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. 16, 2013
Filed:
Jul. 29, 2009
Mark F. Cunningham, Oak Ridge, TN (US);
Lorenzo Fabris, Knoxville, TN (US);
Timothy F. Gee, Oak Ridge, TN (US);
Frezghi H. Ghebretati, Jr., Sunnyvale, CA (US);
James S. Goddard, Knoxville, TN (US);
Thomas P. Karnowski, Knoxville, TN (US);
Klaus-peter Ziock, Clinton, TN (US);
Mark F. Cunningham, Oak Ridge, TN (US);
Lorenzo Fabris, Knoxville, TN (US);
Timothy F. Gee, Oak Ridge, TN (US);
Frezghi H. Ghebretati, Jr., Sunnyvale, CA (US);
James S. Goddard, Knoxville, TN (US);
Thomas P. Karnowski, Knoxville, TN (US);
Klaus-peter Ziock, Clinton, TN (US);
UT-Battelle, LLC, Oak Ridge, TN (US);
Abstract
Multiple homography transformations corresponding to different heights are generated in the field of view. A group of salient points within a common estimated height range is identified in a time series of video images of a moving object. Inter-salient point distances are measured for the group of salient points under the multiple homography transformations corresponding to the different heights. Variations in the inter-salient point distances under the multiple homography transformations are compared. The height of the group of salient points is estimated to be the height corresponding to the homography transformation that minimizes the variations.