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公开(公告)号：US10607483B2
公开(公告)日：2020-03-31
申请号：US15300947
申请日：2015-12-23
Applicant: Nuctech Company Limited , Tsinghua University
Inventor： Zhiqiang Chen , Li Zhang , Jianmin Li , Ziran Zhao , Yaohong Liu , Qiang Li , Zheng Hu , Jianping Gu , Ying Li
Abstract: Disclosed is a vehicle identification method and system. The method includes: acquiring appearance information of an inspected vehicle; obtaining external features of the vehicle based on the appearance information; acquiring a transmission image of the vehicle and obtaining internal features of the vehicle from the transmission image; forming descriptions on the vehicle at least based on the external features and the internal features; and determining a vehicle model of the vehicle from a vehicle model databased by utilizing the descriptions. This method merges various types of modality information, especially introducing the transmission image, and combines the internal structure information with the appearance information, so that the present disclosure can identify a vehicle model more practically.
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公开(公告)号：US10586324B2
公开(公告)日：2020-03-10
申请号：US15827722
申请日：2017-11-30
Applicant: Nuctech Company Limited
Inventor： Ziran Zhao , Jianping Gu , Qian Yi , Bicheng Liu
Abstract: The present disclosure discloses an inspection device and a method for inspecting a container. Transmission scanning is performed on the inspected container using a scanning device including a sparse area array detector to obtain scan data. Digital focusing is performed at a specific depth position in a depth direction. Defocused pixel values are filtered out to obtain a slice image at the specific depth position. It is judged whether dangerous articles or suspicious articles are included in the slice image.
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公开(公告)号：US10332244B2
公开(公告)日：2019-06-25
申请号：US15610930
申请日：2017-06-01
Applicant: Nuctech Company Limited
Inventor： Zhiqiang Chen , Yuanjing Li , Ziran Zhao , Yaohong Liu , Jianping Gu , Zhiming Wang
IPC: G06T7/00
Abstract: A method and an apparatus for estimating an image fuzziness are provided. The method may comprise: acquiring an image; obtaining a multi-scale representation of the image by performing a multi-scale transform on the image; calculating gradients of the image and a normalized histogram of the gradients at each scale based on the multi-scale representation; calculating error vectors between the normalized histogram of gradients at each scale and a normalized original histogram of gradients of the image; performing a weighted summing on the error vectors by using respective weights to obtain a summed result, wherein the weights are determined based on a reciprocal of the sums of squares of the gradients of the image at each scale; estimating the ambiguity of the image based on the summed result.
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公开(公告)号：US10295679B2
公开(公告)日：2019-05-21
申请号：US15609476
申请日：2017-05-31
Applicant: NUCTECH COMPANY LIMITED
Inventor： Lan Zhang , Yingshuai Du , Bo Li , Zonggui Wu , Jun Li , Xuepeng Cao , Haifan Hu , Jianping Gu , Guangming Xu , Bicheng Liu
IPC: G01T1/24 , H01L31/0224 , H01L31/032
Abstract: A semiconductor may include a semiconductor detection material including a first side and a second side opposite to each other, a cathode disposed on the first side, and an anode disposed on the second side. The anode includes an array of pixel anodes defining detection pixels of the semiconductor detector, and intermediate anodes disposed between adjacent ones of the pixel anodes. According to an embodiment of the present disclosure, it is possible to achieve signal correction to improve the energy resolution and the signal-to-noise ratio of the detector.
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公开(公告)号：US10262410B2
公开(公告)日：2019-04-16
申请号：US15279664
申请日：2016-09-29
Applicant: NUCTECH COMPANY LIMITED
Inventor： Zhiqiang Chen , Li Zhang , Ziran Zhao , Yaohong Liu , Cun Cheng , Qiang Li , Jianping Gu , Jian Zhang , Gang Fu
IPC: G06T7/00 , G06K9/00 , G06K9/46 , G06Q30/00 , G06K9/32 , G06T7/11 , G06K9/18 , G06K9/62 , G06T7/136
Abstract: 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.
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Patent Agency Ranking
公开(公告)号：US10217204B2
公开(公告)日：2019-02-26
申请号：US15409738
申请日：2017-01-19
Applicant: Nuctech Company Limited
Inventor： Zhiqiang Chen , Yuanjing Li , Li Zhang , Ziran Zhao , Yaohong Liu , Jianping Gu , Zhiming Wang
Abstract: 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.
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公开(公告)号：US10134123B2
公开(公告)日：2018-11-20
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
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：US10122973B2
公开(公告)日：2018-11-06
申请号：US14580488
申请日：2014-12-23
Applicant: Nuctech Company Limited
Inventor： Ziran Zhao , Yaohong Liu , Jianping Gu , Qiang Li , Jian Zhang
Abstract: The present disclosure relates to a fluoroscopic inspection system for automatic classification and recognition of cargoes. The system includes: an image data acquiring unit, configured to perform scanning and imaging for a container by using an X-ray scanning device to acquire a scanned image; an image segmenting unit, configured to segment the scanned image into small regions each having similar gray scales and texture features; a feature extracting unit, configured to extract features of the small regions; a training unit, configured to generate a classifier according to annotated images; and a classification and recognition unit, configured to recognize the small regions by using the classifier according to the extracted features, to obtain a probability of each small region pertaining to a certain category of cargoes, and merge small regions to obtain large regions each representing a category.
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49.发明申请公开(公告)号：US20180189945A1
公开(公告)日：2018-07-05
申请号：US15858868
申请日：2017-12-29
Applicant: Nuctech Company Limited , Tsinghua University
Inventor： Ziran Zhao , Jianping Gu , Bicheng Liu , Qi Wang , Xi Yi
CPC classification number: G06T7/0004 , G01P13/00 , G01T1/00 , G01V5/0058 , G06F3/016 , G06Q50/30 , G06T7/74 , G06T15/08 , G06T2207/10012 , G06T2207/10081 , G06T2207/30232
Abstract: A method, a device and a security system for image data processing based on VR or AR are disclosed. In one aspect, an example image data processing method includes reconstructing, based on three-dimensional (3D) scanned data of a containing apparatus in which objects are contained, a 3D image of the containing apparatus and the objects contained in the containing apparatus. The reconstructed 3D image is stereoscopically displayed. Manipulation information is determined for at least one of the objects in the containing apparatus based on positioning information and action information of a user. At least a 3D image of the at least one object is reconstructed based on the determined manipulation information. The at least one reconstructed object is presented on the displayed 3D image.
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公开(公告)号：US10013615B2
公开(公告)日：2018-07-03
申请号：US15034021
申请日：2014-11-07
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.
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