Patents by Inventor Mark N. Billinghurst

Mark N. Billinghurst 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).

  • Tracking a surface in a 3-dimensional scene using natural visual features of the surface
    Patent number: 7987079
    Abstract: A facility for determining the 3-dimensional location and orientation of a subject surface in a distinguished perspective image of the subject surface is described. The subject surface has innate visual features, a subset of which are selected. The facility uses the location of the selected visual features in a perspective image of the subject surface that precedes the distinguished perspective image in time to identify search zones in the distinguished perspective image. The facility searches the identified search zones for the selected visual features to determine the 2-dimensional locations at which the selected visual features occur. Based on the determined 2-dimensional locations, the facility determines the 3-dimensional location and orientation of the subject surface in the distinguished perspective image.
    Type: Grant
    Filed: March 11, 2008
    Date of Patent: July 26, 2011
    Assignee: Artoolworks, Inc.
    Inventors: Mark N. Billinghurst, Hirokazu Kato
  • TRACKING A SURFACE IN A 3-DIMENSIONAL SCENE USING NATURAL VISUAL FEATURES OF THE SURFACE
    Publication number: 20080232645
    Abstract: A facility for determining the 3-dimensional location and orientation of a subject surface in a distinguished perspective image of the subject surface is described. The subject surface has innate visual features, a subset of which are selected. The facility uses the location of the selected visual features in a perspective image of the subject surface that precedes the distinguished perspective image in time to identify search zones in the distinguished perspective image. The facility searches the identified search zones for the selected visual features to determine the 2-dimensional locations at which the selected visual features occur. Based on the determined 2-dimensional locations, the facility determines the 3-dimensional location and orientation of the subject surface in the distinguished perspective image.
    Type: Application
    Filed: March 11, 2008
    Publication date: September 25, 2008
    Inventors: Mark N. Billinghurst, Hirokazu Kato
  • Tracking a surface in a 3-dimensional scene using natural visual features of the surface
    Patent number: 7343278
    Abstract: A facility for determining the 3-dimensional location and orientation of a subject surface in a distinguished perspective image of the subject surface is described. The subject surface has innate visual features, a subset of which are selected. The facility uses the location of the selected visual features in a perspective image of the subject surface that precedes the distinguished perspective image in time to identify search zones in the distinguished perspective image. The facility searches the identified search zones for the selected visual features to determine the 2-dimensional locations at which the selected visual features occur. Based on the determined 2-dimensional locations, the facility determines the 3-dimensional location and orientation of the subject surface in the distinguished perspective image.
    Type: Grant
    Filed: October 22, 2003
    Date of Patent: March 11, 2008
    Assignee: ARToolWorks, Inc.
    Inventors: Mark N. Billinghurst, Hirokazu Kato
  • Tracking a surface in a 3-dimensional scene using natural visual features of the surface
    Publication number: 20040136567
    Abstract: A facility for determining the 3-dimensional location and orientation of a subject surface in a distinguished perspective image of the subject surface is described. The subject surface has innate visual features, a subset of which are selected. The facility uses the location of the selected visual features in a perspective image of the subject surface that precedes the distinguished perspective image in time to identify search zones in the distinguished perspective image. The facility searches the identified search zones for the selected visual features to determine the 2-dimensional locations at which the selected visual features occur. Based on the determined 2-dimensional locations, the facility determines the 3-dimensional location and orientation of the subject surface in the distinguished perspective image.
    Type: Application
    Filed: October 22, 2003
    Publication date: July 15, 2004
    Inventors: Mark N. Billinghurst, Hirokazu Kato