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公开(公告)号：US10122973B2
公开(公告)日：2018-11-06
申请号：US14580488
申请日：2014-12-23
Applicant: Nuctech Company Limited
Inventor： Ziran Zhao , Yaohong Liu , Jianping Gu , Qiang Li , Jian Zhang
Abstract: The present disclosure relates to a fluoroscopic inspection system for automatic classification and recognition of cargoes. The system includes: an image data acquiring unit, configured to perform scanning and imaging for a container by using an X-ray scanning device to acquire a scanned image; an image segmenting unit, configured to segment the scanned image into small regions each having similar gray scales and texture features; a feature extracting unit, configured to extract features of the small regions; a training unit, configured to generate a classifier according to annotated images; and a classification and recognition unit, configured to recognize the small regions by using the classifier according to the extracted features, to obtain a probability of each small region pertaining to a certain category of cargoes, and merge small regions to obtain large regions each representing a category.
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公开(公告)号：US20180190482A1
公开(公告)日：2018-07-05
申请号：US15858255
申请日：2017-12-29
Applicant: Nuctech Company Limited , Tsinghua University
Inventor： Qingjun Zhang , Yuanjing Li , Ziran Zhao , Weiping Zhu , Huishao He , Xianghua Li , Qiufeng Ma
Abstract: The present disclosure provides an ion migration tube and a method of operation the same. The ion migration tube includes an interior space and an ion gate disposed within the interior space, the interior space includes an ionization region having an absolute value of potential V1 and a migration region. An ion gate is disposed between the ionization region and the migration region and includes a first ion gate grid having an absolute value of potential V2 and a second ion gate grid having an absolute value of potential V3, the migration region comprises at least a first migration region electrode having an absolute value of potential V4 and a second migration region electrode having an absolute value of potential V5. When the ion gate is opened, a potential well is formed for ionized ions between the first ion gate grid and the first migration region electrode so as to compress an ion group entering the migration region.
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53.发明申请公开(公告)号：US20180189945A1
公开(公告)日：2018-07-05
申请号：US15858868
申请日：2017-12-29
Applicant: Nuctech Company Limited , Tsinghua University
Inventor： Ziran Zhao , Jianping Gu , Bicheng Liu , Qi Wang , Xi Yi
CPC classification number: G06T7/0004 , G01P13/00 , G01T1/00 , G01V5/0058 , G06F3/016 , G06Q50/30 , G06T7/74 , G06T15/08 , G06T2207/10012 , G06T2207/10081 , G06T2207/30232
Abstract: A method, a device and a security system for image data processing based on VR or AR are disclosed. In one aspect, an example image data processing method includes reconstructing, based on three-dimensional (3D) scanned data of a containing apparatus in which objects are contained, a 3D image of the containing apparatus and the objects contained in the containing apparatus. The reconstructed 3D image is stereoscopically displayed. Manipulation information is determined for at least one of the objects in the containing apparatus based on positioning information and action information of a user. At least a 3D image of the at least one object is reconstructed based on the determined manipulation information. The at least one reconstructed object is presented on the displayed 3D image.
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公开(公告)号：US20180188138A1
公开(公告)日：2018-07-05
申请号：US15858829
申请日：2017-12-29
Applicant: Tsinghua University , Nuctech Company Limited
Inventor： Qingjun Zhang , Yuanjing Li , Ziran Zhao , Ge Li , Biao Cao , Qiufeng Ma , Linxia Tan
IPC: G01N1/22
Abstract: A sampling device and an inspection apparatus are disclosed. In one aspect, an example gathering and sampling device includes a cylindrical outer housing and an inner housing disposed within the cylindrical outer housing, a cyclone chamber is formed between the cylindrical outer housing and the inner housing to generate a cyclone by injecting a gas flow into the cyclone chamber. The gathering and sampling device further includes an outer chamber body, and a plurality of gas injection orifices formed in the first inner housing end opening of the inner housing and configured to inject a gas towards a substantial center of a circular region defined by an end face of the first outer housing end opening of the cylindrical outer housing.
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公开(公告)号：US20180180746A1
公开(公告)日：2018-06-28
申请号：US15853961
申请日：2017-12-26
Applicant: NUCTECH COMPANY LIMITED
Inventor： Shuwei Li , Qingjun Zhang , Ziran Zhao , Junxiao Wang , Xiang Zou , Bozhen Zhao , Lifeng Sun , Yongqiang Wang
IPC: G01T1/20
CPC classification number: G01T1/2018 , G01V5/0016
Abstract: The present application relates to a dual energy detector and a radiation inspection system. The dual energy detector comprises: a detector module mount and a plurality of detector modules. The detector module includes a higher energy detector array and a lower energy detector array, which are juxtaposedly provided on said detector module mount to be independently irradiated. The present application may simplify the arrangement of the photodiodes and printed circuit boards to which the higher and lower energy detector arrays are connected, such that necessary thickness dimension of the detector module mount is reduced, thereby facilitating the installation and use of the dual energy detector of the present application. On the other hand, the radiation beam in the present application may be independently irradiated to the higher and lower energy detector arrays juxtaposed to each other, which reduces to certain extent the mutual restriction during selection of the higher and lower energy detector arrays.
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Patent Agency Ranking
公开(公告)号：US20180164449A1
公开(公告)日：2018-06-14
申请号：US15719571
申请日：2017-09-29
Applicant: Nuctech Company Limited , Tsinghua University
Inventor： Yuanjing Li , Ziran Zhao , Jianmin Li , Yulan Li , Weibin Zhu , Xiang Zou , Qingjun Zhang , Chunguang Zong , Xiaolin Zhao , Shuwei Li , Junxiao Wang
IPC: G01T1/24
Abstract: This disclosure provides a radiation detection apparatus and a method, a data processing method and a processor, which relates to the field of radiation detection technology. Wherein, the radiation detection apparatus of this disclosure comprises: a radiation detector which generates an electrical signal by interacting with X-rays; an Analog-to-Digital Converter (ADC) which is coupled to the radiation detector and transmits the electrical signal to a waveform data; and a data processor which receives the waveform data from the ADC, determines the number of single photon signals according to the waveform data, and determines whether an integral signal and/or a count signal of the waveform data will be used for imaging according to the number of the single photon signals.
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公开(公告)号：US20180038970A1
公开(公告)日：2018-02-08
申请号：US15597003
申请日：2017-05-16
Applicant: Tsinghua University , NUCTECH COMPANY LIMITED
Inventor： Liang Li , Zhiqiang Chen , Li Zhang , Ziran Zhao , Yuxiang Xing , Kejun Kang , Lan Zhang , Ruizhe Li
IPC: G01T7/00 , G01N23/223
CPC classification number: G01T7/005 , G01N23/223 , G01N2223/076 , G01N2223/303
Abstract: A method and apparatus for reconstructing an incident energy spectrum for a detector are disclosed. In this method, an object to be inspected is illuminated with rays, and then rays transmitted through the object to be inspected are received by the detector to convert the received rays into data of a detected energy spectrum. The incident energy spectrum for the detector is reconstructed based on the data of the energy spectrum using a statistical iterative algorithm with a pre-established detector response function. With the above solution of the embodiments, the incident energy spectrum for the detector can be more accurately acquired, thereby reducing a distortion of the incident energy spectrum caused by the detector.
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公开(公告)号：US20180038808A1
公开(公告)日：2018-02-08
申请号：US15609012
申请日：2017-05-31
Applicant: NUCTECH COMPANY LIMITED
Inventor： Zhiqiang Chen , Ziran Zhao , Jin Cui , Dong Lin , Bin Hu , Xianshun Tan , Hong Wang
IPC: G01N23/203
CPC classification number: G01N23/203 , G01V5/0025
Abstract: The present disclosure proposes a security inspection apparatus and method, relates to the technical field of radiation, wherein the security inspection apparatus of the disclosure comprises: radiation emitting device, back-scatter detector, size-distance detecting device, orientation adjusting device; the back-scatter detector located between the radiation emitting device and an inspected object; the size-distance detecting device located between the radiation emitting device and the inspected object, for detecting a size of the inspected object and/or a distance between the inspected object and the size-distance detecting device; and the orientation adjusting device adjusts orientation of the radiation emitting device according to the size of the inspected object and/or the distance from the inspected object. Such a security inspection apparatus can detect size and position information of the inspected object, and automatically adjust the position of the radiation emitting device according to the size and position of the inspected object, thereby reducing or avoiding detection dead angles, and improving accuracy of the detection.
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公开(公告)号：US09846257B2
公开(公告)日：2017-12-19
申请号：US14790947
申请日：2015-07-02
Applicant: TSINGHUA UNIVERSITY , NUCTECH COMPANY LIMITED
Inventor： Zhiqiang Chen , Ziran Zhao , Wanlong Wu , Yingkang Jin , Le Tang , Ming Ruan , Xiao Tang , Guangwei Ding
IPC: G01N23/201 , G01V5/00 , G01N23/203
CPC classification number: G01V5/0025 , G01N23/203
Abstract: The present disclosure provides a mobile back scattering imaging security inspection apparatus, comprising: a back scattering scanner (2), a detector (3), a controller (4), and a movable stage (1) configured to carry the back scattering scanner, the detector and the controller and being movable with respect to the object to be inspected; wherein the back scattering scanner is a distributed X-ray source comprising a plurality of target points (201), each of which is able to emit the ray beam individually, and wherein the back scattering scanner, the detector and the controller perform an imaging security inspection operation on the object to be inspected during moving along with the movable stage with respect to the object.
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公开(公告)号：USD804670S1
公开(公告)日：2017-12-05
申请号：US29567397
申请日：2016-06-08
Applicant: TSINGHUA UNIVERSITY , NUCTECH COMPANY LIMITED
Designer： Ziran Zhao , Wanlong Wu , Yingkang Jin , Guangwei Ding , Ming Ruan
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