An image reading apparatus which can eliminate a difference of the MTF occurring due to the matching of the positions of the pixels and can perform an accurate color discrimination and can obtain a high image quantity. An image on an original is read through color separation filters of a plurality of...http://www.google.com.tw/patents/US5495350?utm_source=gb-gplus-share專利 US5495350 - Color image processor which corrects spatial and frequency characteristics of color components
