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. 01, 2014
Filed:
Jul. 19, 2012
Benjamin Mohr, St. Louis Park, MN (US);
Yunqian MA, Plymouth, MN (US);
Michael Ray Elgersma, Plymouth, MN (US);
John B. Mckitterick, Columbia, MD (US);
Benjamin Mohr, St. Louis Park, MN (US);
Yunqian Ma, Plymouth, MN (US);
Michael Ray Elgersma, Plymouth, MN (US);
John B. McKitterick, Columbia, MD (US);
Honeywell International Inc., Morristown, NJ (US);
Abstract
A method for navigation comprises constructing a current map that includes two-dimensional or three dimensional representations of an area, detecting one or more edge features on the current map, and generating a first fine-edge map based on the edge features. The method further comprises retrieving a historical map that includes two-dimensional or three dimensional representations of the area, detecting one or more edge features on the historical map, and generating a second fine-edge map based on the edge features. Thereafter, a coarse version of the current map is generated from the first fine-edge map, and a coarse version of the historical map is generated from the second fine-edge map. The coarse versions of the current and historical maps are then correlated to determine a first position and orientation. The first fine-edge map is then correlated with the second fine-edge map to determine a second, more accurate, position and orientation.