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.:

US 9135507 B1

PDF
Full Text
Expired
Date of Patent:
Sep. 15, 2015

Filed:

Jul. 11, 2013
Applicant:

National Central University, Taoyuan County, TW;

Inventors:

Liang-Chien Chen, Taoyuan County, TW;

Yun-Jou Lin, Changhua County, TW;

Assignee:

NATIONAL CENTRAL UNIVERSITY, Jhongli, Taoyuan County, TW;

Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G06K 9/00 (2006.01); G06T 17/05 (2011.01);
U.S. Cl.
CPC ...
G06K 9/00637 (2013.01); G06T 17/05 (2013.01);
Abstract

A method for searching a building roof facet and reconstructing a roof structure line, in which the searching is performed automatically and without limitation of how slope of the roof facet, and the building structure line is constructed through aerial imagery. At first, lidar point clouds on the roof are extracted to compose a roof facet by using coplanarity analysis, and the roof is differentiated to a possible flat roof and a pitched roof. An optimal roof facet is obtained by analyzing lidar point clouds to overcome the low pitched facet issue. A relationship of a roof facet on a 2-dimensional space is analyzed to ascertain an area of a roof structure line. An initial boundary is generated. Line detection is performed on the images and a roof structure line segment is composed. All the structure line segments are used to reconstructing a 3-dimensional building pattern in object space.


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Chen, Liang-Chien. (2015). Method for searching a roof facet and constructing a building roof structure line (U.S. Patent No. 9135507). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9135507

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