Patent ID: 6784922
Filing Date: 2004-08-31
Classification: G01C,G06T

Abstract:
A method for the image scanning of an area, in particular the earth's surface, by a scanner, in particular an infrared line scanner, which is moved over the area at different heights and at different speeds, the method comprising the following steps:a) determining an overscan factor in accordance with the height and the speed of the scanner over the scanned area; b) positioning a first image (image0) in a centered manner; c) determining an offset vector (dxi, dyi) for subsequently scanned images (imagei, imagei+i, . . . ) in accordance with their image offset (&Dgr;x, &Dgr;y); d) aligning the images with one another with the aid of the offset vectors; and e) averaging the image content of the images which are aligned with one another in image areas with an overlap defined by the overscan factor.