SCANNING METHOD AND DEVICE FOR OBTAINING COLOUR IMAGES

摘要

In a method of scanning an image on an original (60), an optical sensor (44) comprising sensor elements for each of a number of basic colours is used to generate pixel values of rows of pixels of the scanned image. The sensor elements are used to generate grey scale pixel values representing different parts of the image. A first sensor element for each of the basic colours is used to generate pixel values of odd pixels of rows on the original, and a second sensor element for each of the basic colours is used to generate pixel values of even pixels of rows of the original. Each colour pixel value is generated mainly on the basis of a pixel value of at least one of the first sensor elements and pixel values of at least two of the second sensor elements for adjacent pixels.