Patents by Inventor Yihua Xu

Yihua Xu 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: 7671893
    Abstract: Interactive multi-view video presents a new type of video capture system. Many video cameras are allocated to capture an event from various related locations and directions. The captured videos are compressed in control PCs and are sent to a server in real-time. The compressed video can also be transcoded through an off-line compression approach to further reduce the data amount. Users can subscribe to a new type of service that allows users to connect to the servers and receive multi-view videos interactively.
    Type: Grant
    Filed: July 27, 2004
    Date of Patent: March 2, 2010
    Assignee: Microsoft Corp.
    Inventors: Jiang Li, Yihua Xu, Jianguang Lou, Hua Cai, Shipeng Li, Jian Wang, Heung-Yeung Shum
  • Patent number: 7477784
    Abstract: A method and apparatus for performing EIC pattern analysis is described. Pattern feature extraction is performed followed by EIC symbol segmentation. A system may later use the result from the pattern analysis to determine a location of a captured image in relation to a larger array of EIC symbols.
    Type: Grant
    Filed: March 1, 2005
    Date of Patent: January 13, 2009
    Assignee: Microsoft Corporation
    Inventors: Jian Wang, Liyon Chen, Yihua Xu, Yingnong Dang, Zhouchen Lin
  • Patent number: 7142197
    Abstract: The universal input device provides a common user interface for a variety of different computing platforms including printed documents. Using the present system, one may use the universal input device to control various computing devices as well as capture handwritten electronic ink and have the electronic ink be associated with new or stored documents. The universal input device can be identified by a specific identification in order to allow for multiple users to operate on a document and/or within an application program simultaneously or not. An off-set optical system with infrared illumination handles perspective and helps detect positional encoding which can be covered by existing ink under common visible light illumination.
    Type: Grant
    Filed: January 7, 2004
    Date of Patent: November 28, 2006
    Assignee: Microsoft Corporation
    Inventors: Jian Wang, Chunhui Zhang, Yihua Xu, An Xu
  • Publication number: 20060204101
    Abstract: A method and apparatus for performing EIC pattern analysis is described. Pattern feature extraction is performed followed by EIC symbol segmentation. A system may later use the result from the pattern analysis to determine a location of a captured image in relation to a larger array of EIC symbols.
    Type: Application
    Filed: March 1, 2005
    Publication date: September 14, 2006
    Applicant: Microsoft Corporation
    Inventors: Jian Wang, Liyon Chen, Yihua Xu, Yingnong Dang, Zhouchen Lin
  • Publication number: 20060023066
    Abstract: Interactive multi-view video presents new types of video capture systems, video formats, video compression algorithms, and services. Many video cameras are allocated to capture an event from various related locations and directions. The captured videos are compressed and are sent to a server in real-time. Users can subscribe to a new type of service that allows users to connect to the servers and receive multi-view videos interactively. In addition to conventional playing controls, users can manipulate controls to the camera positions and orientations, select viewing directions and enjoy special effects such as a sweeping effect and a freeze-and-rotate effect, and so on. Interactive multi-view video provides a brand-new experience in watching events.
    Type: Application
    Filed: August 19, 2004
    Publication date: February 2, 2006
    Applicant: Microsoft Corporation
    Inventors: Jiang Li, Yihua Xu, Jianguang Lou, Hua Cai
  • Publication number: 20060023073
    Abstract: Interactive multi-view video presents a new type of video capture system. Many video cameras are allocated to capture an event from various related locations and directions. The captured videos are compressed in control PCs and are sent to a server in real-time. The compressed video can also be transcoded through an off-line compression approach to further reduce the data amount. Users can subscribe to a new type of service that allows users to connect to the servers and receive multi-view videos interactively.
    Type: Application
    Filed: July 27, 2004
    Publication date: February 2, 2006
    Applicant: Microsoft Corporation
    Inventors: Jiang Li, Yihua Xu, Jianguang Lou, Hua Cai, Shipeng Li, Jian Wang, Heung-Yeung Shum
  • Publication number: 20040140965
    Abstract: The universal input device provides a common user interface for a variety of different computing platforms including printed documents. Using the present system, one may use the universal input device to control various computing devices as well as capture handwritten electronic ink and have the electronic ink be associated with new or stored documents. The universal input device can be identified by a specific identification in order to allow for multiple users to operate on a document and/or within an application program simultaneously or not. An off-set optical system with infrared illumination handles perspective and helps detect positional encoding which can be covered by existing ink under common visible light illumination.
    Type: Application
    Filed: January 7, 2004
    Publication date: July 22, 2004
    Applicant: Microsoft Corporation
    Inventors: Jian Wang, Chunhui Zhang, Yihua Xu, An Xu