Patents by Inventor Xulou CAO

Xulou CAO 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).

  • METHOD FOR DETERMINING SEGMENTATION THRESHOLD OF DIGITAL IMAGE OF ROCK-SOIL MATERIAL
    Publication number: 20210201497
    Abstract: A method for determining a segmentation threshold of a digital image of a rock-soil material is disclosed. The method comprises the following steps: S1: acquiring a gray-level histogram curve of an SEM image of the rock-soil material; S2: determining a value range of a segmentation threshold T according to the gray-level histogram curve; S3: acquiring second derivatives of the gray-level histogram curve; and S4: determining the segmentation threshold T according to the second derivatives of the gray-level histogram curve and the value range of the segmentation threshold T. The present invention can rapidly and accurately determine the segmentation threshold of the digital image of the rock-soil material, and accurately distinguish a pore or fissure structure from a surface soil skeleton structure of the rock-soil material in the digital image.
    Type: Application
    Filed: May 9, 2019
    Publication date: July 1, 2021
    Applicants: China University of Mining and Technology, XUZHOU JIANGHENG ENERGY TECHNOLOGY CO., LTD.
    Inventors: Jiangfeng LIU, Xulou CAO, Jianfu SHAO, Bingxiang HUANG, Gang WANG, Dawei HU, Liang CHEN, Shuliang CHEN