Patents by Inventor Yifu Zhang

Yifu Zhang 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).

  • Publication number: 20150381966
    Abstract: A system that incorporates teachings of the exemplary embodiments may include, for example, means for generating a disparity map based on a depth map, means for determining accuracy of pixels in the depth map where the determining means identifies the pixels as either accurate or inaccurate based on a confidence map and the disparity map, and means for providing an adjusted depth map where the providing means adjusts inaccurate pixels of the depth map using a cost function associated with the inaccurate pixels. Other embodiments are disclosed.
    Type: Application
    Filed: September 3, 2015
    Publication date: December 31, 2015
    Inventors: CHAO TIAN, VINAY ANANT VAISHAMPAYAN, YIFU ZHANG
  • Patent number: 9153018
    Abstract: A system that incorporates teachings of the exemplary embodiments may include, for example, means for generating a disparity map based on a depth map, means for determining accuracy of pixels in the depth map where the determining means identifies the pixels as either accurate or inaccurate based on a confidence map and the disparity map, and means for providing an adjusted depth map where the providing means adjusts inaccurate pixels of the depth map using a cost function associated with the inaccurate pixels. Other embodiments are disclosed.
    Type: Grant
    Filed: January 30, 2015
    Date of Patent: October 6, 2015
    Assignee: AT&T Intellectual Property I, LP
    Inventors: Chao Tian, Vinay Anant Vaishampayan, Yifu Zhang
  • Patent number: 9143776
    Abstract: Techniques for objectively determining perceived video/image quality, the techniques including receiving a degraded bit-stream comprising encoded video/image data, and subsequently parsing the bit-stream to extract one or more video/image coding components. The video coding components may include intra-prediction modes, discrete cosine transform (DCT) coefficients, motion information, or combinations thereof, and may be used as a basis for objectively predicting a Quality of Experience (QoE) or Motion Opinion Score (MOS) score of the degraded bit-stream.
    Type: Grant
    Filed: May 7, 2012
    Date of Patent: September 22, 2015
    Assignee: Futurewei Technologies, Inc.
    Inventors: Yifu Zhang, Dong-Qing Zhang, Hong Yu
  • Publication number: 20150138195
    Abstract: A system that incorporates teachings of the exemplary embodiments may include, for example, means for generating a disparity map based on a depth map, means for determining accuracy of pixels in the depth map where the determining means identifies the pixels as either accurate or inaccurate based on a confidence map and the disparity map, and means for providing an adjusted depth map where the providing means adjusts inaccurate pixels of the depth map using a cost function associated with the inaccurate pixels. Other embodiments are disclosed.
    Type: Application
    Filed: January 30, 2015
    Publication date: May 21, 2015
    Inventors: Chao Tian, Vinay Anant Vaishampayan, Yifu Zhang
  • Patent number: 8977038
    Abstract: A system that incorporates teachings of the exemplary embodiments may include, for example, means for generating a disparity map based on a depth map, means for determining accuracy of pixels in the depth map where the determining means identifies the pixels as either accurate or inaccurate based on a confidence map and the disparity map, and means for providing an adjusted depth map where the providing means adjusts inaccurate pixels of the depth map using a cost function associated with the inaccurate pixels. Other embodiments are disclosed.
    Type: Grant
    Filed: March 19, 2013
    Date of Patent: March 10, 2015
    Assignee: AT&T Intellectual Property I, LP
    Inventors: Chao Tian, Vinay Anant Vaishampayan, Yifu Zhang
  • Publication number: 20140301464
    Abstract: Control data for a motion-constrained tile set (“MCTS”) indicates that inter-picture prediction processes within a specified set of tiles are constrained to reference only regions within the same set of tiles in previous pictures in decoding (or encoding) order. For example, a video encoder encodes multiple pictures partitioned into tiles to produce encoded data. The encoder outputs the encoded data along with control data (e.g., in a supplemental enhancement information message) that indicates that inter-picture prediction dependencies across tile set boundaries are constrained for a given tile set of one or more of the tiles. A video decoder or other tool receives the encoded data and MCTS control data, and processes the encoded data. Signaling and use of MCTS control data can facilitate region-of-interest decoding and display, transcoding to limit encoded data to a selected set of tiles, loss robustness, parallelism in encoding and/or decoding, and other video processing.
    Type: Application
    Filed: September 9, 2013
    Publication date: October 9, 2014
    Applicant: MICROSOFT CORPORATION
    Inventors: Yongjun Wu, Gary J. Sullivan, Yifu Zhang
  • Publication number: 20130293725
    Abstract: Techniques for objectively determining perceived video/image quality, the techniques including receiving a degraded bit-stream comprising encoded video/image data, and subsequently parsing the bit-stream to extract one or more video/image coding components. The video coding components may include intra-prediction modes, discrete cosine transform (DCT) coefficients, motion information, or combinations thereof, and may be used as a basis for objectively predicting a Quality of Experience (QoE) or Motion Opinion Score (MOS) score of the degraded bit-stream.
    Type: Application
    Filed: May 7, 2012
    Publication date: November 7, 2013
    Applicant: FUTUREWEI TECHNOLOGIES, INC.
    Inventors: Yifu Zhang, Dong-Qing Zhang, Hong Yu
  • Patent number: 8428342
    Abstract: A system that incorporates teachings of the exemplary embodiments may include, for example, means for generating a disparity map based on a depth map, means for determining accuracy of pixels in the depth map where the determining means identifies the pixels as either accurate or inaccurate based on a confidence map and the disparity map, and means for providing an adjusted depth map where the providing means adjusts inaccurate pixels of the depth map using a cost function associated with the inaccurate pixels. Other embodiments are disclosed.
    Type: Grant
    Filed: August 12, 2010
    Date of Patent: April 23, 2013
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Chao Tian, Vinay Anant Vaishampayan, Yifu Zhang
  • Publication number: 20120039525
    Abstract: A system that incorporates teachings of the exemplary embodiments may include, for example, means for generating a disparity map based on a depth map, means for determining accuracy of pixels in the depth map where the determining means identifies the pixels as either accurate or inaccurate based on a confidence map and the disparity map, and means for providing an adjusted depth map where the providing means adjusts inaccurate pixels of the depth map using a cost function associated with the inaccurate pixels. Other embodiments are disclosed.
    Type: Application
    Filed: August 12, 2010
    Publication date: February 16, 2012
    Applicant: AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventors: CHAO TIAN, Vinay Anant Vaishampayan, Yifu Zhang