Operation Manual

42
Adjust Image tab
Smoothen color image
This option is selected by default. It smoothens out differences in intensity, creating a greater contrast
between the text and the background. Sometimes smoothening is the only way to separate text from a
colored background.
Dither Remove
For image files containing text in colored background and scanned in black and white, there is dithering
(i.e. black and white spots) in the scanned black and white file, that influences the OCR quality.
Due to the fact that during the dithering process a part of the image information is lost, the resulting image
after the dithering removal will not be the same as the original. However, the resulting image would
improve the OCR quality.
This tool can be used only on black & white images.
Fast Binarization (Readiris Corporate)
When you selected Fast Binarization in the From File options or in the Scanner Settings, the same
option is selected in the Adjust Image menu. This option is useful when scanning or opening many image
files at the same time, as it increases the processing speed considerably.
When this option is selected, you cannot manually adjust the Brightness and Contrast options however.
Clear this option to be able to adjust them manually.