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1.发明申请公开(公告)号：US20200309987A1
公开(公告)日：2020-10-01
申请号：US16314093
申请日：2017-09-12
Applicant: Nuctech Company Limited
Inventor： Guangming XU , Bicheng LIU , Ziran ZHAO , Jianping GU , Qiang LI , Lan ZHANG
IPC: G01V5/00 , G01N23/087 , G01R23/18
Abstract: The present disclosure discloses a method of substance identification of an item to be inspected using a multi-energy-spectrum X-ray imaging system, the method comprising: acquiring a transparency related vector consisting of transparency values of the item to be inspected in N energy regions, wherein N is greater than 2; calculating distances between the transparency related vector and transparency related vectors stored in the system consisting of N transparency mean values of multiple kinds of items with multiple thicknesses in the N energy regions; and identifying the item to be inspected as the item corresponding to the minimum distance. The present disclosure is based on a multi-energy-spectrum X-ray imaging system, and proposes a method of substance identification by analyzing the multi-energy-spectrum substance identification issue.
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公开(公告)号：US20170329038A1
公开(公告)日：2017-11-16
申请号：US15411348
申请日：2017-01-20
Applicant: TSINGHUA UNIVERSITY , NUCTECH COMPANY LIMITED
Inventor： Kejun KANG , Zhiqiang CHEN , Yuanjing LI , Ziran ZHAO , Junli LI , Xuewu WANG , Yaohong LIU , Zhi ZENG , Jianping GU , Song LIANG , Bicheng LIU , Guangming XU , Yongqiang WANG
IPC: G01V5/00
CPC classification number: G01V5/0016 , G01N2223/205 , G01T1/167 , G01T5/002 , G01T5/02 , G01V5/0025 , G01V5/0075 , G01V5/0091 , G06K9/6267
Abstract: The present application relates to a method, apparatus and system for inspecting an object based on a cosmic ray, pertaining to the technical field of radiometric imaging and safety inspection. The method includes: recording a movement trajectory of an inspected object by using a monitoring device; acquiring information of charged particles in the cosmic ray by using a position-sensitive detector, the information of charged particles comprising trajectory information of the charged particles; performing position coincidence for the movement trajectory and the trajectory information to determine the object; performing trajectory remodeling for the charged particles according to the information of charged particles; and identifying a material inside the moving object according to the trajectory remodeling. According to the present disclosure, pedestrians who are walking and moving are inspected by using the cosmic ray, and nuclear materials, drugs and explosive materials and the like carried by human bodies may be detected.
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公开(公告)号：US20170309043A1
公开(公告)日：2017-10-26
申请号：US15129455
申请日：2015-12-23
Applicant: Tsinghua University , NUCTECH COMPANY LIMITED
Inventor： Liang LI , Zhiqiang CHEN , Kejun KANG , Li ZHANG , Ziran ZHAO , Yuxiang XING , Yongshun XIAO , Jianping GU , Juan ZHENG
CPC classification number: G06T11/003 , G01N23/04 , G06T7/0002 , G06T11/008 , G06T2207/10081 , G06T2207/30112 , G06T2211/408
Abstract: Disclosed is a dual-energy ray imaging method and system. The method comprises: calculating the mass thicknesses of the materials in the overlapped area of two materials by using a calibrated surface fitting method, and then decomposing a pair of original high-energy and low-energy data for this pixel into two high-low-energy data sets corresponding to the two materials, and finally calculating and acquiring the composition result of different materials for each pixel. The disclosure is especially advantageous in that the problem of error recognition of materials due to the two overlapped materials can be eliminated and the stratified imaging of multiple materials can be achieved, thereby improving the accuracy of the substance recognition and reducing the rate of false positive and false negative which is very important to the applications in the field of security check and anti-smuggling.
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公开(公告)号：US20190317240A1
公开(公告)日：2019-10-17
申请号：US16467140
申请日：2017-08-04
Applicant: NUCTECH COMPANY LIMITED
Inventor： Zhiqiang CHEN , Ziran ZHAO , Yaohong LIU , Jianping GU , Qian YI , Bicheng LIU , Guangming XU
IPC: G01V5/00 , G01N23/046
Abstract: 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 configured to carry an object to be inspected, the inspection station defining an inspection space which is located above the inspection station and is used for accommodating the object to be inspected; a rotational supporting apparatus which is disposed around the inspection space in a plane parallel to a first direction and is rotatable around the inspection space in a detection state; a plurality of X-ray sources located on the rotational supporting apparatus and configured to transmit X-rays to pass through the inspection space; and a plurality of X-ray receiving apparatuses in one-to-one correspondence to the plurality of X-ray sources, the plurality of X-ray receiving apparatuses being located on the rotational supporting apparatus opposite to the plurality of X-ray sources respectively and configured to collect the X-rays passing through the inspection space, wherein the plurality of X-ray sources and the plurality of X-ray receiving apparatuses are rotational synchronously with the rotational supporting apparatus.
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公开(公告)号：US20180062021A1
公开(公告)日：2018-03-01
申请号：US15625473
申请日：2017-06-16
Applicant: NUCTECH COMPANY LIMITED
Inventor： Lan ZHANG , Yingshuai DU , Bo LI , Zonggui WU , Jun LI , Xuepeng CAO , Haifan HU , Jianping GU , Guangming XU , Bicheng LIU
IPC: H01L31/118 , G01T1/02 , H01L31/0296 , H01L31/028 , H01L31/032 , H01L31/0304 , H01L31/0224 , H01L27/144
CPC classification number: H01L31/118 , G01T1/026 , G01T1/241 , H01L27/1446 , H01L31/022408 , H01L31/022416 , H01L31/028 , H01L31/0296 , H01L31/02966 , H01L31/0304 , H01L31/032
Abstract: There is provided a semiconductor detector. According to an embodiment, the semiconductor detector may include a semiconductor detection material including a first side and a second side opposite to each other. One of the first side and the second side is a ray incident side that receives incident rays. The detector may further include a plurality of pixel cathodes disposed on the first side and a plurality of pixel anodes disposed on the second side. The pixel anodes and the pixel cathodes correspond to each other one by one. The detector may further include a barrier electrode disposed on a periphery of respective one of the pixel cathodes or pixel anodes on the ray incident side. According to the embodiment of the present disclosure, it is possible to effectively suppress charge sharing between the pixels and thus to improve an imaging resolution of the detector.
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Patent Agency Ranking
公开(公告)号：US20170329039A1
公开(公告)日：2017-11-16
申请号：US15411359
申请日：2017-01-20
Applicant: TSINGHUA UNIVERSITY , NUCTECH COMPANY LIMITED
Inventor： Kejun KANG , Jianping CHENG , Zhiqiang CHEN , Ziran ZHAO , Junli LI , Xuewu WANG , Zhi ZENG , Qingjun ZHANG , Jianping GU , Xi YI , Bicheng LIU , Guangming XU , Yongqiang WANG
IPC: G01V5/00
CPC classification number: G01V5/0075 , G01V5/0016 , G01V5/0091
Abstract: The present disclosure relates to a method, a device and a system for inspecting a moving object based on cosmic rays, pertaining to the field of radiation imaging and safety inspection techniques. The method includes: detecting whether a speed of the inspected moving object is within a preset range; recording a motion trajectory of the moving object with a monitoring device; acquiring information about charged particles in the cosmic rays with a position sensitive detector, the information about charged particles including track information of the charged particles; determining the moving object by matching positions of the motion trajectory and the track information; reconstructing the track of the charged particles according to the information about the charged particles; and recognizing the material inside the moving object based on the track reconstruction.
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公开(公告)号：US20170140526A1
公开(公告)日：2017-05-18
申请号：US15279664
申请日：2016-09-29
Applicant: NUCTECH COMPANY LIMITED
Inventor： Zhiqiang CHEN , Li ZHANG , Ziran ZHAO , Yaohong LIU , Cun CHENG , Qiang LI , Jianping GU , Jian ZHANG , Gang FU
CPC classification number: G06T7/0008 , G06K9/00771 , G06K9/18 , G06K9/3233 , G06K9/4604 , G06K9/4671 , G06K9/6215 , G06K2209/09 , G06Q30/018 , G06T7/11 , G06T7/136 , G06T2207/10116
Abstract: The present disclosure provides a method and a system for inspecting goods. The method includes the steps of: obtaining a transmission image and a HSCODE of inspected goods; processing the transmission image to obtain a region of interest; retrieving from a model library a model created based on the HSCODE, in accordance with the HSCODE of the inspected goods; and determining whether there are any goods not registered in a customs declaration that are contained in the region of interest based on the model. With the above solution, it is possible to inspect goods in a container efficiently, so as to find out whether there are goods not indicated in the customs declaration that are concealed in the container.
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公开(公告)号：US20160189360A1
公开(公告)日：2016-06-30
申请号：US14700249
申请日：2015-04-30
Applicant: Tsinghua University , Nuctech Company Limited
Inventor： Kejun KANG , Zhiqiang CHEN , Li ZHANG , Ziran ZHAO , Yaohong LIU , Jian ZHANG , Jianping GU , Qiang LI , Duokun ZHANG
CPC classification number: G06T7/0004 , G01N23/04 , G01V5/0016 , G06K9/4604 , G06K9/4642 , G06K9/52 , G06K9/6215 , G06K9/6256 , G06K2009/4666
Abstract: The present disclosure discloses a method and system for inspecting cargoes. The method comprises: acquiring a transmission image of the inspected cargoes; processing the transmission image to acquire an interested region; extracting features from the interested region, and determining cargo information of the inspected cargoes according to the extracted features; and providing a proposed treatment suggestion of the cargoes based on the determined cargo information and at least a part of information in a manifest. The above solution can facilitate an image judgment person to accurately judge whether the concerned cargoes are allowed to pass.
Abstract translation: 本公开公开了一种用于检查货物的方法和系统。 该方法包括：获取被检货物的透射图像; 处理所述传输图像以获取感兴趣的区域; 从感兴趣区域提取特征，并根据提取的特征确定被检货物的货物信息; 并根据确定的货物信息和清单中的至少一部分信息提供货物的拟议处理建议。 上述解决方案可以方便图像判断人员准确判断有关货物是否允许通过。
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9.发明申请VEHICLE INSPECTION SYSTEM AND METHOD WITH VEHICLE REFERENCE IMAGE RETRIEVAL AND COMPARISON FUNCTION 有权车辆检查系统及车辆参考图像检索与比较功能的方法公开(公告)号：US20160178790A1
公开(公告)日：2016-06-23
申请号：US14970679
申请日：2015-12-16
Applicant: Nuctech Company Limited
Inventor： Jianmin LI , Ying LI , Yulan LI , Jianping GU , Yuanjing LI , Zhiqiang CHEN
CPC classification number: G01V5/0016 , G01N23/04 , G01N2223/639 , G01V5/0008 , G06K9/00624 , G06K9/52 , G06K9/6215 , G06K2209/09 , G06K2209/23 , G06T7/001 , G06T7/60 , G06T7/74 , G06T2207/10116 , G06T2207/30112 , G06T2207/30248 , G06T2207/30268
Abstract: A vehicle inspection method is disclosed, comprising steps of: implementing a ray scanning inspection on an inspected vehicle, so as to obtain a ray scanning inspection image of the inspected vehicle; extracting vehicle characteristic information; comparing the vehicle characteristic information of the inspected vehicle to vehicle reference characteristics stored in a database, selecting a closest vehicle reference characteristic which is closest to the vehicle characteristic information, and finding out a closest ray transmission reference image on the basis of a corresponding relationship between the vehicle reference characteristics and ray transmission reference images stored in the storage unit; determining a first distinguishing area of the ray scanning inspection image from the closest ray transmission reference image by comparing the ray scanning inspection image of the inspected vehicle to the closest ray transmission reference image. A vehicle inspection system is also disclosed.
Abstract translation: 公开了一种车辆检查方法，包括以下步骤：对被检查车辆进行射线扫描检查，以获得被检查车辆的射线扫描检查图像; 提取车辆特征信息; 将被检查车辆的车辆特性信息与存储在数据库中的车辆参考特征进行比较，选择最接近车辆特性信息的最近车辆基准特性，并且基于相应的关系来找出最近的射线发射参考图像 存储在存储单元中的车辆参考特性和射线透射参考图像; 通过将检查车辆的射线扫描检查图像与最近的射线透射参考图像进行比较，从最近的射线透射参考图像确定射线扫描检查图像的第一区域。 还公开了车辆检查系统。
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公开(公告)号：US20180195979A1
公开(公告)日：2018-07-12
申请号：US15865520
申请日：2018-01-09
Applicant: Nuctech Company Limited , Tsinghua University
Inventor： Qiang LI , Jianping GU , Bin XU , Yaohong LIU , Ziran ZHAO
IPC: G01N23/046 , G01N23/041 , G01V5/00
Abstract: A method for inspecting a container and an inspection device are disclosed. X-ray scanning is performed on the inspected container to obtain a scanned image. The scanned image is processed to obtain a region of interest. Features of texture units included in the region of interest are calculated. Local descriptions of the texture units are formed based on the features of the texture units. Distinction of each local point is calculated from a local description of each of the texture units so as to obtain a local distinct map of the region of interest. It is determined whether there is an article which is secretly carried in the inspected container using the local distinct map.
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