Patents by Inventor Frederick Kaufman

Frederick Kaufman 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).

  • Methods and system for measuring three dimensional spatial coordinates and for external camera calibration necessary for that measurement
    Patent number: 6256099
    Abstract: The present invention relates to methods and system for measuring three dimensional spatial coordinates and for external camera calibration necessary for that measurement. A simple pattern of light is projected onto a surface and used as a photogrammetric target. Images of the simple pattern are captured by two or more cameras, and processed by a computer provided with software using conventional algorithms to identify homologous points. Either, these points are used to calculate the external calibration of the cameras, or they are used in conjunction with previously calculated external camera calibration in order to calculate three dimensional spatial coordinates on the surface of an object to be measured.
    Type: Grant
    Filed: October 25, 1999
    Date of Patent: July 3, 2001
    Inventors: Frederick Kaufman, Jeffrey Brian Chow, Robert Newton James, Curtis Earle Lang