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:
Mar. 21, 2017
Filed:
Nov. 04, 2015
Mitsubishi Electric Research Laboratories, Inc., Cambridge, MA (US);
Hassan Mansour, Boston, MA (US);
Caglayan Dicle, Cambridge, MA (US);
Dong Tian, Boxborough, MA (US);
Mouhacine Benosman, Boston, MA (US);
Anthony Vetro, Arlington, MA (US);
Mitsubishi Electric Research Laboratories, Inc., Cambridge, MA (US);
Abstract
A method and system determines flows by first acquiring a video of the flows with a camera, wherein the flows are pedestrians in a scene, wherein the video includes a set of frames. Motion vectors are extracted from each frame in the set, and a data matrix is constructed from the motion vectors in the set of frames. A low rank Koopman operator is determined from the data matrix and a spectrum of the low rank Koopman operator is analyzed to determine a set of Koopman modes. Then, the frames are segmented into independent flows according to a clustering of the Koopman modes.