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

Andreas Teuner

Bedrich J Hosticka

Michael Schanz

Nenad Stevanovic

Matthias Hillebrand

Markus Schwarz

Su-Birm Park

Jos&eacute; Santos Conde

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

A device for seat supervision in motor vehicles has a pulsed monochromatic light source for the short-time illumination of a supervised space. An image sensor array (ISA) is also provided for recording an image of the supervised space. The ISA is provided with a global electronic shutter unit which permits the illumination time of the ISA to be adjusted independently of a readout clock of the ISA. A synchronization unit for synchronizing the operation of the pulsed laser source and the ISA is provided. Also provided is a control unit for controlling the light source and the ISA so as to create a first image of the supervised space during illumination of the same at a first time and to create a second image of the supervised space without illumination of the same at a second time. Finally, a unit for creating a difference image from the first and second images is also provided.

Device and method for seat supervision in motor vehicles

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Essen, Germany

Andreas Teuner