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. 29, 2003
Filed:
Feb. 02, 2000
Applicant:
Inventors:
Ajay Divakaran, Denville, NJ (US);
Kadir A. Peker, Paterson, NJ (US);
Huifang Sun, Cranbury, NJ (US);
Assignee:
Mitsubishi Electric Research Laboratories, Inc., Cambridge, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N 7/12 ; H04N 1/104 ; H04N 1/102 ;
U.S. Cl.
CPC ...
H04N 7/12 ; H04N 1/104 ; H04N 1/102 ;
Abstract
A method describes motion activity in a video sequence. A motion activity matrix is determined for the video sequence. A threshold for the motion activity matrix is determined. Connected regions of motion vectors at least equal to the threshold are identified and measured for size. A histogram of the distribution of the sizes of the connected areas is constructed for the entire video sequence. The histogram is normalized to characterize the spatial distribution of the video sequence in a motion activity descriptor.