Patents by Inventor Peter Leipa

Peter Leipa 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).

  • Accurate boolean operations for subdivision surfaces and relaxed fitting
    Patent number: 6989830
    Abstract: An apparatus, method, and computer readable storage medium for accurately performing Boolean operations on subdivision surfaces. The present invention produces a base mesh which subdivides into a surface which represents the Boolean operation of two subdivision surfaces. The method includes (a) chopping pieces of two Catmull-Clark bases meshes which correspond to pieces of a Boolean surface computed from limit surfaces of the two base meshes; (b) creating new edges on the chopped pieces to create quadrilaterals and triangles; and (c) merging the chopped pieces with the new edges into a Boolean base mesh which approximates the Boolean surface.
    Type: Grant
    Filed: July 1, 2002
    Date of Patent: January 24, 2006
    Assignee: Alias Systems Corp.
    Inventors: Eric Joel Stollnitz, Peter Leipa