Patents by Inventor Heinz Schwartzel

Heinz Schwartzel 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).

  • Correction of the gaze direction for a videophone
    Patent number: 5499303
    Abstract: A method for correcting the gaze direction of persons in a digital image where an angular error between the gaze direction and the camera axis is determined. The pupils of both eyes in the image are then segmented and displaced within the image plane. Areas which have become free are filled in using the color of the eyeball. Any interfering edges produced are attenuated in a subsequent processing step (e.g., by using a low-pass filter). The method is also applicable for a sequence of images over time.
    Type: Grant
    Filed: July 27, 1993
    Date of Patent: March 12, 1996
    Assignee: Siemens Aktiengesellschaft
    Inventors: Eckart Hundt, Thomas Riegel, Heinz Schwartzel, Manfred Ziegler