Patents by Inventor Xifeng LIANG

Xifeng LIANG 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: 11893768
    Abstract: The present invention discloses a method and system for recognizing a geometric regularity image of a honeycomb structure. The method includes the steps of image acquisition, image processing, vertex extraction, cell reconstruction, and quality evaluation, wherein a step of binaryzation is set between the step of image processing and the step of vertex extraction, and is to set a pixel value of a background in the image to be 0 and set a pixel value of a honeycomb skeleton in the image to be 1 to form a binary image, and the step of quality evaluation is to calculate angular deviation values of all the cells and an average thereof as well as linear deviation values and an average thereof based on the reconstructed cell image, and determine whether the honeycomb structure is qualified or not by comparing with a set tolerance zone.
    Type: Grant
    Filed: August 18, 2020
    Date of Patent: February 6, 2024
    Assignee: CENTRAL SOUTH UNIVERSITY
    Inventors: Zhonggang Wang, Xifeng Liang, Chong Shi, Wei Zhou, Can Cui, Wei Xiong, Xinxin Wang
  • Patent number: 11893725
    Abstract: Disclosed are a method for evaluating a geometric form of a honeycomb product and a system for detecting and evaluating a geometric form of a honeycomb product. The method for evaluating the geometric form includes: acquiring a top-surface image and a side-surface image of the honeycomb product; acquiring vertex coordinates by extracting vertices from the top-surface image; acquiring serial numbers of six vertices of each cell by reconstructing the cells of the top-surface image; computing deviation angles of six interior angles of each cell based on the serial numbers and vertex coordinates of the six vertices of each cell; extracting a top-surface side boundary and a side-surface side boundary of the honeycomb product from the top-surface image and the side-surface image; computing a maximum top-surface deflection and a maximum side-surface deflection of the honeycomb product based on the top-surface side boundary and the side-surface side boundary.
    Type: Grant
    Filed: August 18, 2020
    Date of Patent: February 6, 2024
    Assignee: CENTRAL SOUTH UNIVERSITY
    Inventors: Zhonggang Wang, Can Cui, Chong Shi, Xifeng Liang, Zhendong Li, Bo Sun, Ziping Lei
  • Publication number: 20230214986
    Abstract: Disclosed are a method for evaluating a geometric form of a honeycomb product and a system for detecting and evaluating a geometric form of a honeycomb product. The method for evaluating the geometric form includes: acquiring a top-surface image and a side-surface image of the honeycomb product; acquiring vertex coordinates by extracting vertices from the top-surface image; acquiring serial numbers of six vertices of each cell by reconstructing the cells of the top-surface image; computing deviation angles of six interior angles of each cell based on the serial numbers and vertex coordinates of the six vertices of each cell; extracting a top-surface side boundary and a side-surface side boundary of the honeycomb product from the top-surface image and the side-surface image; computing a maximum top-surface deflection and a maximum side-surface deflection of the honeycomb product based on the top-surface side boundary and the side-surface side boundary.
    Type: Application
    Filed: August 18, 2020
    Publication date: July 6, 2023
    Inventors: Zhonggang WANG, Can CUI, Chong SHI, Xifeng LIANG, Zhendong LI, Bo SUN, Ziping LEI
  • Publication number: 20230214987
    Abstract: The present invention discloses a method and system for recognizing a geometric regularity image of a honeycomb structure. The method includes the steps of image acquisition, image processing, vertex extraction, cell reconstruction, and quality evaluation, wherein a step of binaryzation is set between the step of image processing and the step of vertex extraction, and is to set a pixel value of a background in the image to be 0 and set a pixel value of a honeycomb skeleton in the image to be 1 to form a binary image, and the step of quality evaluation is to calculate angular deviation values of all the cells and an average thereof as well as linear deviation values and an average thereof based on the reconstructed cell image, and determine whether the honeycomb structure is qualified or not by comparing with a set tolerance zone.
    Type: Application
    Filed: August 18, 2020
    Publication date: July 6, 2023
    Inventors: Zhonggang WANG, Xifeng LIANG, Chong SHI, Wei ZHOU, Can CUI, Wei XIONG, Xinxin WANG