Patents by Inventor Ludwig Eckert

Ludwig Eckert 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).

  • Patent number: 6907138
    Abstract: The invention relates to a method for analyzing properties of a surface by taking an image scene with a camera, wherein at least two images are taken with an illumination with directed and/or diffused light, wherein the image information of the single images is converted into digital signals, and subsequently a three-dimensional image is determined from the digital signals in computer-aided manner. Further, the image relates to an image-taking device for performing this method, comprising a video camera and a lighting appliance being associated with the video camera, the lighting appliance comprising a first lighting system generating diffused light and a second lighting system generating directed light, and a controller through which the first and the second lighting systems are controllable electronically and independently from one another.
    Type: Grant
    Filed: June 15, 1998
    Date of Patent: June 14, 2005
    Assignee: Invision Technologies AG
    Inventors: Peter Klaus Hoffman, Ludwig Eckert, Sebastian Tölg, Marianne Andres, Robert Husemann