Patents by Inventor Philippe Desgranges

Philippe Desgranges 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).

  • Gradient free shading for volume rendering using shadow information
    Patent number: 8884959
    Abstract: Disclosed is a method and apparatus for computing the shading of a volume. A slice of the volume is rendered along a half-angle direction that is between a light direction and a view direction. A slice of the volume is then rendered along a light direction to assimilate shadow information of the slice in a shadow buffer. The shadow buffer is bled orthogonal to the light direction to shade the slice.
    Type: Grant
    Filed: May 18, 2006
    Date of Patent: November 11, 2014
    Assignee: Siemens Aktiengesellschaft
    Inventors: Philippe Desgranges, Klaus Engel
  • Fast ambient occlusion for direct volume rendering
    Patent number: 8184119
    Abstract: A method of direct volume rendering is provided comprising combining ambient occlusion volumes terms from a plurality of different filtered volumes using filters with different radii. During an ambient occlusion computation phase, the method obtains ambient occlusion terms from a plurality of different filtered volumes and, combining the ambient occlusion terms from the plurality of different filtered volumes into a composite ambient volume occlusion. During a subsequent volume rendering phase, data acquired from the subject is processed using the composite ambient volume occlusion to obtain a shaded rendition of an image of the subject.
    Type: Grant
    Filed: June 19, 2006
    Date of Patent: May 22, 2012
    Assignee: Siemens Medical Solutions USA, Inc.
    Inventors: Philippe Desgranges, Klaus Engel
  • Fast ambient occlusion for direct volume rendering
    Publication number: 20070013696
    Abstract: A method of direct volume rendering is provided comprising combining ambient occlusion volumes terms from a plurality of different filtered volumes using filters with different radii. During an ambient occlusion computation phase, the method obtains ambient occlusion terms from a plurality of different filtered volumes and, combining the ambient occlusion terms from the plurality of different filtered volumes into a composite ambient volume occlusion. During a subsequent volume rendering phase, data acquired from the subject is processed using the composite ambient volume occlusion to obtain a shaded rendition of an image of the subject.
    Type: Application
    Filed: June 19, 2006
    Publication date: January 18, 2007
    Inventors: Philippe Desgranges, Klaus Engel
  • GRADIENT FREE SHADING FOR VOLUME RENDERING USING SHADOW INFORMATION
    Publication number: 20070002047
    Abstract: Disclosed is a method and apparatus for computing the shading of a volume. A slice of the volume is rendered along a half-angle direction that is between a light direction and a view direction. A slice of the volume is then rendered along a light direction to assimilate shadow information of the slice in a shadow buffer. The shadow buffer is bled orthogonal to the light direction to shade the slice.
    Type: Application
    Filed: May 18, 2006
    Publication date: January 4, 2007
    Applicant: SIEMENS CORPORATION RESEARCH INC
    Inventors: Philippe Desgranges, Klaus Engel