Patents by Inventor Xuewu Wang
Xuewu Wang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20160231453Abstract: The present application discloses a detector module, which is arranged on a detector arm, comprising one or a plurality of detector units arranged in a scattered configuration, wherein each of the detector units in the detector module is installed aiming at a beam center of a ray source, thus improving imaging quality and reducing the size of a detector frame drastically.Type: ApplicationFiled: July 22, 2014Publication date: August 11, 2016Inventors: Kejun KANG, Jianmin LI, Yuanjing LI, Yulan LI, Jingyu GU, Weizhen WANG, Quanwei SONG, Qingjun ZHANG, Shenjin MING, Xuewu WANG, Hui GONG, Tao XUE
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Publication number: 20160170073Abstract: A vehicle mounted mobile container or vehicle inspection system, including: a radiation source, a movable vehicle for carrying the inspection system, and a detector arm rack which has a horizontal arm and a vertical arm, a first end of the horizontal arm is connected to the vehicle and a second end thereof is connected to an end of the vertical arm. The horizontal arm and the vertical arm are connected by a pivotal connecting device such that the vertical arm may pivot in a vertical plane, and the horizontal arm and the vertical arm may be retracted in a same horizontal plane. The novel arm rack construction may reduce the space occupied by it on top of the scanning vehicle after the arm rack is stowed so as to reduce the eight of the scanning vehicle under running condition.Type: ApplicationFiled: December 10, 2015Publication date: June 16, 2016Inventors: Jianmin LI, Yulan LI, Jingyu GU, Yuanjing LI, Quanwei SONG, Weizhen WANG, Dongyu WANG, Zhiqiang CHEN, Chaunxiang TANG, Yinong LIU, Junli LI, Tao XUE, Hui Gong, Xuewu WANG
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Patent number: 9121811Abstract: Disclosed are a method and a device for security-inspection of liquid articles with dual-energy CT imaging. The method comprises the steps of obtaining one or more CT images including physical attributes of liquid article to be inspected by CT scanning and a dual-energy reconstruction method; acquiring the physical attributes of each liquid article from the CT image; and determining whether there are drugs concealed in the inspected liquid article based on the difference between the acquired physical attributes and reference physical attributes of the inspected liquid article. The CT scanning can be implemented by a normal CT scanning technique, or a spiral CT scanning technique. In the normal CT scanning technique, the scan position can be preset, or set by the operator with a DR image, or set by automatic analysis of the DR image.Type: GrantFiled: July 19, 2013Date of Patent: September 1, 2015Assignees: Tsinghua University, Nuctech Company LimitedInventors: Zhiqiang Chen, Li Zhang, Xuewu Wang, Haifeng Hu, Hongxin Wu, Yuanjing Li, Yinong Liu, Ziran Zhao, Yuxiang Xing, Hu Tang, Yumin Yi, Jinyu Zhang
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Publication number: 20150185164Abstract: Embodiments of the present invention disclose a nuclide identification method, a nuclide identification system, and a photoneutron emitter. The photoneutron emitter comprises: a pulsed electron accelerator configured for emitting electrons; and a photoneutron converting target configured to receive the electrons emitted by the pulsed electron accelerator and convert the electrons into photoneutrons. The photoneutron converting target has a volume of about 100 to about 8000 cm3, of about 100 to about 2500 cm3, or of about 785 cm3. These embodiments of the present invention can improve an accuracy of identification of a nuclide, and provide a practical photoneutron emitter, method and system for identifying a nuclide. Especially, these embodiments of the present invention can improve an accuracy of identification of a fissile nuclide such as 233U, 235U, and 239Pu, and provide a practical photoneutron emitter, method and system for identifying a fissile nuclide such as 233U, 235U, and 239Pu.Type: ApplicationFiled: December 19, 2014Publication date: July 2, 2015Inventors: Zhiqiang CHEN, Yigang YANG, Xuewu WANG, Qinjian ZHANG, Huaibi CHEN, Yuanjing LI
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Patent number: 8774460Abstract: A method of processing a body inspection image and a body inspection apparatus are disclosed. In one embodiment, the method may comprise recognizing a target region by means of pattern recognition, and performing privacy protection processing on the recognized target region. The target region may comprise a head and/or crotch part. According to the present disclosure, it is possible to achieve a compromise between privacy protection and body inspection.Type: GrantFiled: July 2, 2010Date of Patent: July 8, 2014Assignee: Nuctech Company LimitedInventors: Yunda Sun, Xuewu Wang, Lian Wang, Yumin Yi, Ming Chen
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Publication number: 20140010346Abstract: Disclosed are a method and a device for security-inspection of liquid articles with dual-energy CT imaging. The method comprises the steps of obtaining one or more CT images including physical attributes of liquid article to be inspected by CT scanning and a dual-energy reconstruction method; acquiring the physical attributes of each liquid article from the CT image; and determining whether there are drugs concealed in the inspected liquid article based on the difference between the acquired physical attributes and reference physical attributes of the inspected liquid article. The CT scanning can be implemented by a normal CT scanning technique, or a spiral CT scanning technique. In the normal CT scanning technique, the scan position can be preset, or set by the operator with a DR image, or set by automatic analysis of the DR image.Type: ApplicationFiled: July 19, 2013Publication date: January 9, 2014Applicants: Nuctech Company Limited, Tsinghua UniversityInventors: Zhiqiang Chen, Li Zhang, Xuewu Wang, Haifeng Hu, Hongxin Wu, Yuanjing Li, Yinong Liu, Ziran Zhao, Yuxiang Xing, Hu Tang, Yumin Yi, Jinyu Zhang
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Patent number: 8494114Abstract: Disclosed are a method and a device for security-inspection of liquid articles with dual-energy CT imaging. The method comprises the steps of obtaining one or more CT images including physical attributes of liquid article to be inspected by CT scanning and a dual-energy reconstruction method; acquiring the physical attributes of each liquid article from the CT image; and determining whether there are drugs concealed in the inspected liquid article based on the difference between the acquired physical attributes and reference physical attributes of the inspected liquid article. The CT scanning can be implemented by a normal CT scanning technique, or a spiral CT scanning technique. In the normal CT scanning technique, the scan position can be preset, or set by the operator with a DR image, or set by automatic analysis of the DR image.Type: GrantFiled: April 19, 2011Date of Patent: July 23, 2013Assignees: Tsinghua University, Nuctech Company LimitedInventors: Zhiqiang Chen, Li Zhang, Xuewu Wang, Haifeng Hu, Hongxin Wu, Yuanjing Li, Yinong Liu, Ziran Zhao, Yuxiang Xing, Hu Tang, Yumin Yi, Jinyu Zhang
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Patent number: 8477902Abstract: The present invention relates to a radiation inspection apparatus for object security inspection, comprising: a ray generator configured to emit a ray, a collimator configured to collimate the ray emitted from the ray generator, and a detector configured to receive the collimated ray collimated by the collimator, wherein the collimated ray forms an irradiated area on the detector included by an effective detect area of the detector. The present invention also relates to a method of performing a security inspection to a body using a radiation inspection apparatus. With the above technical solutions, the present invention can achieve a low single inspection absorptive dose and a micro dose inspection while meeting inspection requirements to improve public radiation security.Type: GrantFiled: June 25, 2010Date of Patent: July 2, 2013Assignees: Tsinghua University, Nuctech Company LimitedInventors: Jianmin Li, Yinong Liu, Xuewu Wang, Ziran Zhao, Lan Zhang, Yumin Yi, Ming Chen, Jinyu Zhang, Yongming Wang
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Patent number: 8320523Abstract: Disclosed are a method and a device for security-inspection of liquid articles with dual-energy CT imaging. The method comprises the steps of obtaining one or more CT images including physical attributes of liquid article to be inspected by CT scanning and a dual-energy reconstruction method; acquiring the physical attributes of each liquid article from the CT image; and determining whether the inspected liquid article is dangerous based on the physical attributes. The CT scanning can be implemented by a normal CT scanning technique, or a spiral CT scanning technique. In the normal CT scanning technique, the scan position can be preset, or set by the operator with a DR image, or set by automatic analysis of the DR image.Type: GrantFiled: July 7, 2011Date of Patent: November 27, 2012Assignees: Tshinghua University, Nuctech Company LimitedInventors: Li Zhang, Zhiqiang Chen, Xuewu Wang, Haifeng Hu, Hongxin Wu, Yuanjing Li, Yinong Liu, Ziran Zhao, Yuxiang Xing, Hu Tang, Yumin Yi, Jinyu Zhang
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Patent number: 8290230Abstract: A method for substance identification and an apparatus thereof are disclosed.Type: GrantFiled: November 14, 2008Date of Patent: October 16, 2012Assignees: Nuctech Company Limited, Tsinghua UniversityInventors: Zhiqiang Chen, Li Zhang, Kejun Kang, Xuewu Wang, Qingping Huang, Yuanjing Li, Yinong Liu, Ziran Zhao, Yongshun Xiao
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Publication number: 20120224671Abstract: The present invention relates to a radiation inspection apparatus for object security inspection, comprising: a ray generator configured to emit a ray, a collimator configured to collimate the ray emitted from the ray generator, and a detector configured to receive the collimated ray collimated by the collimator, wherein the collimated ray forms an irradiated area on the detector included by an effective detect area of the detector. The present invention also relates to a method of performing a security inspection to a body using a radiation inspection apparatus. With the above technical solutions, the present invention can achieve a low single inspection absorptive dose and a micro dose inspection while meeting inspection requirements to improve public radiation security.Type: ApplicationFiled: June 25, 2010Publication date: September 6, 2012Inventors: Jianmin Li, Yinong Liu, Xuewu Wang, Ziran Zhao, Lan Zhang, Yumin Yi, Ming Chen, Jinyu Zhang, Yongming Wang
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Publication number: 20120189165Abstract: A method of processing a body inspection image and a body inspection apparatus are disclosed. In one embodiment, the method may comprise recognizing a target region by means of pattern recognition, and performing privacy protection processing on the recognized target region. The target region may comprise a head and/or crotch part. According to the present disclosure, it is possible to achieve a compromise between privacy protection and body inspection.Type: ApplicationFiled: July 2, 2010Publication date: July 26, 2012Inventors: Yunda Sun, Xuewu Wang, Lian Wang, Yumin Yi, Ming Chen
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Patent number: 8194953Abstract: The present invention provides a method and system of material identification using binocular steroscopic and multi-energy transmission image. With the method, any obstacle that dominates the ray absorption can be peeled off from the objects that overlap in the direction of a ray beam. The object that is unobvious due to a relatively small amount of ray absorption will thus stand out, and the material property of the object, such as organic, mixture, metal and the like can be identified. This method lays a fundament for automatic identification of harmful objects, such as explosive, drugs, etc., concealed in a freight container.Type: GrantFiled: July 28, 2008Date of Patent: June 5, 2012Assignees: Nuctech Company Limited, Tsinghua UniversiyInventors: Yali Xie, Qitian Miao, Hua Peng, Kejun Kang, Haifeng Hu, Zhiqiang Chen, Xueguang Cao, Chuanxiang Tang, Jianping Gu, Xuewu Wang, Hongsheng Wen, Bei He, Yaohong Liu, Shangmin Sun, Quanwei Song, Jin Lin, Xianli Ding
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Publication number: 20110261922Abstract: Disclosed are a method and a device for security-inspection of liquid articles with dual-energy CT imaging. The method comprises the steps of obtaining one or more CT images including physical attributes of liquid article to be inspected by CT scanning and a dual-energy reconstruction method; acquiring the physical attributes of each liquid article from the CT image; and determining whether the inspected liquid article is dangerous based on the physical attributes. The CT scanning can be implemented by a normal CT scanning technique, or a spiral CT scanning technique. In the normal CT scanning technique, the scan position can be preset, or set by the operator with a DR image, or set by automatic analysis of the DR image.Type: ApplicationFiled: July 7, 2011Publication date: October 27, 2011Inventors: Li Zhang, Zhiqiang CHEN, Xuewu WANG, Haifeng HU, Hongxin WU, Yuanjing LI, Yinong LIU, Ziran ZHAO, Yuxiang XING, Hu TANG, Yumin YI, Jinyu ZHANG
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Patent number: 8036337Abstract: Disclosed are a method and a device for security-inspection of liquid articles with dual-energy CT imaging. The method comprises the steps of obtaining one or more CT images including physical attributes of liquid article to be inspected by CT scanning and a dual-energy reconstruction method; acquiring the physical attributes of each liquid article from the CT image; and determining whether the inspected liquid article is dangerous based on the physical attributes. The CT scanning can be implemented by a normal CT scanning technique, or a spiral CT scanning technique. In the normal CT scanning technique, the scan position can be preset, or set by the operator with a DR image, or set by automatic analysis of the DR image.Type: GrantFiled: September 26, 2008Date of Patent: October 11, 2011Assignees: Tsinghua University, Nuctech Company LimitedInventors: Li Zhang, Zhiqiang Chen, Xuewu Wang, Haifeng Hu, Hongxin Wu, Yuanjing Li, Yinong Liu, Ziran Zhao, Yuxiang Xing, Hu Tang, Yumin Yi, Jinyu Zhang
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Patent number: 8027429Abstract: Disclosed are a method and a device for real-time mark for a high-energy X-ray dual-energy imaging container inspection system in the radiation imaging field.Type: GrantFiled: June 26, 2009Date of Patent: September 27, 2011Assignees: Tsinghua University, Nuctech Company LimitedInventors: Haifeng Hu, Kejun Kang, Li Zhang, Xuewu Wang, Qingping Huang, Yuanjing Li, Yinong Liu, Ziran Zhao, Zhen Wu
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Publication number: 20110211671Abstract: Disclosed are a method and a device for security-inspection of liquid articles with dual-energy CT imaging. The method comprises the steps of obtaining one or more CT images including physical attributes of liquid article to be inspected by CT scanning and a dual-energy reconstruction method; acquiring the physical attributes of each liquid article from the CT image; and determining whether there are drugs concealed in the inspected liquid article based on the difference between the acquired physical attributes and reference physical attributes of the inspected liquid article. The CT scanning can be implemented by a normal CT scanning technique, or a spiral CT scanning technique. In the normal CT scanning technique, the scan position can be preset, or set by the operator with a DR image, or set by automatic analysis of the DR image.Type: ApplicationFiled: April 19, 2011Publication date: September 1, 2011Inventors: Zhiqiang Chen, Li Zhang, Xuewu Wang, Haifeng Hu, Hongxin Wu, Yuanjing Li, Yinong Liu, Ziran Zhao, Yuxiang Xing, Hu Tang, Yumin Yi, Jinyu Zhang
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Patent number: 7991112Abstract: The present invention discloses a detecting method of an article detection apparatus composed of an individual DR subsystem and an individual CT subsystem, the method comprising: obtaining a first projection data on ray attenuation coefficient by using the DR subsystem to project an A-layer of an article at a first projection angle, and obtaining a second projection data on ray attenuation coefficient by using the CT subsystem to project an A-layer of the article at a second projection angle different from the first projection angle; and judging whether an A-layer of the detected article contains a dangerous article based on the first projection data and the second projection data so as to obtain a first judgment on an A-layer of the detected article.Type: GrantFiled: December 23, 2008Date of Patent: August 2, 2011Assignees: Nuctech Company Limited, Tsinghua UniversityInventors: Zhiqiang Chen, Yuanjing Li, Yulan Li, Li Zhang, Wanlong Wu, Hua Peng, Yinong Liu, Zirao Zhao, Xuewu Wang, Shangmin Sun, Bin Sang, Hailin Wang, Quanwei Song, Jinyu Zhang
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Patent number: 7945017Abstract: Disclosed are a method and a device for security-inspection of liquid articles with dual-energy CT imaging. The method comprises the steps of obtaining one or more CT images including physical attributes of liquid article to be inspected by CT scanning and a dual-energy reconstruction method; acquiring the physical attributes of each liquid article from the CT image; and determining whether there are drugs concealed in the inspected liquid article based on the difference between the acquired physical attributes and reference physical attributes of the inspected liquid article. The CT scanning can be implemented by a normal CT scanning technique, or a spiral CT scanning technique. In the normal CT scanning technique, the scan position can be preset, or set by the operator with a DR image, or set by automatic analysis of the DR image.Type: GrantFiled: September 29, 2008Date of Patent: May 17, 2011Assignees: Tsinghua University, Nuctech Company LimitedInventors: Zhiqiang Chen, Li Zhang, Xuewu Wang, Haifeng Hu, Hongxin Wu, Yuanjing Li, Yinong Liu, Ziran Zhao, Yuxiang Xing, Hu Tang, Yumin Yi, Jinyu Zhang
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Patent number: 7838857Abstract: The present invention discloses an inspection container, comprising: a bottom and a sidewall, said bottom is coupled to one side of said sidewall to form a space, wherein, there are a plurality of protrudes set on the lower surface of said bottom. The inspection container further comprises a division part, which divides said space into a plurality of subspaces. With the solutions according to the present invention, it is possible to meet the requirement for inspecting a plurality of bottles at one time.Type: GrantFiled: September 2, 2008Date of Patent: November 23, 2010Assignees: Tsinghua University, Nuctech Company LimitedInventors: Zhiqiang Chen, Yuanjing Li, Li Zhang, Xuewu Wang, Yumin Yi, Longsong Ran, Hongxin Wu, Lian Wang, Quanwei Song, Hu Tang