Patent ID: 7127085
Filing Date: 2006-10-24
Classification: G06K,G06T

Abstract:
1. An image processing method for use in a computer system having a database for storing a reference image, control point chips (CP chips) of the reference image, and auxiliary data including geographic coordinates, incidence angles and orientation angles of the reference image and the CP chips, comprising: (a) a CP chip extraction step of, when a target image and auxiliary data including location information, incidence angle information and orientation angle information of the target image are inputted, finding out a region on the reference image corresponding to a region including the target image by using the auxiliary data, selecting the region found on the reference image as a control region, and searching a CP chip included in the control region; (b) an image matching step of searching matching points of the target image for control points within the CP chip extracted from the step (a), wherein the step (b) comprises the sub steps of: (c) a mismatching point removing step of removing mismatching points among matching results obtained from the step (b), the removing step comprising using RANSAC algorithm and the camera model; and (d) a precise image correction step of arranging the target image into a geographic coordinate system using the matching results obtained after performing the step (c).