Patents by Inventor Pingxin XIA

Pingxin XIA 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).

  • Image measurement device and method for the surface deformation of specimen based on sub-pixel corner detection
    Patent number: 11119016
    Abstract: A digital image measurement device and method for the surface deformation of specimen based on sub-pixel corner detection is disclosed. This digital image measurement device is composed of a new type of image pressure cell, a complementary metal-oxide-semiconductor (CMOS) camera, a camera bracket, a flexible lens hood, a computer and matching measurement software. This method discretizes the specimen into several four-node finite elements by printing grids on the specimen and takes corners of the grids as the nodes of the finite elements; tracks the deformation of the feature points in real time by edge detection and corner detection based on sub-pixel; captures the deformation of the whole surface of the specimen by the two flat mirrors which are at an 120° angle behind the specimen; achieves the observation of the deformation of the whole surface by conducting splicing and error correction on the three images.
    Type: Grant
    Filed: October 18, 2017
    Date of Patent: September 14, 2021
    Assignees: Suzhou H-C Soil & Water Science and Technology Co., Ltd, Dalian University of Technology
    Inventors: Longtan Shao, Xiaoxia Guo, Yonglu Liu, Chuan Huang, Mingming Wu, Xicheng Li, Pingxin Xia, Peng Ju, Xiao Liu, Chun Wang, Jie Xue, Ying Wang
  • IMAGE MEASUREMENT DEVICE AND METHOD FOR THE SURFACE DEFORMATION OF SPECIMEN BASED ON SUB-PIXEL CORNER DETECTION
    Publication number: 20200264082
    Abstract: A digital image measurement device and method for the surface deformation of specimen based on sub-pixel corner detection is disclosed. This digital image measurement device is composed of a new type of image pressure cell, a complementary metal-oxide-semiconductor (CMOS) camera, a camera bracket, a flexible lens hood, a computer and matching measurement software. This method discretizes the specimen into several four-node finite elements by printing grids on the specimen and takes corners of the grids as the nodes of the finite elements; tracks the deformation of the feature points in real time by edge detection and corner detection based on sub-pixel; captures the deformation of the whole surface of the specimen by the two flat mirrors which are at an 120° angle behind the specimen; achieves the observation of the deformation of the whole surface by conducting splicing and error correction on the three images.
    Type: Application
    Filed: October 18, 2017
    Publication date: August 20, 2020
    Inventors: Longtan SHAO, Xiaoxia GUO, Yonglu LIU, Chuan HUANG, Mingming WU, Xicheng LI, Pingxin XIA, Peng JU, Xiao LIU, Chun WANG, Jie XUE, Ying WANG