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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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2.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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公开(公告)号：US20170017667A1
公开(公告)日：2017-01-19
申请号：US15282134
申请日：2016-09-30
Applicant: Tsinghua University , Nuctech Company Limited
Inventor： Zhiqiang Chen , Li ZHANG , Ziran ZHAO , Yaohong LIU , Jianping GU , Zheng HU , Qiang LI
CPC classification number: G06F17/30256 , G01N23/04 , G01N2223/401 , G01N2223/631 , G01V5/0016 , G06F17/30274 , G06K9/42 , G06K9/6215 , G06K2209/09 , G06K2209/23 , G06T7/001 , G06T7/337 , G06T2207/10116 , G06T2207/30268
Abstract: A vehicle inspection method and system are disclosed. In one aspect, the method includes acquiring a transmission image of an inspected vehicle. The method further includes acquiring a transmission image template of a vehicle model corresponding to the model of the inspected vehicle from a database. The method further includes performing registration on the transmission image of the inspected vehicle and the transmission image template. The method further includes determining a difference between a transmission image after the registration and a transmission image template after the registration, to obtain a difference area of the transmission image of the vehicle relative to the transmission image template. The method further includes processing the difference area to determine whether the vehicle carries a suspicious object or not. In some embodiments, this solution can avoid the problems of a detection loophole and a poor effect of manually determining an image in a conventional manner, and is important to assist the security inspection for small vehicles.
Abstract translation: 公开了车辆检验方法和系统。 一方面，该方法包括获取被检查车辆的发送图像。 该方法还包括从数据库中获取与被检查车辆的模型相对应的车辆模型的发送图像模板。 该方法还包括对被检查车辆的发送图像和发送图像模板进行登记。 该方法还包括确定注册之后的发送图像与注册后的发送图像模板之间的差异，以获得相对于发送图像模板的车辆的发送图像的差分区域。 该方法还包括处理差异区域以确定车辆是否携带可疑物体。 在一些实施例中，该解决方案可以避免检测漏洞的问题和以常规方式手动确定图像的差的影响，并且对于帮助小型车辆的安全检查是重要的。
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公开(公告)号：US20140185742A1
公开(公告)日：2014-07-03
申请号：US14138447
申请日：2013-12-23
Applicant: Nuctech Company Limited , Tsinghua University
Inventor： Zhiqiang CHEN , Li ZHANG , Ziran ZHAO , Qiang LI , Jianping GU , Qingping HUANG
CPC classification number: G01V5/005 , G06K9/00214 , G06K2209/09 , G06T7/11 , G06T7/187 , G06T17/00 , G06T2207/10081 , G06T2207/30112
Abstract: Disclosed are methods and apparatuses for creating a 3-Dimensional model for objects in an inspected luggage in a CT system. The method includes acquiring slice data of the luggage with the CT system; interpolating the slice data to generate 3D volume data of the luggage; performing unsupervised segmentation on the 3D volume data of the luggage to obtain a plurality of segmental regions; performing isosurface extraction on the plurality of segmental regions to obtain corresponding isosurfaces; and performing 3D surface segmentation on the isosurfaces to form a 3D model for the objects in the luggage. 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: 公开了用于在CT系统中检查的行李中的物体创建三维模型的方法和装置。 该方法包括采用CT系统获取行李的切片数据; 内插切片数据以生成行李的3D体积数据; 对行李的3D体积数据执行无监督分割以获得多个分段区域; 在多个分段区域进行等值面提取以获得相应的等值面; 并在等面上执行3D表面分割，以形成行李中物体的3D模型。 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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Patent Agency Ranking
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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7.发明申请RETRIEVING SYSTEM, RETRIEVING METHOD, AND SECURITY INSPECTION DEVICE BASED ON CONTENTS OF FLUOROSCOPIC IMAGES 审中-公开基于荧光图像内容的检索系统，检索方法和安全检查设备公开(公告)号：US20150186374A1
公开(公告)日：2015-07-02
申请号：US14580571
申请日：2014-12-23
Applicant: Nuctech Company Limited , Tsinghua University
Inventor： Yuanjing LI , Ziran ZHAO , Jian ZHANG , Qiang LI , Jianping GU
CPC classification number: G06F16/51 , G01V5/0058 , G06F16/54 , G06F16/583 , G06K9/4642 , G06K9/4671 , G06K9/4676 , G06K9/6263 , G06T7/001 , G06T7/0014 , G06T2207/10064 , G06T2207/30004 , G06T2207/30112
Abstract: Disclosed are a retrieving system and a retrieving method based on content of fluoroscopic images, the retrieving system comprising: a pre-classifying module, configured to pre-classify fluoroscopic images; an image content feature extracting module, configured to perform feature extraction for contents of the fluoroscopic images; an image representing module, configured to construct an image representation vector; a retrieving module, configured to construct a result of preliminary candidates; a diversified filtering module, configured to filter the result of preliminary candidates, select an image subset capable of covering a plurality of article categories, and thereby construct a diversified retrieval result; a correlation feedback regulating module, configured to receive information feedback on the retrieval result from a user, and update the retrieval model; and an interacting module, configured to display the retrieval result, and collect feedback on user's satisfaction of the retrieval result.
Abstract translation: 公开了一种基于荧光透视图像的内容的检索系统和检索方法，所述检索系统包括：预分类模块，被配置为预先对荧光图像进行分类; 图像内容特征提取模块，被配置为对所述透视图像的内容执行特征提取; 图像表示模块，被配置为构造图像表示向量; 检索模块，被配置为构建初步候选的结果; 多元化过滤模块，被配置为过滤初步候选的结果，选择能够覆盖多个文章类别的图像子集，从而构建多样化的检索结果; 相关反馈调节模块，被配置为从用户接收关于检索结果的信息反馈，并更新检索模型; 以及交互模块，用于显示检索结果，并收集用户对检索结果满意度的反馈。
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8.发明公开公开(公告)号：US20230144433A1
公开(公告)日：2023-05-11
申请号：US17980831
申请日：2022-11-04
Applicant: NUCTECH COMPANY LIMITED , Tsinghua University
IPC: G06V10/80 , G06V20/62 , G06V10/26 , G06V10/82 , G06F40/295
CPC classification number: G06V10/806 , G06V20/62 , G06V10/26 , G06V10/82 , G06F40/295
Abstract: Provided is a method of verifying an authenticity of declaration information. The method includes: acquiring a machine-detected radiation image obtained by scanning a container loaded with an article; acquiring a declaration information for declaring the article in the container; performing an identification on an image information of the article in the machine-detected radiation image to obtain an image feature corresponding to the machine-detected radiation image; performing an identification on a text information of the article in the declaration information to obtain a text feature corresponding to the declaration information; screening a declaration category of the article in the container by taking the image feature as an input information and the text feature as an external introduction feature; and determining that the declaration information is in doubt when a declaration category of at least one article in the container does not belong to a declaration category in the declaration information.
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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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公开(公告)号：US20170308766A1
公开(公告)日：2017-10-26
申请号：US15129389
申请日：2015-12-23
Applicant: NUCTECH COMPANY LIMITED
Inventor： Zhiqiang CHEN , Li ZHANG , Ziran ZHAO , Yaohong LIU , Duokun ZHANG , Jianping GU , Qiang LI , Jian ZHANG
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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