Patent ID: 6380539
Filing Date: 2002-04-30
Classification: H04N

Abstract:
A method for scanning an image on a substrate containing defects which uses a plurality of sensors arranged in groups, wherein a first group is behind a first filter material selective to a first color of light and infrared light, and a second group is behind a second filter material selective to a second different color of light and infrared light, said method comprising:illuminating the image at a first scan time with a first light source functionally free of infrared light; sensing light of the first color with the first group of sensors to generate a first color image, and light of the second color with the second group of sensors to generate a second color image; illuminating the image at a second scan time with a second light source containing infrared light; sensing infrared light with at least one of the first or second group of sensors to generate an infrared image; and generating from the first color image, second color image, and infrared image, a corrected color image substantially free of the defects.