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:
Jan. 28, 2014
Filed:
Jul. 26, 2011
Bolan Jiang, San Diego, CA (US);
Charles Wheeler Sweet, Iii, San Diego, CA (US);
Prasun Choudhury, San Diego, CA (US);
Dheeraj Ahuja, San Diego, CA (US);
Bolan Jiang, San Diego, CA (US);
Charles Wheeler Sweet, III, San Diego, CA (US);
Prasun Choudhury, San Diego, CA (US);
Dheeraj Ahuja, San Diego, CA (US);
QUALCOMM Incorporated, San Diego, CA (US);
Abstract
A reference patch of an unknown environment is generated on the fly for positioning and tracking. The reference patch is generated using a captured image of a planar object with two perpendicular sets of parallel lines. The planar object is detected in the image and axes of the world coordinate system are defined using the vanishing points for the two sets of parallel lines. The camera rotation is recovered based on the defined axes, and the reference patch of at least a portion of the image of the planar object is generated using the recovered camera rotation. The reference patch can then be used for vision based detection and tracking. The planar object may be detected in the image as sets of parallel lines or as a rectangle.