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:
Nov. 20, 2007
Filed:
Apr. 12, 2002
Shunsuke Kamijo, Kawasaki, JP;
Masao Sakauchi, Yokohama, JP;
Katsushi Ikeuchi, Yokohama, JP;
Fujitsu Limited, Kawasaki, JP;
The Foundation for the Promotion of Industrial Science, Tokyo, JP;
Abstract
A feature amount of an inter-mobile unit relative movement are detected as an observation amount by an observation amount detecting section, time series of the observation amounts are stored as an observation series into a storage sectionto calculate a similarity of the observation series to a predetermined collision observation series by a classification section. A determination sectiondetermines to be a collision accident if, in a case where the similarity is larger than a predetermined value, a mobile unit associated with the similarity is at rest in a stoppage prohibition area set in a storage sectionand another mobile unit is moving, and to be a mobile unit failure if collision determination conditions except for the similarity are met. By consisting of not only a first scalar obtained by quantizing a relative velocity vector between mobile units but also a second scalar obtained by quantizing a relative position vector between mobile units as the observation amount, a relative movement between mobile units is classified in more detail. A mobile unit is tracked in units of block by a mobile unit tracking sectionto discriminate overlapped mobile units in pictures.