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:
Feb. 25, 1992
Filed:
Aug. 09, 1990
Rainer Bermbach, Mainz-Laubenheim, DE;
Gerhard Doenges, Heidenrod-Kemel, DE;
Georg Geus, Wiesbaden, DE;
Cornelius Koch, Wiesbaden, DE;
Heimann GmbH, , DE;
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.