Patents by Inventor Victor H. Chan

Victor H. Chan 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: 9269024
    Abstract: Certain embodiments of the present disclosure relate to a technique for image reconstruction that employs cascaded over-complete dictionaries (i.e., collections of bases) for extracting features and building representations for images at different reconstruction levels. Each dictionary on a different reconstruction level can be learned and optimized for the purpose of capturing either generic or discriminative features. By finding sparse representations through the cascaded dictionaries, an image can be reconstructed and recognized.
    Type: Grant
    Filed: January 31, 2011
    Date of Patent: February 23, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Victor H. Chan, Thomas Zheng, Yinyin Liu
  • Patent number: 9239968
    Abstract: Certain embodiments of the present disclosure relate to a technique for image reconstruction that employs cascaded over-complete dictionaries (i.e., collections of bases) for extracting features and building representations for images at different reconstruction levels. Each dictionary on a different reconstruction level can be learned and optimized for the purpose of capturing either generic or discriminative features. By finding sparse representations through the cascaded dictionaries, an image can be reconstructed and recognized.
    Type: Grant
    Filed: January 31, 2011
    Date of Patent: January 19, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Victor H. Chan, Thomas Zheng, Yinyin Liu
  • Patent number: 8456545
    Abstract: Descriptions are provided of various implementations of an automated tuning process configured to optimize a procedure for post-processing images captured by a camera sensor.
    Type: Grant
    Filed: May 6, 2010
    Date of Patent: June 4, 2013
    Assignee: QUALCOMM Incorporated
    Inventors: Victor H. Chan, Narayana S. Ravirala
  • Patent number: 8442344
    Abstract: The disclosure describes adaptive filtering techniques to improve the quality of captured image information, such as video or still images. An image sensor captures image information and determines a plurality of parameter values based on a current exposure index and a current scaling factor of the image information. The adaptive spatial image filter includes both horizontal and vertical sharpening filters and configures, i.e., adapts, the horizontal sharpening filter and the vertical sharpening filter based on the plurality of parameter values determined by the image sensor. The adaptive spatial image filter applies the horizontal and vertical sharpening filters to at one channel of the image information to generate filtered image information.
    Type: Grant
    Filed: August 7, 2006
    Date of Patent: May 14, 2013
    Assignee: QUALCOMM Incorporated
    Inventors: Xiaoyun Jiang, Chinchuan Andrew Chiu, Dennis Liu, Victor H. Chan, Xin Zhong
  • Patent number: 8223230
    Abstract: Descriptions are provided of various implementations of an automated tuning process configured to optimize a procedure for post-processing images captured by a camera sensor.
    Type: Grant
    Filed: May 6, 2010
    Date of Patent: July 17, 2012
    Assignee: QUALCOMM Incorporated
    Inventors: Victor H. Chan, Narayana S. Ravirala
  • Publication number: 20110188757
    Abstract: Certain embodiments of the present disclosure relate to a technique for image reconstruction that employs cascaded over-complete dictionaries (i.e., collections of bases) for extracting features and building representations for images at different reconstruction levels. Each dictionary on a different reconstruction level can be learned and optimized for the purpose of capturing either generic or discriminative features. By finding sparse representations through the cascaded dictionaries, an image can be reconstructed and recognized.
    Type: Application
    Filed: January 31, 2011
    Publication date: August 4, 2011
    Inventors: Victor H. CHAN, Thomas ZHENG, Yinyin LIU
  • Publication number: 20100283876
    Abstract: Descriptions are provided of various implementations of an automated tuning process configured to optimize a procedure for post-processing images captured by a camera sensor.
    Type: Application
    Filed: May 6, 2010
    Publication date: November 11, 2010
    Applicant: QUALCOMM Incorporated
    Inventors: Victor H. Chan, Narayana S. Ravirala
  • Publication number: 20100283872
    Abstract: Descriptions are provided of various implementations of an automated tuning process configured to optimize a procedure for post-processing images captured by a camera sensor.
    Type: Application
    Filed: May 6, 2010
    Publication date: November 11, 2010
    Applicant: QUALCOMM Incorporated
    Inventors: Victor H. Chan, Narayana S. Ravirala
  • Publication number: 20080031538
    Abstract: The disclosure describes adaptive filtering techniques to improve the quality of captured image information, such as video or still images. An image sensor captures image information and determines a plurality of parameter values based on a current exposure index and a current scaling factor of the image information. The adaptive spatial image filter includes both horizontal and vertical sharpening filters and configures, i.e., adapts, the horizontal sharpening filter and the vertical sharpening filter based on the plurality of parameter values determined by the image sensor. The adaptive spatial image filter applies the horizontal and vertical sharpening filters to at one channel of the image information to generate filtered image information.
    Type: Application
    Filed: August 7, 2006
    Publication date: February 7, 2008
    Inventors: Xiaoyun Jiang, Chinchuan Andrew Chiu, Dennis Liu, Victor H. Chan, Xin Zhong
  • Publication number: 20030078064
    Abstract: A push to talk wireless dispatch service includes a media control unit that establishes, while one remote unit has the floor and push to talk (PTT) signals are received from other remote units, a queue of remote units based the respective times of receipt of the PTT signals and/or priorities of transmission. The transmission channel of the dispatch service, when released by a speaking unit, is granted to the next remote unit in the queue, and so on.
    Type: Application
    Filed: October 22, 2001
    Publication date: April 24, 2003
    Inventor: Victor H. Chan