Patents by Inventor Guoying Zhao

Guoying Zhao 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).

  • 3D mask face anti-spoofing with remote photoplethysmography
    Patent number: 10380444
    Abstract: The present invention relates to 3D mask face anti-spoofing with remote photoplethysmography. More particularly, it relates to a local rPPG correlation model to extract discriminative and robust local rPPG signal patterns so that an imposter can better be detected regardless of the material and quality of the mask.
    Type: Grant
    Filed: July 14, 2017
    Date of Patent: August 13, 2019
    Assignee: Hong Kong Baptist University
    Inventors: Pong Chi Yuen, Siqi Liu, Shengping Zhang, Guoying Zhao
  • 3D MASK FACE ANTI-SPOOFING WITH REMOTE PHOTOPLETHYSMOGRAPHY
    Publication number: 20190014999
    Abstract: The present invention relates to 3D mask face anti-spoofing with remote photoplethysmography. More particularly, it relates to a local rPPG correlation model to extract discriminative and robust local rPPG signal patterns so that an imposter can better be detected regardless of the material and quality of the mask.
    Type: Application
    Filed: July 14, 2017
    Publication date: January 17, 2019
    Inventors: Pong Chi YUEN, Siqi LIU, Shengping ZHANG, Guoying ZHAO
  • Automated recognition algorithm for detecting facial expressions
    Patent number: 8848068
    Abstract: This document discloses a solution for detecting human facial micro-expressions automatically by a video analysis system. Facial micro-expressions are involuntary expressions having a very short duration.
    Type: Grant
    Filed: May 8, 2012
    Date of Patent: September 30, 2014
    Assignee: Oulun Yliopisto
    Inventors: Tomas Pfister, Matti Pietikäinen, Xiaobai Li, Guoying Zhao
  • Automated Recognition Algorithm For Detecting Facial Expressions
    Publication number: 20130300900
    Abstract: This document discloses a solution for detecting human facial micro-expressions automatically by a video analysis system. Facial micro-expressions are involuntary expressions having a very short duration.
    Type: Application
    Filed: May 8, 2012
    Publication date: November 14, 2013
    Inventors: Tomas Pfister, Matti Pietikäinen, Xiaobai Li, Guoying Zhao