Patents by Inventor Zechao Liu

Zechao Liu 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: 11360464
    Abstract: High intensity multi-directional FDM 3D printing method for stereo vision monitoring involves intelligent control and computer vision technology. Specifically, it involves multi-directional 3D printing hardware platform construction, stereo vision detection, laser heating to enhance the connection strength between various parts of the model, so as to reduce the use of external support structure as much as possible on the premise of ensuring the printing accuracy, and make the various parts of the model can be well connected to enhance the integrity of the model.
    Type: Grant
    Filed: May 3, 2021
    Date of Patent: June 14, 2022
    Assignee: BEIJING UNIVERSITY OF TECHNOLOGY
    Inventors: Lifang Wu, Yupeng Guan, Miao Yu, Yisong Gao, Meishan Liu, Zechao Liu, Meng Jian, Ye Xiang, Ge Shi
  • Patent number: 11353845
    Abstract: A model-adaptive multi-source large-scale mask projection 3D printing system configured to conduct the following steps: projecting pure-color images of first and second colors having identical attributes, capturing an image of an overlapping portion and calculating height and width information of the overlapping portion; splitting a pre-processed slice and respectively recording width and height information of two slices resulting from the splitting and generating two gray scale images having identical attributes thereto; counting power values of identical positions of slices in different gray scale values, performing a further calculation to obtain a projection mapping function, using the projection mapping function as a basis for performing optimization on gray scale interpolation of the generated images; and fusing the processed gray scale images and the originally split two slices to obtain a mask projection 3D printing slice having a uniform shaping brightness, and forming a final product.
    Type: Grant
    Filed: August 25, 2020
    Date of Patent: June 7, 2022
    Assignee: Beijing University of Technology
    Inventors: Lifang Wu, Lidong Zhao, Zechao Liu, Jiankang Qiu, Xiaohua Guo, Meng Jian, Ziming Zhang
  • Publication number: 20210302949
    Abstract: High intensity multi-directional FDM 3D printing method for stereo vision monitoring involves intelligent control and computer vision technology. Specifically, it involves multi-directional 3D printing hardware platform construction, stereo vision detection, laser heating to enhance the connection strength between various parts of the model, so as to reduce the use of external support structure as much as possible on the premise of ensuring the printing accuracy, and make the various parts of the model can be well connected to enhance the integrity of the model.
    Type: Application
    Filed: May 3, 2021
    Publication date: September 30, 2021
    Inventors: Lifang WU, Yupeng GUAN, Miao YU, Yisong GAO, Meishan LIU, Zechao LIU, Meng JIAN, Ye XIANG, Ge SHI
  • Publication number: 20210018897
    Abstract: A model-adaptive multi-source large-scale mask projection 3D printing system configured to conduct the following steps: projecting pure-color images of first and second colors having identical attributes, capturing an image of an overlapping portion and calculating height and width information of the overlapping portion; splitting a pre-processed slice and respectively recording width and height information of two slices resulting from the splitting and generating two gray scale images having identical attributes thereto; counting power values of identical positions of slices in different gray scale values, performing a further calculation to obtain a projection mapping function, using the projection mapping function as a basis for performing optimization on gray scale interpolation of the generated images; and fusing the processed gray scale images and the originally split two slices to obtain a mask projection 3D printing slice having a uniform shaping brightness, and forming a final product.
    Type: Application
    Filed: August 25, 2020
    Publication date: January 21, 2021
    Inventors: Lifang Wu, Lidong Zhao, Zechao Liu, Jiankang Qiu, Xiaohua Guo, Meng Jian, Ziming Zhang