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公开(公告)号：US11822040B2
公开(公告)日：2023-11-21
申请号：US17255394
申请日：2020-01-06
Inventor： Yanwei Xu , Weifeng Yu , Yu Hu , Chunguang Zong , Shangmin Sun
IPC: G01S17/894 , G01V5/00
CPC classification number: G01V5/0016 , G01S17/894 , G06V2201/08
Abstract: The present disclosure relates to a security scanning inspection system and method. The security scanning inspection system comprises a detector, a scanning device and a controller, wherein the detector is configured to detect a protective attribute of an object to be inspected; the scanning device is movably arranged and the scanning device is configured to emit a scanning ray during movement to perform a security scanning inspection on the object to be inspected, the scanning device comprising at least two working modes, wherein a dose of a scanning ray in each working mode is different from a dose of a scanning ray in any other working modes; and the controller configured to select a working mode of the scanning device according to the protective attribute of the object to be inspected detected by the detector.
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公开(公告)号：US10527525B2
公开(公告)日：2020-01-07
申请号：US16416934
申请日：2019-05-20
Applicant: Nuctech Company Limited
Inventor： Yanwei Xu , Weifeng Yu
IPC: G01M17/007 , G01V5/00 , G01B11/04 , G01N23/04
Abstract: A method and a system for fast inspecting a vehicle based on a length measuring device, including: when a subject vehicle enters an inspection region, measuring a first length and a second length of the subject vehicle; determining whether the first length and the second length is respectively larger than or equal to a preset second length threshold; if so, determining whether a gap portion of the subject vehicle between a first portion and a second portion of the subject vehicle appears in a beam emitting region formed by a beam of radiation rays emitted by the system for fast inspecting a vehicle; and when the gap portion appears in the beam emitting region, emitting a beam of radiation rays of a first radiation dose to the subject vehicle according to the gap portion, wherein the subject vehicle moves with respect to the system for fast inspecting a vehicle.
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13.发明授权公开(公告)号：US10204268B2
公开(公告)日：2019-02-12
申请号：US15280113
申请日：2016-09-29
Applicant: Nuctech Company Limited
Inventor： Yanwei Xu , Weifeng Yu
Abstract: The present disclosure provides a method and system for identifying a train number and train type. The method includes: continuously photographing a train under inspection by using a linear-array camera in motion relative to the train under inspection, and generating a plurality of partial images of the train; splicing the plurality of partial images of the train; correcting distortion of the spliced image; identifying a train number from the corrected image; wherein the correcting distortion of the spliced image includes: extracting a contour of a wheel from the spliced image; obtaining a ratio between a horizontal diameter and a vertical diameter of the wheel from the contour; if the ratio is greater than a first preset threshold, horizontally compressing the spliced image according to the ratio; and if the ratio is smaller than a second preset threshold, horizontally stretching the spliced image.
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公开(公告)号：US10108881B2
公开(公告)日：2018-10-23
申请号：US15278458
申请日：2016-09-28
Applicant: Nuctech Company Limited
Inventor： Yanwei Xu , Weifeng Yu
Abstract: The present disclosure relates to a train type identification method and system, and a security inspection system and system. The train type identification method includes: continuously photographing a to-be-inspected train by using a linearity camera in motion relative to the to-be-inspected train, and generating a plurality of train sub-images; splicing the plurality of train sub-images to acquire a train image of the to-be-inspected train; extracting at least one train characteristic parameter from the train image; comparing the at least one train characteristic parameter with a prestored train type template; and automatically determining a type of the to-be-inspected train based on a comparison result.
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