User’s Manual4.4.2 Other Color Dropout OptionsAdvanced Processing provides two options that can adjustyour scanned image in the best optimal result.FilterThresholdThis value is used to determine the colorwhich will be dropped out. A lower value willdrop more of the selected color out, while ahigher value will leave more of the selectedcolor in.BackgroundLevelThe pixel which is higher than thebackground value will be adjusted to thelightest point. Adjust the value for both theFilter Threshold and Background Level toproduce the best optimal result.Example, slightly adjusting the background value makesyour text more clear.Original4-27
