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公开(公告)号：US10145977B2
公开(公告)日：2018-12-04
申请号：US15300668
申请日：2015-12-15
Applicant: NUCTECH COMPANY LIMITED
Inventor： Zhiqiang Chen , Li Zhang , Shuo Wang , Yunda Sun , Qingping Huang , Zhi Tang
IPC: G01V5/00 , G01N23/046 , G06T11/00
Abstract: 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.
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公开(公告)号：US10818464B2
公开(公告)日：2020-10-27
申请号：US16728783
申请日：2019-12-27
Applicant: Nuctech Company Limited , Tsinghua University
Inventor： Wenhui Huang , Qingxiu Jin , Cong Xu , Luming Zhang , Donghai Liu , Cheng Song , Peidong Wu , Qun Luo , Chengjun Tan , Shuo Wang
IPC: H01J3/02
Abstract: An external grid-controlled hot cathode array electron gun, including an insulated cathode base, a filament, a plurality of hot cathode emission elements, and a grid-controlled structure is disclosed. In one aspect, the grid-controlled structure includes an insulated grid-controlled structure body and a plurality of through holes. One side of the grid-controlled structure body abuts against the cathode base to clamp the filament between the grid-controlled structure body and the cathode base and the plurality of hot cathode emission elements are inserted into the plurality of through holes respectively.
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公开(公告)号：US09978184B2
公开(公告)日：2018-05-22
申请号：US14540440
申请日：2014-11-13
Applicant: Tsinghua University , Nuctech Company Limited
Inventor： Zhiqiang Chen , Yuanjing Li , Ziran Zhao , Shuo Wang , Jianping Gu , Yunda Sun
CPC classification number: G06T19/20 , G06T7/0012 , G06T15/06 , G06T15/08 , G06T15/10 , G06T17/005 , G06T2207/10136 , G06T2210/12 , G06T2219/2021
Abstract: The present disclosure provides method and apparatus for marking a target in a 3D image. The method include steps of: acquiring Computed Tomography (CT) image data of a scene; rendering a 3D image of the scene using ray casting based on the CT image data; removing a transparent region from the 3D image based on a fixed 2D transfer function; and marking the target in the 3D image.
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公开(公告)号：US11330695B2
公开(公告)日：2022-05-10
申请号：US16931261
申请日：2020-07-16
Applicant: Tsinghua University , Nuctech Company Limited
Inventor： Chengjun Tan , Wenhui Huang , Qingxiu Jin , Chuanxiang Tang , Donghai Liu , Qun Luo , Peidong Wu , Cheng Song , Yunze Ding , Cong Xu , Luming Zhang , Shuo Wang
Abstract: An arrayed X-ray source and an X-ray imaging apparatus are described. An example X-ray source includes a housing and X-ray generators located in the housing. The X-ray generators are arranged in an array. The X-ray generators are provided separately from each other and configured to emit X-rays independently of each other.
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公开(公告)号：US09786070B2
公开(公告)日：2017-10-10
申请号：US14748383
申请日：2015-06-24
Applicant: Nuctech Company Limited
Inventor： Zhiqiang Chen , Li Zhang , Shuo Wang , Yunda Sun , Qingping Huang , Zhi Tang
IPC: G06K9/00 , G06T11/20 , G06K9/46 , G06T15/20 , G06K9/52 , G06T7/60 , G06K9/62 , G01V5/00 , G06T7/73 , G06T7/50
CPC classification number: G06T11/20 , G01V5/0008 , G01V5/005 , G06K9/46 , G06K9/52 , G06K9/6218 , G06K2009/4666 , G06T7/50 , G06T7/60 , G06T7/75 , G06T15/005 , G06T15/20 , G06T19/20
Abstract: A CT system for security check and a method thereof are provided. The method includes: reading inspection data of an inspected object; inserting at least one three-dimensional (3D) Fictional Threat Image (FTI) into a 3D inspection image of the inspected object, which is obtained from the inspection data; receiving a selection of at least one region in the 3D inspection image including the 3D FTI or at least one region in a two-dimensional (2D) inspection image including a 2D FTI corresponding to the 3D FTI, wherein the 2D inspection image is obtained from the 3D inspection image or is obtained from the inspection data; and providing a feedback of the 3D inspection image including at least one 3D FTI in response to the selection. With the above solution, it is convenient for a user to rapidly mark a suspected object in the CT image, and provides a feedback of whether a FTI is included.
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Patent Agency Ranking
公开(公告)号：US09324125B2
公开(公告)日：2016-04-26
申请号：US14540413
申请日：2014-11-13
Applicant: Tsinghua University , Nuctech Company Limited
Inventor： Ziran Zhao , Li Zhang , Zhiqiang Chen , Shuo Wang , Jianping Gu , Yunda Sun
IPC: G06K9/00 , G06T1/00 , G06T15/08 , G06T1/20 , G06T3/40 , G06T7/00 , G06T11/00 , G06T15/04 , G06T15/06 , G06T15/20 , G06T15/40 , G06T15/60 , G06T15/80
CPC classification number: G06T1/0007 , G06T1/20 , G06T3/403 , G06T11/001 , G06T11/008 , G06T15/04 , G06T15/06 , G06T15/08 , G06T15/205 , G06T15/405 , G06T15/60 , G06T15/80 , G06T2200/04 , G06T2200/08 , G06T2200/28 , G06T2207/10072 , G06T2207/10081 , G06T2210/04 , G06T2215/12 , G06T2219/2008
Abstract: The present disclosure provides a method for rendering of CT image data. The method includes acquiring 2D image data of a background and 2D image data of a target; rendering the 2D image data of the target into a 3D image of the target to obtain a first hit position of a ray; rendering the 2D image data of the background into a 3D image of the background; adjusting the 3D image of the background based on the first hit position; and synthetically rendering the 3D image of the background and the 3D image of the target. The present disclosure also provides apparatus for implementing the method.
Abstract translation: 本公开提供了一种用于呈现CT图像数据的方法。 该方法包括获取背景的2D图像数据和目标的2D图像数据; 将目标的2D图像数据呈现为目标的3D图像，以获得射线的第一命中位置; 将背景的2D图像数据呈现为背景的3D图像; 基于第一命中位置调整背景的3D图像; 并综合渲染背景的3D图像和目标的3D图像。 本公开还提供了用于实现该方法的装置。
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公开(公告)号：US20210084739A1
公开(公告)日：2021-03-18
申请号：US16931261
申请日：2020-07-16
Applicant: Tsinghua University , Nuctech Company Limited
Inventor： Chengjun Tan , Wenhui Huang , Qingxiu Jin , Chuanxiang Tang , Donghai Liu , Qun Luo , Peidong Wu , Cheng Song , Yunze Ding , Cong Xu , Luming Zhang , Shuo Wang
Abstract: An arrayed X-ray source and an X-ray imaging apparatus are described. An example X-ray source includes a housing and X-ray generators located in the housing. The X-ray generators are arranged in an array. The X-ray generators are provided separately from each other and configured to emit X-rays independently of each other.
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公开(公告)号：US20200211806A1
公开(公告)日：2020-07-02
申请号：US16728783
申请日：2019-12-27
Applicant: Nuctech Company Limited , Tsinghua University
Inventor： Wenhui Huang , Qingxiu Jin , Cong Xu , Luming Zhang , Donghai Liu , Cheng Song , Peidong Wu , Qun Luo , Chengjun Tan , Shuo Wang
IPC: H01J3/02
Abstract: An external grid-controlled hot cathode array electron gun, including an insulated cathode base, a filament, a plurality of hot cathode emission elements, and a grid-controlled structure is disclosed. In one aspect, the grid-controlled structure includes an insulated grid-controlled structure body and a plurality of through holes. One side of the grid-controlled structure body abuts against the cathode base to clamp the filament between the grid-controlled structure body and the cathode base and the plurality of hot cathode emission elements are inserted into the plurality of through holes respectively.
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9.发明授权公开(公告)号：US10373701B2
公开(公告)日：2019-08-06
申请号：US14540457
申请日：2014-11-13
Applicant: Nuctech Company Limited
Inventor： Zhiqiang Chen , Yuanjing Li , Li Zhang , Ziran Zhao , Jianping Gu , Shuo Wang
Abstract: Disclosed is method and apparatus for creating a statistical average model of an enamel-dentine junction. The method includes steps of acquiring CT image data of a tooth; segmenting the CT image data to obtain a surface of an enamel-dentine junction; segmenting the obtained surface using a curvature-based clustering algorithm to remove a bottom of the enamel-dentine junction; spherical-parameterizing, by means of spherical harmonic analysis, the surface of the enamel-dentine junction after removal of the bottom; and aligning different samples of the tooth to obtain a statistical average model.
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10.发明授权公开(公告)号：US10353110B2
公开(公告)日：2019-07-16
申请号：US15301060
申请日：2015-12-16
Applicant: TSINGHUA UNIVERSITY , Nuctech Company Limited
Inventor： Li Zhang , Shuo Wang , Yunda Sun , Qingping Huang
Abstract: The present disclosure provides a method and device for operating a CT-based three-dimensional image used for security inspection. The method includes: providing a CT-based three-dimensional image used for security inspection; accepting a selection of an image of an object in the three-dimensional image; and responding to the selection. The present disclosure has strong practicality, and can provide effective reference information for image judgment in the CT-based security inspection field.
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