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公开(公告)号：US20190192090A1
公开(公告)日：2019-06-27
申请号：US16232072
申请日：2018-12-26
发明人： Liang Li , Zhiqiang Chen , Kejun Kang , Ziran Zhao , Li Zhang , Yuxiang Xing , Tiao Zhao , Jianmin Li , Bicheng Liu , Qian Yi
摘要： The present disclosure provides a decomposition method based on basis material combination. In the present disclosure, a scanned object is divided into a plurality of regions, the basis material combinations used in each of the divided regions are different each other, and the scanned object is re-divided according to the re-determined equivalent atomic number of its each point until the change on decomposition coefficient meets certain conditions. Thereby, a decomposition method based on dynamic basis material combinations is realized, which reduces a decomposition error caused by improper selection of the basis material combination and improves the accuracy of the decomposition and substance identification of the multi-energy CT.
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公开(公告)号：US10448904B2
公开(公告)日：2019-10-22
申请号：US16232072
申请日：2018-12-26
发明人： Liang Li , Zhiqiang Chen , Kejun Kang , Ziran Zhao , Li Zhang , Yuxiang Xing , Tiao Zhao , Jianmin Li , Bicheng Liu , Qian Yi
摘要： The present disclosure provides a decomposition method based on basis material combination. In the present disclosure, a scanned object is divided into a plurality of regions, the basis material combinations used in each of the divided regions are different each other, and the scanned object is re-divided according to the re-determined equivalent atomic number of its each point until the change on decomposition coefficient meets certain conditions. Thereby, a decomposition method based on dynamic basis material combinations is realized, which reduces a decomposition error caused by improper selection of the basis material combination and improves the accuracy of the decomposition and substance identification of the multi-energy CT.
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公开(公告)号：US20180182085A1
公开(公告)日：2018-06-28
申请号：US15827722
申请日：2017-11-30
发明人： Ziran Zhao , Jianping Gu , Qian Yi , Bicheng Liu
CPC分类号： G06T7/001 , G01N23/04 , G01V5/0016 , G06T5/002 , G06T5/20 , G06T5/50 , G06T7/0004 , G06T7/74 , G06T2207/10028 , G06T2207/10116 , G06T2207/30112
摘要： The present disclosure discloses an inspection device and a method for inspecting a container. Transmission scanning is performed on the inspected container using a scanning device including a sparse area array detector to obtain scan data. Digital focusing is performed at a specific depth position in a depth direction. Defocused pixel values are filtered out to obtain a slice image at the specific depth position. It is judged whether dangerous articles or suspicious articles are included in the slice image.
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公开(公告)号：US11346975B2
公开(公告)日：2022-05-31
申请号：US16467140
申请日：2017-08-04
发明人： Zhiqiang Chen , Ziran Zhao , Yaohong Liu , Jianping Gu , Qian Yi , Bicheng Liu , Guangming Xu
IPC分类号： G01V5/00 , G01N23/046 , G01T1/29
摘要： The present disclosure provides a spiral Computed Tomography (CT) device and a three-dimensional image reconstruction method. The spiral CT device includes: an inspection station operable to carry an object to be inspected and defining an inspection space; a rotational supporting apparatus disposed around the inspection space; a plurality of X-ray sources located on the rotational supporting apparatus; and a plurality of X-ray receiving apparatuses located on the rotational supporting apparatus and opposing to the plurality of X-ray sources respectively, wherein the plurality of X-ray sources and the plurality of X-ray receiving apparatuses are rotational synchronously with the rotational supporting apparatus, wherein the plurality of X-ray sources are closely disposed and fan-shaped X-ray beams provided by the plurality of X-ray sources cover the inspection space with a minimum degree of overlapping.
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公开(公告)号：US10586324B2
公开(公告)日：2020-03-10
申请号：US15827722
申请日：2017-11-30
发明人： Ziran Zhao , Jianping Gu , Qian Yi , Bicheng Liu
摘要： The present disclosure discloses an inspection device and a method for inspecting a container. Transmission scanning is performed on the inspected container using a scanning device including a sparse area array detector to obtain scan data. Digital focusing is performed at a specific depth position in a depth direction. Defocused pixel values are filtered out to obtain a slice image at the specific depth position. It is judged whether dangerous articles or suspicious articles are included in the slice image.
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