Patents by Inventor Zirao Zhao

Zirao Zhao 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).

  • Article detection apparatus and a detecting method
    Patent number: 7991112
    Abstract: The present invention discloses a detecting method of an article detection apparatus composed of an individual DR subsystem and an individual CT subsystem, the method comprising: obtaining a first projection data on ray attenuation coefficient by using the DR subsystem to project an A-layer of an article at a first projection angle, and obtaining a second projection data on ray attenuation coefficient by using the CT subsystem to project an A-layer of the article at a second projection angle different from the first projection angle; and judging whether an A-layer of the detected article contains a dangerous article based on the first projection data and the second projection data so as to obtain a first judgment on an A-layer of the detected article.
    Type: Grant
    Filed: December 23, 2008
    Date of Patent: August 2, 2011
    Assignees: Nuctech Company Limited, Tsinghua University
    Inventors: Zhiqiang Chen, Yuanjing Li, Yulan Li, Li Zhang, Wanlong Wu, Hua Peng, Yinong Liu, Zirao Zhao, Xuewu Wang, Shangmin Sun, Bin Sang, Hailin Wang, Quanwei Song, Jinyu Zhang
  • ARTICLE DETECTION APPARATUS AND A DETECTING METHOD
    Publication number: 20090168959
    Abstract: The present invention discloses a detecting method of the article detection apparatus composed of an individual DR subsystem and an individual CT subsystem, the method comprising: obtaining a first projection data on ray attenuation coefficient by using the DR subsystem to project the A-layer of an article at a first projection angle, and obtaining a second projection data on ray attenuation coefficient by using the CT subsystem to project the A-layer of the article at a second projection angle different from the first projection angle; and judging whether the A-layer of the detected article exists a dangerous article based on the first projection data and the second projection data so as to obtain a first judgment on the A-layer of the detected article.
    Type: Application
    Filed: December 23, 2008
    Publication date: July 2, 2009
    Inventors: Zhiqiang Chen, Yuanjing Li, Yulan Li, Li Zhang, Wanlong Wu, Hua Peng, Yinong Liu, Zirao Zhao, Xuewu Wang, Shangmin Sun, Bin Sang, Hailin Wang, Quanwei Song, Jinyu Zhang