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公开(公告)号：US20170178312A1
公开(公告)日：2017-06-22
申请号：US15278101
申请日：2016-09-28
Applicant: Tsinghua University , NUCTECH COMPANY LIMITED
Inventor： Yuanjing LI , Ziran ZHAO , Yaohong LIU , Qili WANG , Qiang LI , Jianping GU
CPC classification number: G06T7/0004 , G01N23/04 , G01N2223/401 , G01N2223/626 , G06K9/48 , G06T7/0085 , G06T7/13 , G06T7/40 , G06T2207/10116
Abstract: The present disclosure provides a method and a system for inspecting goods. The method comprises steps of: obtaining a transmission image of inspected goods; processing the transmission image to obtain a suspicious region; extracting local texture features of the suspicious region and classifying the local texture features of the suspicious region based on a pre-created model to obtain a classification result; extracting a contour line shape feature of the suspicious region and comparing the contour line shape feature with a pre-created standard template to obtain a comparison result; and determining that the suspicious region contains a high atomic number matter based on the classification result and the comparison result.
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公开(公告)号：US20160335503A1
公开(公告)日：2016-11-17
申请号：US15034021
申请日：2014-11-11
Applicant: NUCTECH COMPANY LIMITED
Inventor： Li ZHANG , Zhiqiang CHEN , Qiang LI , Jian ZHANG , Jianping GU , Jin CUI
CPC classification number: G06K9/00771 , G06K9/00 , G06K9/3241 , G06K9/38 , G06K9/40 , G06K9/42 , G06K9/4642 , G06K9/627 , G06K2209/09
Abstract: 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.
Abstract translation: 本公开公开了一种检查方法和装置。 该方法包括获取被检查对象的透视图像的步骤; 处理透视图以获得感兴趣的区域; 并使用香烟模型自动检测感兴趣区域，以确定透视图像的感兴趣区域是否属于香烟。 在本公开中，香烟检测在商品的扫描图像，特别是容器上实现，其可以避免检测脆弱性的问题以及常规方式的手动图像判断的差的影响，并且对于打击卷烟走私具有重要意义。
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23.发明申请公开(公告)号：US20160321816A1
公开(公告)日：2016-11-03
申请号：US15204564
申请日：2016-07-07
Applicant: TSINGHUA UNIVERSITY , NUCTECH COMPANY LIMITED
Inventor： Zhiqiang CHEN , Li ZHANG , Ziran ZHAO , Qingping HUANG , Qiang LI , Jianping GU , Yunda SUN
CPC classification number: G06T7/596 , G06K9/00201 , G06K9/00523 , G06K9/00536 , G06K9/6215 , G06K9/627 , G06K2209/09 , G06T7/0004 , G06T7/68 , G06T11/008 , G06T2207/10081 , G06T2207/30112 , G06T2211/408
Abstract: Methods for extracting a shape feature of an object and security inspection methods and apparatuses. Use is made of CT's capability of obtaining a 3D structure. The shape of an object in an inspected luggage is used as a feature of a suspicious object in combination with a material property of the object. For example, a false alarm rate in detection of suspicious explosives may be reduced.
Abstract translation: 用于提取对象的形状特征的方法和安全检查方法和装置。 使用CT可以获得3D结构。 检查行李中的物体的形状被用作可疑物体的特征，与物体的材料属性相结合。 例如，可能会减少检测可疑炸药的误报率。
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公开(公告)号：US20150332448A1
公开(公告)日：2015-11-19
申请号：US14138399
申请日：2013-12-23
Applicant: Nuctech Company Limited , Tsinghua University
Inventor： Li ZHANG , Zhiqiang CHEN , Ziran ZHAO , Qiang LI , Jianping GU , Yunda SUN
CPC classification number: G06T7/0004 , G01V5/005 , G06K9/00201 , G06T7/0002 , G06T15/08 , G06T2200/04 , G06T2207/10116 , G06T2207/30112
Abstract: Disclosed are object detection method, display methods and apparatuses. The method includes obtaining slice data of inspected luggage in the CT system; generating 3D volume data of objects in the luggage from the slice data; for each object, determining a semantic description including at least a quantifier description of the object based on the 3D volume data; and upon reception of a user selection of an object, presenting the semantic description of the selected object while displaying a 3D image of the object. The above solutions can create a 3D model for objects in the inspected luggage in a relatively accurate manner, and thus provide better basis for subsequent shape feature extraction and security inspection, and reduce omission factor.
Abstract translation: 本发明涉及物体检测方法，显示方法和装置。 该方法包括在CT系统中获取检验行李的切片数据; 从切片数据生成行李中物体的3D体积数据; 对于每个对象，基于3D体积数据确定至少包括对象的量词描述的语义描述; 并且在接收到对象的用户选择时，在显示对象的3D图像的同时呈现所选对象的语义描述。 上述解决方案可以以相对准确的方式为被检查行李中的对象创建3D模型，从而为随后的形状特征提取和安全检查提供更好的依据，并减少遗漏因素。
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25.发明申请RAMAN SPECTROSCOPY METHOD OF MEASURING MELAMINE CONTENTS IN DAIRY PRODUCTS HAVING DIFFERENT MATRIXES 有权拉曼光谱法测定具有不同基质的奶制品中的麦芽糖含量公开(公告)号：US20140320855A1
公开(公告)日：2014-10-30
申请号：US14145454
申请日：2013-12-31
Applicant: Tsinghua University , Nuctech Company Limited
Inventor： Zhiqiang CHEN , Li ZHANG , Jianhong ZHANG , Hongqiu WANG , Ziran ZHAO , Jianping GU , Zhiming WANG , Qingping HUANG , Yumin YI
IPC: G01N21/65
CPC classification number: G01N21/65
Abstract: A raman spectroscopy method of measuring melamine contents in dairy products having different matrixes. The method includes: (a) establishing a database of characteristic curves of dairy products having different matrixes; (b) taking several copies of the dairy products having one certain unknown matrix and adding melamine standard solutions having different concentrations therein, to obtain a series of dairy product samples in which the relative concentrations of the melamine are known; (c) performing raman spectrum testing analysis and obtaining corresponding characteristic peak intensities to obtain a slope of the characteristic curve showing variation of the characteristic peak intensities with the relative concentrations of the melamine; (d) searching the database of step (a) using the slope of the characteristic curve of the dairy product samples to find a matching characteristic curve, and (e) calculating concentration of melamine in the dairy products by using the matched characteristic curve and the characteristic peak intensity.
Abstract translation: 测量具有不同基质的乳制品中三聚氰胺含量的拉曼光谱法。 该方法包括：（a）建立具有不同矩阵的乳制品特征曲线数据库; （b）取几份具有一定未知基质的乳制品，并加入其中浓度不同的三聚氰胺标准溶液，以获得其中已知三聚氰胺的相对浓度的一系列乳制品样品; （c）进行拉曼光谱测试分析并获得相应的特征峰强度，以获得特征曲线的斜率，显示特征峰强度与三聚氰胺的相对浓度的变化; （d）使用奶制品样本的特征曲线的斜率来搜索步骤（a）的数据库，以找到匹配的特征曲线，以及（e）通过使用匹配的特征曲线计算乳制品中三聚氰胺的浓度， 特征峰强度。
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Patent Agency Ranking
26.发明公开公开(公告)号：US20230206463A1
公开(公告)日：2023-06-29
申请号：US18088433
申请日：2022-12-23
Inventor： Ziran ZHAO , Jianping GU , Yingxin WANG , Shaoming YUAN , Li GU , Yitao JIAO
CPC classification number: G06T7/20 , G06V10/44 , G06V10/761 , G01N23/04 , G06V2201/07 , G06T2207/30112 , G06T2207/30196
Abstract: Provided are a method and a device of binding security inspection information, an electronic apparatus and a storage medium, which may be applied to the field of security inspection technology. In the method of binding security inspection information of the present disclosure, the pedestrian detection frame is acquired by detecting the video stream, and each pedestrian detection frame has the coordinate information and the tracking information. According to the coordinate information and the tracking information of the pedestrian detection frame, the baggage security inspection information, the pedestrian security inspection information, and the identity information are bound to acquire all security inspection information of a detected person, so that a security inspection efficiency is improved.
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公开(公告)号：US20190156139A1
公开(公告)日：2019-05-23
申请号：US16255738
申请日：2019-01-23
Applicant: NUCTECH COMPANY LIMITED
Inventor： Zhiqiang CHEN , Li ZHANG , Ziran ZHAO , Yaohong LIU , Duokun ZHANG , Jianping GU , Qiang LI , Jian ZHANG
IPC: G06K9/32 , G01N23/046 , G01V5/00
CPC classification number: G06K9/3241 , G01N23/046 , G01V5/0016 , G01V5/005
Abstract: An inspection method and system for inspecting whether there is any liquor in goods is provided. The method includes: acquiring a radiation image of goods being inspected; processing on the radiation image to obtain an ROI; inspecting on the ROI using a liquor goods inspection model to determine if the ROI of the radiation image contains liquor goods. The above solution performs liquor inspection on scanned images of goods, especially containers, so as to intelligently assist the image inspectors.
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公开(公告)号：US20190035116A1
公开(公告)日：2019-01-31
申请号：US16045303
申请日：2018-07-25
Applicant: Tsinghua University , NUCTECH COMPANY LIMITED
Inventor： Yuxiang XING , Li ZHANG , Jianmin LI , Zhiqiang CHEN , Jianping GU
Abstract: A method and device for reconstructing a CT image and a storage medium are disclosed. CT scanning is performed on an object to be inspected to obtain projection data. The projection data is processed using a first convolutional neural network to obtain processed projection data. The first convolutional neural network comprises a plurality of convolutional layers. A back-projection operation is performed on the processed projection data to obtain a reconstructed image.
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29.发明申请公开(公告)号：US20180328866A1
公开(公告)日：2018-11-15
申请号：US16029896
申请日：2018-07-09
Applicant: Nuctech Company Limited
Inventor： Kejun KANG , Zhiqiang CHEN , Yuanjing LI , Li ZHANG , Ziran ZHAO , Yaohong LIU , Jianping GU , Liang LI , Yuxiang XING
IPC: G01N23/046 , G01V5/00
CPC classification number: G01N23/046 , G01V5/005
Abstract: The present disclosure provides a low-angle self-swinging type computed tomography (CT) apparatus, which is provided with an X-ray accelerator and a plurality of rows of detectors and is configured to include a slip ring, such that the slip ring with the accelerator and the detectors thereon is capable of performing a single-pendulum reciprocating movement while an objected to be inspected passes through the slip ring, a three dimension CT image of the object is displayed, thereby achieving accurate inspection for large-scale objects, such as van containers.
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公开(公告)号：US20170024862A1
公开(公告)日：2017-01-26
申请号：US15217613
申请日：2016-07-22
Applicant: Tsinghua University , Nuctech Company Limited
Inventor： Kejun KANG , Zhiqiang CHEN , Yuanjing LI , Li ZHANG , Ziran ZHAO , Yaohong LIU , Jianping GU , Zhiming WANG
CPC classification number: G06T5/003 , G06T7/00 , G06T2207/10116 , G06T2207/20021 , G06T2207/20076 , G06T2207/30168
Abstract: The present disclosure relates to a method and device for estimating a point spread function. In one implementation, a method includes capturing, by a scanning device, an image by scanning a plurality of rectangle blocks which are same sized and closely arranged, wherein the plurality of rectangle blocks are made of different materials and/or have different mass thicknesses, and an incident direction of rays is perpendicular to a scanning direction and a surface of the plurality of rectangle blocks arranged closely during scanning; obtaining line spread functions for two directions along a length side and a width side of each of the rectangle blocks based on the scanned image, and obtaining standard deviation parameters of the line spread functions; and combining the standard deviation parameters for the two directions to obtain a two dimensional Point Spread Function (PSF) parameter so as to estimate the point spread function.
Abstract translation: 本公开涉及一种用于估计点扩散函数的方法和装置。 在一个实现中，一种方法包括通过扫描与尺寸相同并且紧密排列的多个矩形块来扫描图像，其中多个矩形块由不同的材料制成和/或具有不同的质量厚度， 并且光线的入射方向垂直于扫描方向，并且所述多个矩形块的表面在扫描期间被紧密排列; 基于扫描图像，沿矩形块的长度侧和宽度侧的两个方向获得线扩展函数，并获得线扩展函数的标准偏差参数; 并组合两个方向的标准偏差参数以获得二维点扩展函数（PSF）参数，以估计点扩散函数。
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