Definitions for "Descreening"
Removal of halftone dot patterns on printed material during or after scanning by defocusing the image. This eliminates moire patterning and color shifts.
Removal of half-tone dot patterns during or after scanning printed material by defocussing the image to avoid Moire patterning (see 'Moire patterns') and colour shifts during subsequent half-tone reprinting.
Software functions build in to some scanning software applications to reduce or eliminate moiré patterning (unattractive stripes or diamond patterns appearing on the scan).