Abstract: The invention relates to a method and a device for checking print products of the same kind, more particularly printed sheets of paper of the same kind, which are transported by a conveying device. For this purpose, during a teach-in phase, test images are recorded at a plurality of points on the print product by means of a digital camera. The test images recorded, or parts thereof, are analyzed with respect to their characteristic information, and the test image having the most distinct characteristic information is selected as the reference image. For the purpose of checking print products of the same kind, the subsequent print products of the same kind are checked by recording at least one image at a position corresponding to the reference image and by comparing it with the image data of the reference image.

Abstract: The invention relates to a method for detecting objects in which a light pattern is beamed by a plurality of transmitting modules into an observation zone, the transmitting modules being spaced to each other, in which light radiated back from the observation zone is detected by at least one spatially resolving detector unit, in which a surface contour of an object located in the observation zone is determined on the basis of the detected light according to the light section principle, in which a maximum spatial resolution is caused by the intervals at which the transmitting modules are spaced from each other.

Abstract: The invention relates to a method for detecting objects in which a light pattern is beamed by a plurality of transmitting modules into an observation zone, the transmitting modules being spaced to each other, in which light radiated back from the observation zone is detected by at least one spatially resolving detector unit, in which a surface contour of an object located in the observation zone is determined on the basis of the detected light according to the light section principle, in which a maximum spatial resolution is caused by the intervals at which the transmitting modules are spaced from each other.

Abstract: The invention relates to a method and a device for checking print products of the same kind, more particularly printed sheets of paper of the same kind, which are transported by a conveying device. For this purpose, during a teach-in phase, test images are recorded at a plurality of points on the print product by means of a digital camera. The test images recorded, or parts thereof, are analyzed with respect to their characteristic information, and the test image having the most distinct characteristic information is selected as the reference image. For the purpose of checking print products of the same kind, the subsequent print products of the same kind are checked by recording at least one image at a position corresponding to the reference image and by comparing it with the image data of the reference image.