Camera arrangement for image detection, x-ray system and method for balancing and operating

US9300936B2 · kind B2 · utility

Assignee

• Fraunhofer-Gesellschaft zur förderung der angewandten Forschung e.V. · DE

Inventors

• Peter Schmitt · Erlangen, DE
• Guenther Kostka · Erlangen, DE
• Rolf Behrendt · Dormitz, DE
• Andreas Jobst · Nuremberg, DE
• Matthias Kube · Ergolding, DE

Key dates

• Filing date: Feb 7, 2014
• Grant date: Mar 29, 2016
• Expiry date: Mar 5, 2034

Classification

• Technology area (CPC G): Physics
• CPC primary: G06T5/70
• WIPO field: Audio-visual technology
• WIPO sector: Electrical engineering

Abstract

A camera arrangement for image detection includes radiation-sensitive sensor elements arranged to record a common object plane in offset fields of view, a balancer and a shading corrector. The balancer is implemented, for balancing the sensor elements, to post-process for each sensor element a sensor signal of the respective sensor signal n by means of balancing information determined in balancing and stored, so that a variation of the intensity I of incoming radiation in the respective field of view leads to a change of the respective post-processed sensor signal according to a desired mapping function Fn(anI), the mapping functions Fn( ) of all factory-balanced sensor elements being identical, and an being a sensor-individual factor. The shading corrector is implemented on the basis of a recording generated by means of the camera arrangement with the sensor elements, to change the sensor element-individual factors an so that intensity differences of the recording are balanced across the common object plane.