Blind color

Blind colors are colors that cannot be read by a scanner .

Many scanners can be specified that a certain color should not be read. This turns out to be e.g. B. in the text recognition of forms that are highlighted in color, as practical. Is a form z. B. highlighted in red, you choose red as the blind color. The scanner then scans the original with a red lamp. This only digitizes information that is not printed in red.