Patent ID: 9251419
Filing Date: 2016-02-02
CPC Classification: G01C,G06K

Claim Text:
1. A method of selecting Ground Control Points (GCPs) for a geodetic network, comprising: receiving more than one image of a given area on the ground; detecting interest points in each image and generating an interest point descriptor and a geo-location for each interest point; clustering the interest points based on geo-location to create clusters of interest points; comparing the interest point descriptors for the interest points within each cluster; grouping at least some of the interest points based on the comparison; and selecting certain groups as GCPs; wherein the selected GCPs are from a set of images where every image in the set overlaps at least a portion of another image in the set, each one of the plurality of GCPs having a geo-coordinate where the GCP is located in the image and each one of the plurality of GCPs having an error covariance that exist between that one of the plurality of GCPs and every other GCP, wherein the plurality of GCPs form a geodetic network; and further including receiving additional information about the geo-coordinate of one or more of the GCPs; and after receiving the additional information, updating the geo-coordinate and error covariance of each GCP in the network, wherein the updating is performed without inline image processing.