Patents by Inventor Alexander Sawchuk

Alexander Sawchuk 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).

  • Patent number: 7787009
    Abstract: An apparatus and method for 3D interaction with an autostereoscopic display are presented. A motion tracking system may include video cameras that track a 3D motion of a user within an interaction volume defined by the fields-of-view of the video cameras, as the user moves a light source or other optical marker or an anatomical region of the user within the interaction volume. The motion tracking system may generate 3D tracking data containing position information about the 3D motion. An imaging system may create a virtual scene by tracing 3D virtual objects in virtual space, using the position information in the 3D tracking data. The imaging system may synthesize a plurality of views of the virtual scene, and interlace the plurality of views to generate an interlaced image to drive the autostereoscopic display and to be displayed thereon.
    Type: Grant
    Filed: May 9, 2005
    Date of Patent: August 31, 2010
    Assignee: University of Southern California
    Inventors: Zahir Y. Alpaslan, Alexander A. Sawchuk
  • Publication number: 20060012675
    Abstract: An apparatus and method for 3D interaction with an autostereoscopic display are presented. A motion tracking system may include video cameras that track a 3D motion of a user within an interaction volume defined by the fields-of-view of the video cameras, as the user moves a light source or other optical marker or an anatomical region of the user within the interaction volume. The motion tracking system may generate 3D tracking data containing position information about the 3D motion. An imaging system may create a virtual scene by tracing 3D virtual objects in virtual space, using the position information in the 3D tracking data. The imaging system may synthesize a plurality of views of the virtual scene, and interlace the plurality of views to generate an interlaced image to drive the autostereoscopic display and to be displayed thereon.
    Type: Application
    Filed: May 9, 2005
    Publication date: January 19, 2006
    Inventors: Zahir Alpaslan, Alexander Sawchuk
  • Patent number: 4351589
    Abstract: Arrangements and methods are described employing input optical intensity to output spatial position mapping, for performing optical computing or logic processing functions. An electro-optical device which receives discrete input optical object beams of different intensity levels and a separate readout optical beam, diffracts portions of the readout optical beam to unique spatial positions in two dimensional space, each portion as a function of the intensity of individual discrete input beams or of combinations of the intensities of the input beams. A spatial filter having discrete apertures at selected ones of the unique spatial positions transmits the selected diffracted optical outputs for implementing logic or computing functions.
    Type: Grant
    Filed: April 8, 1980
    Date of Patent: September 28, 1982
    Assignee: Hughes Aircraft Company
    Inventors: Pierre H. Chavel, Alexander A. Sawchuk, Bernard H. Soffer, Timothy C. Strand, Armand R. Tanguay, Jr.