Green) value respectively.
Click the Clear button to reset your color.