Patents by Inventor Stella Yuan

Stella Yuan 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).

  • HMD calibration with direct geometric modeling
    Patent number: 10198865
    Abstract: An optical see-through (OST) head-mounted display (HMD) uses a calibration matrix having a fixed sub-set of adjustable parameters within all its parameters. Initial values for the calibration matrix are based on a model head. A predefined set of incremental adjustment values is provided for each adjustable parameter. During calibration, the calibration matrix is cycled through its predefined incremental parameter changes, and a virtual object is projected for each incremental change. The resultant projected virtual object is aligned to a reference real object, and the projected virtual object having the best alignment is identified. The setting values of the calibration matrix that resulted in the best aligned virtual object are deemed the final calibration matrix to be used with the OST HMD.
    Type: Grant
    Filed: June 16, 2015
    Date of Patent: February 5, 2019
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Irina Kezele, Margarit Simeonov Chenchev, Stella Yuan, Simon Szeto, Arash Abadpour
  • HMD Calibration with Direct Geometric Modeling
    Publication number: 20160012643
    Abstract: An optical see-through (OST) head-mounted display (HMD) uses a calibration matrix having a fixed sub-set of adjustable parameters within all its parameters. Initial values for the calibration matrix are based on a model head. A predefined set of incremental adjustment values is provided for each adjustable parameter. During calibration, the calibration matrix is cycled through its predefined incremental parameter changes, and a virtual object is projected for each incremental change. The resultant projected virtual object is aligned to a reference real object, and the projected virtual object having the best alignment is identified. The setting values of the calibration matrix that resulted in the best aligned virtual object are deemed the final calibration matrix to be used with the OST HMD.
    Type: Application
    Filed: June 16, 2015
    Publication date: January 14, 2016
    Inventors: Irina Kezele, Margarit Simeonov Chenchev, Stella Yuan, Simon Szeto, Arash Abadpour