Patents by Inventor Hartmut Boessmann

Hartmut Boessmann has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Calibration element for calibrating the magnification ratio of a camera, and a calibration method
    Patent number: 7952625
    Abstract: A calibration element (1) serves for calibrating the magnification ratio of a camera (3). The calibration element (1) has at least one calibration region (4) in which at least one perforation (5) or indentation is provided. The perforation (5) or indentation can be detected by the camera. The calibration element (1) is sufficiently slight in the calibration region (4) that the detection of an upper edge or lower edge of the perforation (5) or indentation produces only negligible differences. In order to determine the dependence of the magnification ratio on the thickness, the calibration element (1) additionally has at least one support foot (8), whose length (9) is selected in such a way as thereby to produce a variation in the measured magnification ratio of the camera image that can be evaluated.
    Type: Grant
    Filed: January 21, 2009
    Date of Patent: May 31, 2011
    Assignee: Texmag GmbH Vertriebsgesellschaft
    Inventor: Hartmut Boessmann
  • Caliberation element for calibrating the magnification ratio of a camera, and a calibration method
    Publication number: 20090185038
    Abstract: A calibration element (1) serves for calibrating the magnification ratio of a camera (3). The calibration element (1) has at least one calibration region (4) in which at least one perforation (5) or indentation is provided. The perforation (5) or indentation can be detected by the camera. The calibration element (1) is sufficiently slight in the calibration region (4) that the detection of an upper edge or lower edge of the perforation (5) or indentation produces only negligible differences. In order to determine the dependence of the magnification ratio on the thickness, the calibration element (1) additionally has at least one support foot (8), whose length (9) is selected in such a way as thereby to produce a variation in the measured magnification ratio of the camera image that can be evaluated.
    Type: Application
    Filed: January 21, 2009
    Publication date: July 23, 2009
    Inventor: Hartmut Boessmann