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:
Aug. 16, 2016
Filed:
Mar. 09, 2011
Miyako Hotta, Hitachi, JP;
Masanori Miyoshi, Mito, JP;
Wataru Ito, Nishitokyo, JP;
Hitachi Kokusai Electric Inc., Tokyo, JP;
Abstract
It is an object of the present invention to provide a monitoring system that captures and inputs video images of a crowd with a surveillance camera for detecting normal and/or various abnormal states. The monitoring system (MS) comprises: a video image input means () that captures and inputs the video images of the crowd; an optical-flow calculating means () that calculates optical flows from the video images captured at different times; a judgment-block setting means () that sets judgment blocks on a surveillance area of each video image, each judgment block serving as a unit to be judged about an abnormality; an optical-flow attribute counting means () that counts an attribute of optical flows generated in each judgment block; a normality-evaluating-index calculating means () that calculates, from the counted attribute of the optical flows, an evaluation value of a normality-evaluating index for evaluating a normality of the judgment block; an abnormal-state judging means () that judges, from the evaluation value of the normality-evaluating index, the abnormal state of the judgment block; and an output means () that outputs a result of the judgment made by the abnormal-state judging means onto the video image.