Patents by Inventor Shizhu PAN

Shizhu PAN 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: 10861177
    Abstract: A system and method for binocular stereo vision is disclosed. The method includes acquiring a pair of images including a first image and a second image, the pair of images being captured by one or more cameras; obtaining a training model; determining a plurality of feature images according to the first image; determining one or more features of an object in the first image according to the training model and the plurality of feature images; determining a first area in the first image, the first area including at least one of the determined one or more features; obtaining depth information of the determined first area based on the first and second images; and determining a second area in the first image based on the determined first area and depth information, the second area including at least one of the determined first area.
    Type: Grant
    Filed: November 9, 2016
    Date of Patent: December 8, 2020
    Assignee: ZHEJIANG DAHUA TECHNOLOGY CO., LTD.
    Inventors: Wei Lu, Qiankun Li, Shizhu Pan, Miao Cheng, Xiangming Zhou
  • Publication number: 20200358939
    Abstract: A system and method for determining a dimension of a target. The method includes: determining a camera parameter, the camera parameter including at least one of a focal length, a yaw angle, a roll angle, a pitch angle, or a height of one or more cameras; acquiring a first image and a second image of an target captured by the one or more cameras; generating a first corrected image and a second corrected image by correcting the first image and the second image; determining a parallax between a pixel in the first corrected image and a corresponding pixel in the second corrected image; determining an outline of the target; and determining a dimension of the target based at least in part on the camera parameter, the parallax, and the outline of the target.
    Type: Application
    Filed: June 8, 2020
    Publication date: November 12, 2020
    Applicant: ZHEJIANG DAHUA TECHNOLOGY CO., LTD.
    Inventors: Wei LU, Qiankun LI, Shizhu PAN, Jichao GENG, Xiaohui SUN, Haijiang PAN, Jinting WANG
  • Publication number: 20200293793
    Abstract: A system for video surveillance includes an image sensor configured capture an image including a reference zone and a memory device that stores instructions. The system also includes one or more processors that are configured to execute the instructions to determine 3D coordinates of a target comprised in the image and determine 3D coordinates of the reference zone. The one or more processors are further configured to identify an event according to the 3D coordinates of the target and the 3D coordinates of the reference zone.
    Type: Application
    Filed: June 1, 2020
    Publication date: September 17, 2020
    Applicant: ZHEJIANG DAHUA TECHNOLOGY CO., LTD.
    Inventors: Huadong PAN, Miao CHENG, Shizhu PAN, Xingming ZHANG
  • Patent number: 10681257
    Abstract: A system and method for determining a dimension of a target. The method includes: determining a camera parameter, the camera parameter including at least one of a focal length, a yaw angle, a roll angle, a pitch angle, or a height of one or more cameras; acquiring a first image and a second image of an target captured by the one or more cameras; generating a first corrected image and a second corrected image by correcting the first image and the second image; determining a parallax between a pixel in the first corrected image and a corresponding pixel in the second corrected image; determining an outline of the target; and determining a dimension of the target based at least in part on the camera parameter, the parallax, and the outline of the target.
    Type: Grant
    Filed: August 26, 2016
    Date of Patent: June 9, 2020
    Assignee: ZHEJIANG DAHUA TECHNOLOGY CO., LTD.
    Inventors: Wei Lu, Qiankun Li, Shizhu Pan, Jichao Geng, Xiaohui Sun, Haijiang Pan, Jinting Wang
  • Patent number: 10671857
    Abstract: A system for video surveillance includes an image sensor configured capture an image including a reference zone and a memory device that stores instructions. The system also includes one or more processors that are configured to execute the instructions to determine 3D coordinates of a target comprised in the image and determine 3D coordinates of the reference zone. The one or more processors are further configured to identify an event according to the 3D coordinates of the target and the 3D coordinates of the reference zone.
    Type: Grant
    Filed: May 23, 2016
    Date of Patent: June 2, 2020
    Assignee: ZHEJIANG DAHUA TECHNOLOGY CO., LTD.
    Inventors: Huadong Pan, Miao Cheng, Shizhu Pan, Xingming Zhang
  • Publication number: 20190340461
    Abstract: A method and system for locating a target object in a target scene. The method may include obtaining a depth image of the target scene. The depth image may include a plurality of pixels. The method may also include, for each of the plurality of pixels of the depth image, determining a first target coordinate under a target coordinate system. The method may further include generating a marking image according to the depth image and the first target coordinates of the plurality of pixels in the depth image. The marking image may represent potential target objects in the depth image. The method may also include determining a locating coordinate of the target object under the target coordinate system according to the marking image.
    Type: Application
    Filed: July 17, 2019
    Publication date: November 7, 2019
    Applicant: ZHEJIANG DAHUA TECHNOLOGY CO., LTD.
    Inventors: Qiankun LI, Wei LU, Shizhu PAN
  • Publication number: 20180322648
    Abstract: A system and method for binocular stereo vision is disclosed. The method includes acquiring a pair of images including a first image and a second image, the pair of images being captured by one or more cameras; obtaining a training model; determining a plurality of feature images according to the first image; determining one or more features of an object in the first image according to the training model and the plurality of feature images; determining a first area in the first image, the first area including at least one of the determined one or more features; obtaining depth information of the determined first area based on the first and second images; and determining a second area in the first image based on the determined first area and depth information, the second area including at least one of the determined first area.
    Type: Application
    Filed: November 9, 2016
    Publication date: November 8, 2018
    Applicant: ZHEJIANG DAHUA TECHNOLOGY CO., LTD.
    Inventors: Wei LU, Qiankun LI, Shizhu PAN, Miao CHENG, Xiangming ZHOU
  • Publication number: 20180241923
    Abstract: A system and method for determining a dimension of a target. The method includes: determining a camera parameter, the camera parameter including at least one of a focal length, a yaw angle, a roll angle, a pitch angle, or a height of one or more cameras; acquiring a first image and a second image of an target captured by the one or more cameras; generating a first corrected image and a second corrected image by correcting the first image and the second image; determining a parallax between a pixel in the first corrected image and a corresponding pixel in the second corrected image; determining an outline of the target; and determining a dimension of the target based at least in part on the camera parameter, the parallax, and the outline of the target.
    Type: Application
    Filed: August 26, 2016
    Publication date: August 23, 2018
    Applicant: ZHEJIANG DAHUA TECHNOLOGY CO., LTD.
    Inventors: Wei LU, Qiankun LI, Shizhu PAN, Jichao GENG, Xiaohui SUN, Haijiang PAN, Jinting WANG
  • Publication number: 20180173965
    Abstract: A system for video surveillance includes an image sensor configured capture an image including a reference zone and a memory device that stores instructions. The system also includes one or more processors that are configured to execute the instructions to determine 3D coordinates of a target comprised in the image and determine 3D coordinates of the reference zone. The one or more processors are further configured to identify an event according to the 3D coordinates of the target and the 3D coordinates of the reference zone.
    Type: Application
    Filed: May 23, 2016
    Publication date: June 21, 2018
    Applicant: ZHEJIANG DAHUA TECHNOLOGY CO., LTD.
    Inventors: Huadong PAN, Miao CHENG, Shizhu PAN, Xingming ZHANG