Infrared cleaning is a technique used by some Motion picture film scanner, film scanners and flatbed scanners to reduce or remove the effect of dust and scratches upon the finished scan. It works by collecting an additional infrared channel from the scan at the same position and resolution as the three visible color channels (red, green, and blue). The infrared channel, in combination with the other channels, is used to detect the location of scratches and dust. Once located, those defects can be corrected by scaling or replaced by inpainting. COUNT 4
QSN1 What is the name of the technique used in scanners to minimize the effects of dust and scratches? ANS1 Infrared cleaning QSN2 Along with red and blue, what is the third visible color channel? ANS2 green QSN3 Along with replacement via inpainting, what procedure is used in infrared cleaning to remove the effect of scratches and dust? ANS3 scaling QSN4 Along with the visible light channels, what channel is used to locate scratches and dust in scanners? ANS4 infrared