Patents by Inventor Yibao Zhao

Yibao 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).

  • Audio-visual feature fusion and support vector machine useful for continuous speech recognition
    Patent number: 7472063
    Abstract: A speech recognition method includes several embodiments describing application of support vector machine analysis to a mouth region. Lip position can be accurately determined and used in conjunction with synchronous or asynchronous audio data to enhance speech recognition probabilities.
    Type: Grant
    Filed: December 19, 2002
    Date of Patent: December 30, 2008
    Assignee: Intel Corporation
    Inventors: Ara V. Nefian, Xiaobo Pi, Luhong Liang, Xiaoxing Liu, Yibao Zhao
  • Coupled hidden Markov model (CHMM) for continuous audiovisual speech recognition
    Patent number: 7454342
    Abstract: Method and apparatus for an audiovisual continuous speech recognition (AVCSR) system using a coupled hidden Markov model (CHMM) are described herein. In one aspect, an exemplary process includes receiving an audio data stream and a video data stream, and performing continuous speech recognition based on the audio and video data streams using a plurality of hidden Markov models (HMMs), a node of each of the HMMs at a time slot being subject to one or more nodes of related HMMs at a preceding time slot. Other methods and apparatuses are also described.
    Type: Grant
    Filed: March 19, 2003
    Date of Patent: November 18, 2008
    Assignee: Intel Corporation
    Inventors: Ara Victor Nefian, Xiaoxing Liu, Xiaobo Pi, Luhong Liang, Yibao Zhao
  • Method and system for building a domain specific statistical language model from rule based grammar specifications
    Patent number: 7346495
    Abstract: A method and system providing a statistical representation from rule-based grammar specifications. The language model is generated by obtaining a statistical representation of a rule-based language model and combining it with a statistical representation of a statistical language model for use as a final language model. The language model may be enhanced by applying smoothing and/or adapting for use as the final language model.
    Type: Grant
    Filed: September 30, 2000
    Date of Patent: March 18, 2008
    Assignee: Intel Corporation
    Inventors: Yibao Zhao, Yonghong Yan, Zhiwei Lin
  • Method and system for using rule-based knowledge to build a class-based domain specific statistical language model
    Patent number: 7275033
    Abstract: A method and system for providing a class-based statistical language model representation from rule-based knowledge is disclosed. The class-based language model is generated from a statistical representation of a class-based rule net. A class-based rule net is generated using the domain-related rules with words replaced with their corresponding class-tags that are manually defined. The class-based statistical representation from the class-based rule net is combined with a class-based statistical representation from a statistical language model to generate a language model. The language model is enhanced by smoothing/adapting with general-purpose and/or domain-related corpus for use as the final language model. A two-pass search algorithm is applied for speech decoding.
    Type: Grant
    Filed: September 30, 2000
    Date of Patent: September 25, 2007
    Assignee: Intel Corporation
    Inventors: Yibao Zhao, Yonghong Yan, Zhiwei Lin
  • Coupled hidden markov model (CHMM) for continuous audiovisual speech recognition
    Publication number: 20040186718
    Abstract: Method and apparatus for an audiovisual continuous speech recognition (AVCSR) system using a coupled hidden Markov model (CHMM) are described herein. In one aspect, an exemplary process includes receiving an audio data stream and a video data stream, and performing continuous speech recognition based on the audio and video data streams using a plurality of hidden Markov models (HMMs), a node of each of the HMMs at a time slot being subject to one or more nodes of related HMMs at a preceding time slot. Other methods and apparatuses are also described.
    Type: Application
    Filed: March 19, 2003
    Publication date: September 23, 2004
    Inventors: Ara Victor Nefian, Xiaoxing Liu, Xiaobo Pi, Luhong Liang, Yibao Zhao
  • Visual feature extraction procedure useful for audiovisual continuous speech recognition
    Publication number: 20040122675
    Abstract: A speech recognition method includes several embodiments describing application of support vector machine analysis to a mouth region. Lip position can be accurately determined and used in conjunction with synchronous or asynchronous audio data to enhance speech recognition probabilities.
    Type: Application
    Filed: December 19, 2002
    Publication date: June 24, 2004
    Inventors: Ara Victor Nefian, Xiaobo Pi, Luhong Liang, Xiaoxing Liu, Yibao Zhao