Abstract: A camera device for localizing an optical marker is provided that has at least one image sensor and a control and evaluation unit. A first camera channel for recording first image data having the optical marker is formed from the image sensor and the control and evaluation unit. The control and evaluation unit is configured to locate the optical marker in the first image data and to determine a first pose of the optical marker relative to the camera device. A second camera channel for recording second image data having the optical marker is formed from the image sensor and the control and evaluation unit. The control and evaluation unit is configured to locate the optical marker in the second image data, to determine a second pose of the optical marker relative to the camera device, and to compare the first pose and the second pose with one another.

Abstract: A rotary cylinder is mounted opposite abutment means, and has a metal strip upstandingly mounted on the cylinder, with an exposed edge for cutting out a portion of said material. In order to automatically eject the cutout portions, at least one resilient ejector is mounted on the cylinder, within and adjacent the cutting strip. Advantageously, the ejector is provided in form of telescoping, outwardly spring-loaded shells, mounted on the cylinder to extend generally radially of the cylinder.