The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 17, 2012
Filed:
Jun. 12, 2008
Bogdan Calin Mihai Matei, Monmouth Junction, NJ (US);
Supun Samarasekera, Princeton, NJ (US);
Janet Yonga Kim, Morrisville, PA (US);
Charles Fielding Finch Karney, Princeton, NJ (US);
Harpreet Singh Sawhney, West Windsor, NJ (US);
Rakesh Kumar, West Windsor, NJ (US);
Bogdan Calin Mihai Matei, Monmouth Junction, NJ (US);
Supun Samarasekera, Princeton, NJ (US);
Janet Yonga Kim, Morrisville, PA (US);
Charles Fielding Finch Karney, Princeton, NJ (US);
Harpreet Singh Sawhney, West Windsor, NJ (US);
Rakesh Kumar, West Windsor, NJ (US);
SRI International, Menlo Park, CA (US);
Abstract
A method for extracting a 3D terrain model for identifying at least buildings and terrain from LIDAR data is disclosed, comprising the steps of generating a point cloud representing terrain and buildings mapped by LIDAR; classifying points in the point cloud, the point cloud having ground and non-ground points, the non-ground points representing buildings and clutter; segmenting the non-ground points into buildings and clutter; and calculating a fit between at least one building segment and at least one rectilinear structure, wherein the fit yields the rectilinear structure with the fewest number of vertices. The step of calculating further comprises the steps of (a) calculating a fit of a rectilinear structure to the at least one building segment, wherein each of the vertices has an angle that is a multiple of 90 degrees; (b) counting the number of vertices; (c) rotating the at least one building segment about an axis by a predetermined increment; and (d) repeating steps (a)-(c) until a rectilinear structure with the least number of vertices is found.