Patents by Inventor Tom Duff

Tom Duff 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).

  • Incremental frustum-cache acceleration of line integrals for volume rendering
    Patent number: 7262768
    Abstract: A method for rendering participating media effects is disclosed. At least one object having a surface is defined and a lattice, aligned with a camera, is also defined that encompasses the at least one object. A volumetric line integral is computed from the camera to lattice points in a neighborhood of a particular point on the surface of the object to obtain a value. The obtained value is filtered to obtain a volumetric line integral value for the particular point on the surface. Additionally, the set of values may be cached in memory and may be used in computing additional volumetric line integrals when applicable. The set of values determined for lattice points is filtered to determine the volumetric line integral value for a particular point on the surface.
    Type: Grant
    Filed: December 9, 2003
    Date of Patent: August 28, 2007
    Inventors: Adam Woodbury, Rick Sayre, Tom Lokovic, Tom Duff
  • Incremental frustum-cache acceleration of line integrals for volume rendering
    Publication number: 20040155880
    Abstract: A method for rendering participating media effects is disclosed. At least one object having a surface is defined and a lattice, aligned with a camera, is also defined that encompasses the at least one object. A volumetric line integral is computed from the camera to lattice points in a neighborhood of a particular point on the surface of the object to obtain a value. The obtained value is filtered to obtain a volumetric line integral value for the particular point on the surface. Additionally, the set of values may be cached in memory and may be used in computing additional volumetric line integrals when applicable. The set of values determined for lattice points is filtered to determine the volumetric line integral value for a particular point on the surface.
    Type: Application
    Filed: December 9, 2003
    Publication date: August 12, 2004
    Applicant: Pixar
    Inventors: Adam Woodbury, Rick Sayre, Tom Lokovic, Tom Duff
  • Incremental frustum-cache acceleration of line integrals for volume rendering
    Patent number: 6677947
    Abstract: A method for rendering participating media effects is disclosed. At least one object having a surface is defined and a lattice, aligned with a camera, is also defined that encompasses the at least one object. A volumetric line integral is computed from the camera to lattice points in a neighborhood of a particular point on the surface of the object to obtain a value. The obtained value is filtered to obtain a volumetric line integral value for the particular point on the surface. Additionally, the set of values may be cached in memory and may be used in computing additional volumetric line integrals when applicable. The set of values determined for lattice points is filtered to determine the volumetric line integral value for a particular point on the surface.
    Type: Grant
    Filed: July 20, 2001
    Date of Patent: January 13, 2004
    Assignee: Pixar
    Inventors: Adam Woodbury, Rick Sayre, Tom Lokovic, Tom Duff
  • Incremental frustum-cache acceleration of line integrals for volume rendering
    Publication number: 20030016219
    Abstract: A method for rendering participating media effects is disclosed. At least one object having a surface is defined and a lattice, aligned with a camera, is also defined that encompasses the at least one object. A volumetric line integral is computed from the camera to lattice points in a neighborhood of a particular point on the surface of the object to obtain a value. The obtained value is filtered to obtain a volumetric line integral value for the particular point on the surface. Additionally, the set of values may be cached in memory and may be used in computing additional volumetric line integrals when applicable. The set of values determined for lattice points is filtered to determine the volumetric line integral value for a particular point on the surface.
    Type: Application
    Filed: July 20, 2001
    Publication date: January 23, 2003
    Inventors: Adam Woodbury, Rick Sayre, Tom Lokovic, Tom Duff