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41.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
发明人： Zhiqiang Chen , Yuanjing Li , Li Zhang , Ziran Zhao , Jianping Gu , Shuo Wang
摘要： 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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42.发明授权公开(公告)号：US10007020B2
公开(公告)日：2018-06-26
申请号：US14970679
申请日：2015-12-16
发明人： Jianmin Li , Ying Li , Yulan Li , Jianping Gu , Yuanjing Li , Zhiqiang Chen
CPC分类号： G01V5/0016 , G01N23/04 , G01N2223/639 , G01V5/0008 , G06K9/00624 , G06K9/52 , G06K9/6215 , G06K2209/09 , G06K2209/23 , G06T7/001 , G06T7/60 , G06T7/74 , G06T2207/10116 , G06T2207/30112 , G06T2207/30248 , G06T2207/30268
摘要： A vehicle inspection method is disclosed, comprising steps of: implementing a ray scanning inspection on an inspected vehicle, so as to obtain a ray scanning inspection image of the inspected vehicle; extracting vehicle characteristic information; comparing the vehicle characteristic information of the inspected vehicle to vehicle reference characteristics stored in a database, selecting a closest vehicle reference characteristic which is closest to the vehicle characteristic information, and finding out a closest ray transmission reference image on the basis of a corresponding relationship between the vehicle reference characteristics and ray transmission reference images stored in the storage unit; determining a first distinguishing area of the ray scanning inspection image from the closest ray transmission reference image by comparing the ray scanning inspection image of the inspected vehicle to the closest ray transmission reference image. A vehicle inspection system is also disclosed.
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公开(公告)号：US11346975B2
公开(公告)日：2022-05-31
申请号：US16467140
申请日：2017-08-04
发明人： Zhiqiang Chen , Ziran Zhao , Yaohong Liu , Jianping Gu , Qian Yi , Bicheng Liu , Guangming Xu
IPC分类号： G01V5/00 , G01N23/046 , G01T1/29
摘要： The present disclosure provides a spiral Computed Tomography (CT) device and a three-dimensional image reconstruction method. The spiral CT device includes: an inspection station operable to carry an object to be inspected and defining an inspection space; a rotational supporting apparatus disposed around the inspection space; a plurality of X-ray sources located on the rotational supporting apparatus; and a plurality of X-ray receiving apparatuses located on the rotational supporting apparatus and opposing to the plurality of X-ray sources respectively, wherein the plurality of X-ray sources and the plurality of X-ray receiving apparatuses are rotational synchronously with the rotational supporting apparatus, wherein the plurality of X-ray sources are closely disposed and fan-shaped X-ray beams provided by the plurality of X-ray sources cover the inspection space with a minimum degree of overlapping.
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公开(公告)号：US10646179B2
公开(公告)日：2020-05-12
申请号：US15720502
申请日：2017-09-29
发明人： Guangming Xu , Bicheng Liu , Ziran Zhao , Lan Zhang , Jianping Gu
摘要： The present disclosure provides a method for recognizing an article using a multi-energy spectrum X-ray imaging system and a multi-energy spectrum X-ray imaging system. The method comprises: recognizing an application scenario and/or priori information of the article; selecting a parameter mode suitable for the article from a plurality of parameter modes stored in the multi-energy spectrum X-ray imaging system based on the recognized application scenario and/or priori information; and recognizing the article using the selected parameter mode, wherein the plurality of parameter modes are obtained by optimizing system parameters of the multi-energy spectrum X-ray imaging system under a specific condition using a training sample library for various articles.
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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
发明人： Ziran Zhao , Jianping Gu , Qian Yi , Bicheng Liu
摘要： 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
发明人： Zhiqiang Chen , Yuanjing Li , Ziran Zhao , Yaohong Liu , Jianping Gu , Zhiming Wang
IPC分类号： G06T7/00
摘要： 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
发明人： Lan Zhang , Yingshuai Du , Bo Li , Zonggui Wu , Jun Li , Xuepeng Cao , Haifan Hu , Jianping Gu , Guangming Xu , Bicheng Liu
IPC分类号： G01T1/24 , H01L31/0224 , H01L31/032
摘要： 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
发明人： Zhiqiang Chen , Li Zhang , Ziran Zhao , Yaohong Liu , Cun Cheng , Qiang Li , Jianping Gu , Jian Zhang , Gang Fu
IPC分类号： G06T7/00 , G06K9/00 , G06K9/46 , G06Q30/00 , G06K9/32 , G06T7/11 , G06K9/18 , G06K9/62 , G06T7/136
摘要： 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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公开(公告)号：US10217204B2
公开(公告)日：2019-02-26
申请号：US15409738
申请日：2017-01-19
发明人： Zhiqiang Chen , Yuanjing Li , Li Zhang , Ziran Zhao , Yaohong Liu , Jianping Gu , Zhiming Wang
摘要： 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：US10122973B2
公开(公告)日：2018-11-06
申请号：US14580488
申请日：2014-12-23
发明人： Ziran Zhao , Yaohong Liu , Jianping Gu , Qiang Li , Jian Zhang
摘要： 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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