Patents by Inventor Catherine Guede

Catherine Guede 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).

  • Method and device for bordering, in digital optical image formation, a subject incrusted on a background
    Patent number: 5293235
    Abstract: For every point of an image in a special effects digital optical image formation method and apparatus the value of a border key signal is obtained by conducting a search for the maximum value of the subject's key signal in an analysis window centered on this point. The subject's key signals of the points in the window are delayed so as to make them simultaneous and are supplied to the same comparator which may be controlled in order to inhibit some of its inputs so as to define, for example, a circular analysis window; such a process makes it possible to obtain a regular border.
    Type: Grant
    Filed: March 6, 1992
    Date of Patent: March 8, 1994
    Assignee: Thomson-Broadcast
    Inventors: Catherine Guede, Jean-Luc Grimaldi