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101. 发明授权

US10942290B2 X-ray detection system and method 有权
公开(公告)号：US10942290B2
公开(公告)日：2021-03-09
申请号：US16626169
申请日：2019-05-16
申请人： Nuctech Company Limited
发明人： Li Zhang , Zhiqiang Chen , Yunda Sun , Xin Jin , Ming Chang , Xiaofei Xu
IPC分类号： G01N23/20091 , G01V5/00
摘要： The present application discloses an X-ray detection system and method. The detection system includes: a beam source generator, first detectors, a second detector, a collimating device and a processor. The first detectors and the second detector are alternately arranged in a transmission direction of an object to be detected. The beam source generator emits a plurality of columns of beam signals, wherein each column of beam signals comprises a plurality of beam signals; the first detectors receive a plurality of columns of transmitted beam signals passing through the object; the collimating device performs a specificity selection from a plurality of columns of scattered beam signals passing through the object; the second detector receives scattered beam signals selected by the collimating device; and the processor determines a detection result of the object according to the plurality of columns of transmitted beam signals and the selected scattered beam signals.

102. 发明授权

US10430669B2 Methods, servers and systems for operating on security inspection data 有权
公开(公告)号：US10430669B2
公开(公告)日：2019-10-01
申请号：US15719309
申请日：2017-09-28
申请人： Nuctech Company Limited
发明人： Hu Tang , Li Zhang , Zhiqiang Chen , Jiamin Zhang
IPC分类号： G06K9/00 , H04N7/18 , H04N21/233 , H04L29/08 , G08B13/196
摘要： A method, server and system for operating on security inspection data is disclosed. In one aspect, an example method performed by a server for operating on security inspection data includes receiving an operation request for target security inspection data from a client through a network. The target security inspection data is loaded from a storage server based on the operation request. Image processing on the loaded target security inspection data is performed. The processed target security inspection data or a graphic interface including the processed target security inspection data is encoded. The encoded target security inspection data or graphic interface is transmitted to the client through the network in a video stream.

103. 发明授权

US10371648B2 Radiography systems based on distributed ray source 有权
公开(公告)号：US10371648B2
公开(公告)日：2019-08-06
申请号：US15301345
申请日：2015-12-14
申请人： NUCTECH COMPANY LIMITED
发明人： Li Zhang , Xin Jin , Huaping Tang , Qingping Huang , Yunda Sun , Zhiqiang Chen
IPC分类号： G01N23/00 , G01N23/04 , G01N23/046 , G01V5/00
摘要： The present disclosure discloses a radiography system including: a ray source, comprising a plurality of X-ray generators which are distributed on one or more planes intersected with a moving direction of an object being inspected; a detector module comprising a plurality of detection units; a data collection circuit; a controller, configured to control at least two X-ray generators of the plurality of X-ray generators in the ray source to generate X-rays alternately such that the object is scanned by the generated X-rays; and control the detector module and the data collection circuit to respectively obtain detection data corresponding to the at least two X-ray generators; and a data processing computer, configured to create images of the object being inspected in view angles of the at least two X-ray generators based on the detection data. The above embodiments may implement a multi-view-angle perspective imaging system within a single scan plane by utilizing a distributed X-ray source and reuse of the detectors.

104. 发明授权

US10262410B2 Methods and systems for inspecting goods 有权
公开(公告)号：US10262410B2
公开(公告)日：2019-04-16
申请号：US15279664
申请日：2016-09-29
申请人： NUCTECH COMPANY LIMITED
发明人： Zhiqiang Chen , Li Zhang , Ziran Zhao , Yaohong Liu , Cun Cheng , Qiang Li , Jianping Gu , Jian Zhang , Gang Fu
IPC分类号： G06T7/00 , G06K9/00 , G06K9/46 , G06Q30/00 , G06K9/32 , G06T7/11 , G06K9/18 , G06K9/62 , G06T7/136
摘要： 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.

105. 发明授权

US10217204B2 Imaging system and method of evaluating an image quality for the imaging system 有权
公开(公告)号：US10217204B2
公开(公告)日：2019-02-26
申请号：US15409738
申请日：2017-01-19
申请人： Nuctech Company Limited
发明人： Zhiqiang Chen , Yuanjing Li , Li Zhang , Ziran Zhao , Yaohong Liu , Jianping Gu , Zhiming Wang
IPC分类号： G06K9/62 , G06T5/00 , G06T7/00 , G06T3/00 , G06K9/46
摘要： A method of evaluating an image quality for an imaging system and the imaging system are provided. The method in some examples includes: acquiring an image to be evaluated which is generated by the imaging system; extracting a number of sub-images from the image; obtaining a coefficient vector indicating a degree of sparsity by applying a sparse decomposition on the sub-images based on a pre-set redundant sparse representation dictionary; and performing a linear transformation on the coefficient vector so as to obtain an evaluation value for the image quality. The sparse dictionary is learned by only using a few high quality perspective images, and then the image quality is evaluated based on the sparse degree of the image obtained by using the sparse dictionary. A convenient and rapid no-reference image quality evaluation is achieved.

106. 发明授权

US10145977B2 Method for positioning target in three-dimensional CT image and security check system 有权
公开(公告)号：US10145977B2
公开(公告)日：2018-12-04
申请号：US15300668
申请日：2015-12-15
申请人： NUCTECH COMPANY LIMITED
发明人： Zhiqiang Chen , Li Zhang , Shuo Wang , Yunda Sun , Qingping Huang , Zhi Tang
IPC分类号： G01V5/00 , G01N23/046 , G06T11/00
摘要： A method for positioning a target in a three-dimensional CT image and a security check system. The method includes: displaying a three-dimensional CT image; receiving a selection by a user of at least one area of the three-dimensional CT image at a first viewing angle to generate a first three-dimensional description; receiving a selection by the user of at least one area of the three-dimensional CT image at a second viewing angle to generate a second three-dimensional description, wherein an angle between the first viewing angle and the second viewing angle is within a predetermined range and the first three-dimensional description and the second three-dimensional description are related to a size, a location, and/or a physical property of a target at corresponding viewing angles; and determining the target in the three-dimensional CT image based on the first three-dimensional description and the second three-dimensional description.

107. 发明授权

US10013615B2 Inspection methods and devices 有权
公开(公告)号：US10013615B2
公开(公告)日：2018-07-03
申请号：US15034021
申请日：2014-11-07
申请人： Nuctech Company Limited
发明人： Li Zhang , Zhiqiang Chen , Qiang Li , Jian Zhang , Jianping Gu , Jin Cui
IPC分类号： G06K9/00 , G06K9/32 , G06K9/38 , G06K9/40 , G06K9/42 , G06K9/46 , G06K9/62
CPC分类号： G06K9/00771 , G06K9/00 , G06K9/3241 , G06K9/38 , G06K9/40 , G06K9/42 , G06K9/4642 , G06K9/627 , G06K2209/09
摘要： The present disclosure discloses an inspection method and device. The method comprises steps of acquiring a perspective image of an inspected object; processing the perspective image to obtain a region of interest; and automatically detecting the region of interest using a cigarette model, to determine whether the region of interest of the perspective image belongs to a cigarette. In the present disclosure, cigarette detection is implemented on a scanned image of goods, particularly a container, which can avoid the problem of detection vulnerability and poor effect of manual image judgment for the conventional manner, and is of significance in fighting against cigarette smuggling.

108. 发明申请

US20170068017A1 SAFETY INSPECTION APPARATUS 审中-公开
标题翻译：安全检查装置
公开(公告)号：US20170068017A1
公开(公告)日：2017-03-09
申请号：US15230316
申请日：2016-08-05
申请人： NUCTECH COMPANY LIMITED , NUCTECH JIANGSU COMPANY LIMITED
发明人： Ziran ZHAO , Zhiqiang Chen , Wanlong Wu , Li Zhang , Yingkang Jin , Ming Ruan
IPC分类号： G01V5/00
CPC分类号： G01V5/0016
摘要： A safety inspection apparatus is disclosed in embodiments of the present invention. The safety inspection apparatus includes: an x-ray source including a ray emission focal spot; and a plurality of detector modules each of which has a ray receiving surface, and which are arranged along a plurality of straight line segments. The plurality of straight line segments include a first straight line segment and two second straight line segments, and, the two second straight line segments extend from the two ends of the first straight line segment towards the x-ray source side, respectively. In a plane where the sectorial ray beam is located, a normal to the ray receiving surface of each of the detector modules at a midpoint of the ray receiving surface of the each of the detector modules passes generally through the ray emission focal spot of the x-ray source.
摘要翻译：在本发明的实施例中公开了一种安全检查装置。安全检查装置包括：x射线源，包括射线发射焦点; 以及多个检测器模块，每个检测器模块具有一个光线接收表面，并沿着多条直线段布置。多个直线段包括第一直线段和两个第二直线段，并且两个第二直线段分别从第一直线段的两端朝向x射线源侧延伸。在扇形射线束所在的平面中，每个检测器模块的射线接收表面的中点处的每个检测器模块的射线接收表面的法线通常通过x的射线发射焦斑来源。

109. 发明申请

US20210323696A1 BAGGAGE CART 有权
公开(公告)号：US20210323696A1
公开(公告)日：2021-10-21
申请号：US16336750
申请日：2019-01-04
申请人： Nuctech Company Limited
发明人： Li Zhang , Zhiqiang Chen , Qingping Huang , Wenyuan Bi , Xin Jin , Ming Chang , Mingzhi Hong , Yancai Wang
IPC分类号： B64F1/36 , B62B5/00 , G01N23/04 , B62B3/00
摘要： A baggage cart is disclosed. The baggage cart is used for security inspection in an airport, comprising: a cart body, comprising at least one compartment having a door; and a locking device, coupled to the compartment and configured to lock the compartment in response to receiving an indication signal.

110. 发明授权

US10810437B2 Security check system and method 有权
公开(公告)号：US10810437B2
公开(公告)日：2020-10-20
申请号：US15822920
申请日：2017-11-27
申请人： Nuctech Company Limited
发明人： Zhiqiang Chen , Li Zhang , Gang Peng , Zhisheng Dai , Yunda Sun , Dong Li
IPC分类号： G06K9/00 , G06K9/46 , G06K9/78 , G06T7/00 , G08B7/06
摘要： The present disclosure relates to a security check system and method. The present disclosure provides a security check system for identifying objects of interest from multiple objects, comprising: an object-of-interest determining device for determining whether an object is an object of interest; an image mark applying device for acquiring images related to selected objects among the multiple objects and recording image marks of the selected objects; and a mark detecting device for detecting the image marks, wherein the security check system is configured to identify whether the object is the object of interest based on the detection of the mark detecting device and outputs a warning accordingly.

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