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公开(公告)号：US10349910B2
公开(公告)日：2019-07-16
申请号：US15563547
申请日：2016-03-30
发明人： Liang Zhong , Ru San Tan , Weimin Huang , Jiayin Zhou , Yuping Duan , Wei Xiong , Yanling Chi , Kyaw Kyar Toe
IPC分类号： A61B6/00 , A61B6/03 , G06T7/00 , A61B5/02 , A61B5/055 , A61B5/107 , A61B5/00 , G06T7/12 , G06T7/62 , A61B8/12
摘要： A method for assessing blood vessel stenosis using image data of a subject is disclosed. The image data represents a vascular structure of the subject. The method comprises: (a) segmenting, from the image data, a vessel segment representing a segment of a blood vessel, (b) obtaining, using the image data, a plurality of two-dimensional images of the vessel segment; said plurality of two-dimensional images representing respective cross-sections of the vessel segment, (c) identifying, for each of the plurality of two-dimensional images, a lumen area comprising lumen pixels representing a lumen of the corresponding cross-section, (d) obtaining a quantitative measure using the lumen areas of successive cross-sections of the vessel segment, and (e) assessing blood vessel stenosis using the quantitative measure. A computer system for performing the above method is disclosed.
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公开(公告)号：US11670078B2
公开(公告)日：2023-06-06
申请号：US17598800
申请日：2020-03-27
发明人： Wei Xiong , Wenyu Chen , Jierong Cheng , Jia Du
CPC分类号： G06V20/00 , G06F18/295 , G06T7/277 , G06V10/32 , G06V10/457 , G06T2207/10016
摘要： This disclosure relates to method and system for visual inspection of rotating components. The method includes representing rotation cycles of a rotating component as spatial features based on video or image frames, ascertaining and/or evolving Hidden Markov Model (HMM) chains for the cycles, ascertaining a count of the rotating component in the frames and/or labelling the frames with ascertained states of the HMM chains.
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公开(公告)号：US10823681B2
公开(公告)日：2020-11-03
申请号：US16090170
申请日：2017-03-30
发明人： Wenyu Chen , Wei Xiong , Jia Du , Jierong Cheng , Teck Sun Marcus Wan
摘要： A system and a method for imaging a surface defect on an object are provided. The system includes an actuator, a sensor assembly connected to the actuator, and a processor configured to control the actuator and the sensor assembly. The sensor assembly includes at least one sensor configured to capture at least one image of the object. The processor is configured to control the actuator and the sensor assembly to identify the actuator and the sensor assembly, a region of a region of interest associated with the surface defect using an using an image of the object and to repeatedly identify at least one subsequent region of interest associated with the surface defect using at least a preceding region of interest such that the surface defect is identified according to a predetermined criterion.
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公开(公告)号：US10687896B2
公开(公告)日：2020-06-23
申请号：US14898059
申请日：2014-06-11
发明人： Wenyu Chen , Sudhakar K. Venkatesh , Qi Tian , Jianyin Zhou , Weimin Huang , Wei Xiong , Oo Thiha
摘要： A method for surgical resection planning of a mass includes the steps of, modelling the mass based on a plurality of physical dimensions, determining a plurality of safety margins around a plurality of features within the mass, simulating a resection surface on the mass that includes a plurality of triangles, optimizing local area and position of a first of the plurality of triangles on the resection surface based on a triangle-based algorithm, updating the simulation of the resection surface, and repeating the steps of optimizing and updating for each of the plurality of triangles on the resection surface.
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