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

Markus Schwarz

Bedrich J Hosticka

Werner Brockherde

Olaf Schrey

Michael Schanz

Juergen Huppertz

Christian Nitta

Andreas Teuner

Arndt Bussmann

Su-Birm Park

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

For detecting a change between pixel signals which chronologically follow one another, a current pixel value is first deteced and, subsequently, the difference between the detected pixel signal and a reference value is determined. Depending on the difference, it is determined whether there is a change of the detected pixel value in comparison with the preceding pixel values, the reference signal being produced from two or more pixel values preceding the detected pixel value.

Method and device for detecting a change between pixel signals which chronologically follow one another

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Duisburg, Germany

Markus Schwarz