Patent · US Expired

Apparatus for the transillumination of articles with a fan-shaped radiation beam

US5091924A · kind A · utility

192Cited by

10References

4Claims

0Family size

Assignee

Heimann GmbH · DE

Inventors

Rainer Bermbach · Mainz, DE
Gerhard Doenges · Nastätten, DE
Georg Geus · Wiesbaden, DE
Cornelius Koch · Hochheim, DE

Key dates

Filing date	Aug 9, 1990
Grant date	Feb 25, 1992
Priority date	—
Expiry date	Aug 9, 2010

Classification

Technology area (CPC G)Physics
CPC primaryG01V5/20
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

An apparatus is disclosed for examining containers and/or vehicles at an airport for impermissible contents, such as explosives, weapons, drugs, smuggled goods and the like. To improve the ability to identify such items in the article or vehicle under inspection, an image processor is provided having a computer to which the signals of the radiation detectors are supplied. The computer uses these signals to calculate a radiation silhouette of the articles. A memory is provided in which a reference image of the article is stored. A comparison circuit is supplied with the signals from the computer and from the memory, so that a differential image derived from the calculated radiation silhouette from the computer and from the reference image is displayed on a monitor, connected to the comparison circuit. Differences between the cureent image and the reference image can thereby be easily observed.

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