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:
Apr. 24, 2012
Filed:
Sep. 04, 2009
Ralf Behrens, Hirschaid, DE;
Thilo Hannemann, Erlangen, DE;
Ralf Behrens, Hirschaid, DE;
Thilo Hannemann, Erlangen, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
An image intensifier system has an image converter tube to convert incident x-ray radiation into visible light and a digital camera system optically downstream of the image converter tube. The camera system has an image sensor to convert the incident, visible light into digital images, and an electronic image processing unit is provided for post-processing of the digital images. In such a system and a method for correcting image distortion errors that occur therein, characteristic data of a magnetic field present in the image converter tube are determined with the aid of a magnetic field probe arranged within the image converter tube or in its environment, an imaging error resulting from the presence of the magnetic field is quantitatively defined using the determined characteristic data, one or more parameters of a correction map leading to the correction of the imaging error are determined based on this, and the correction map that is established in this way is applied to the digital images in the electronic image processing unit.