Fraunhofer-gesellschaft Zur Foerderung Der Angewandten Forschung E.v.

American Sterilizer Company

Arndt Bussmann

Bedrich J Hosticka

Werner Brockherde

Olaf Schrey

Juergen Huppertz

Christian Nitta

Ryan Klebba

Markus Schwarz

Dai Dang

Sajeev Krishnan

Thorsten Heimann

Carsten Warneke

Ralf Jeremias

Dynamic systems and methods for fixed noise pattern calibrations and image corrections are provided. Imaging devices may be calibrated via the system by adjusting an imaging sensor exposure to acquire one or more black images. A global average pixel value is calculated to accumulate pixel values per column of the acquired image. The calculated global average pixel value is then saved as offset imaging data. An average pixel value per column of the imaging data based on the accumulated pixel values may also be calculated, and stored as offset imaging data. A correction matrix may be recomposed based on the offset imaging data and used for calibrating the imaging sensor, and for creating corrected images in or near real time.

Dynamic fixed pattern noise calibrations

In a method for imaging, a plurality of image sensor elements is used, which generate different output signal values when using different exposure times. For each image sensor element, an image signal value is generated by generating a first output signal value when using a first exposure time and an associated second output signal value using a second exposure time. If the first output signal value does not exceed a threshold value associated thereto, the image signal value is calculated using a first calculating rule on the basis of the first output signal value. If the first output signal value exceeds the threshold value, the image signal value is calculated using at least a second calculating rule on the basis of at least the second output signal value. By the calculating rules, the first and second output signal values are shifted relative to each other and adjusted such that no detectable discontinuity occurs between an image signal value still calculated according to the first calculating rule and an image signal value already calculated according to the second calculating rule.

Method and device for imaging using several exposure times

Growing community of inventors

Wesel, Germany

Arndt Bussmann