Patent · US Active

Anomaly detection of radiological signatures

US8779370B2 · kind B2 · utility

3Cited by

1References

20Claims

0Family size

Assignee

AUSTRALIAN NUCLEAR SCIENCE AND TECHNOLOGY ORGANISATION · AU

Inventors

Mark Reinhard · Heidelberg, DE
David Boardman · Eremerang, AU

Key dates

Filing date	Nov 11, 2010
Grant date	Jul 15, 2014
Priority date	—
Expiry date	Apr 8, 2031

Classification

Technology area (CPC G)Physics
CPC primaryG06V20/54
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

Described herein is a method for determining the presence or absence of anomalous radioactive materials in a target in a detection zone. In the method, a target gamma ray spectrum is obtained from the target and a target data set is prepared from the target gamma ray spectrum. This data set comprise a plurality of intensity values, each intensity value being associated with an energy bin representing a gamma ray energy or range of gamma ray energies in the target gamma ray spectrum. The target data set is then pre-processed and projected into a principal component space which contains a pre-processed data library projected into the principal component space. A distance is then determined between the projected pre-processed target data set and one or more clusters of the projected pre-processed data library in the principal component space and this distance is compared with a predetermined threshold distance so as to determine if an anomalous radioactive material is present in the target.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.