Patent 8977520 was granted and assigned to Pictometry International Corp. on March, 2015 by the United States Patent and Trademark Office.
A set of instructions stored on at least one computer readable medium for running on a computer system. The set of instructions includes instructions for identifying line segments of a roof that is preferably displayed within a geo-referenced image, instructions for determining three-dimensional information of the line segments including position, orientation and length of the line segments preferably utilizing the geo-referenced image, and instructions for classifying, automatically, at least one of the line segments as one of a plurality of predefined roof elements utilizing at least one of the relative position and orientation of the line segments.