Patents by Inventor Ciao-Siang Siao

Ciao-Siang Siao 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).

  • Scale changing detection and scaling ratio determination by using motion information
    Patent number: 9087378
    Abstract: This invention discloses a method for object tracking, including determination of an area scaling ratio of the object in a video image sequence. In one embodiment, a centroid of the object is determined. One or more directed straight lines are selected, each passing through the centroid, extending from an end of the object's boundary to an opposite end thereof, and having a direction that is upward. A length scaling ratio for each directed straight line is determined by: determining a motion vector for each selected pixel on the line; computing a scalar component of the motion vector projected onto the line; estimating a change of the line's length according to the scalar components obtained for all pixels; and determining the length scaling ratio according to the change of the line's length. The area scaling ratio is computed based on the length scaling ratios for all directed straight lines.
    Type: Grant
    Filed: June 29, 2012
    Date of Patent: July 21, 2015
    Assignee: Hong Kong Applied Science and Technology Research Institute Company Limited
    Inventors: Chunhui Cui, Chun-Fu Chen, Ciao-Siang Siao, Gwo Giun Lee, Yan Huo
  • SCALE CHANGING DETECTION AND SCALING RATIO DETERMINATION BY USING MOTION INFORMATION
    Publication number: 20140003741
    Abstract: This invention discloses a method for determining an area scaling ratio of an object in a video image sequence. In one embodiment, a centroid of the object is determined. One or more directed straight lines are selected, each passing through the centroid, extending from an end of the object's boundary to an opposite end thereof, and having a direction that is upward. A length scaling ratio for each directed straight line is determined by: determining a motion vector for each selected pixel on the line; computing a scalar component of the motion vector projected onto the line; estimating a change of the line's length according to the scalar components obtained for all pixels; and determining the length scaling ratio according to the change of the line's length. The area scaling ratio is computed based on the length scaling ratios for all directed straight lines.
    Type: Application
    Filed: June 29, 2012
    Publication date: January 2, 2014
    Applicant: Hong Kong Applied Science and Technology Research Institute Company Limited
    Inventors: Chunhui Cui, Chun-Fu Chen, Ciao-Siang Siao, Gwo Giun LEE, Yan Huo