Patents by Inventor Marc Drieux

Marc Drieux 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).

  • Video encoding method
    Patent number: 7149250
    Abstract: The present invention relates to an encoding method processing video object planes (VOPs) of I, P or B type and including a dynamic allocation of said VOPs. According to said method, for each input frame a preliminary forward motion estimation is carried out between current and previous frames. Current and previous motion fields are then used to evaluate a coherence factor, expressed as connected to the sums of local differences within current and previous motion field. According to the value of the coherence factor with respect to an empirically determined threshold, a decision is finally taken on the type of the frame to be coded.
    Type: Grant
    Filed: October 13, 2003
    Date of Patent: December 12, 2006
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Marc Drieux, Françoise Groliere, Daniel Snook
  • Video encoding method
    Publication number: 20050259732
    Abstract: The present invention relates to an encoding method processing video object planes (VOPs) of I, P or B type and including a dynamic allocation of said VOPs. According to said method, for each input frame a preliminary forward motion estimation is carried out between current and previous frames. Current and previous motion fields are then used to evaluate a coherence factor, expressed as connected to the sums of local differences within current and previous motion field. According to the value of the coherence factor with respect to an empirically determined threshold, a decision is finally taken on the type of the frame to be coded.
    Type: Application
    Filed: October 13, 2003
    Publication date: November 24, 2005
    Applicant: Koninkljke Philips Electronics N.V.
    Inventors: Marc Drieux, Francoise Groliere, Daniel Snook