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公开(公告)号：US10810734B2
公开(公告)日：2020-10-20
申请号：US16457156
申请日：2019-06-28
Applicant: SRI International , Obayashi Corporation
Inventor： Garbis Salgian , Bogdan C. Matei , Matthieu Henri Lecce , Abhinav Rajvanshi , Supun Samarasekera , Rakesh Kumar , Tamaki Horii , Yuichi Ikeda , Hidefumi Takenaka
Abstract: Embodiments of the present invention generally relate to computer aided rebar measurement and inspection systems. In some embodiments, the system may include a data acquisition system configured to obtain fine-level rebar measurements, images or videos of rebar structures, a 3D point cloud model generation system configured to generate a 3D point cloud model representation of the rebar structure from information acquired by the data acquisition system, a rebar detection system configured to detect rebar within the 3D point cloud model generated or the rebar images or videos of the rebar structures, a rebar measurement system to measure features of the rebar and rebar structures detected by the rebar detection system, and a discrepancy detection system configured to compare the measured features of the rebar structures detected by the rebar detection system with a 3D Building Information Model (BIM) of the rebar structures, and determine any discrepancies between them.
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公开(公告)号：US20200005447A1
公开(公告)日：2020-01-02
申请号：US16457156
申请日：2019-06-28
Applicant: SRI International , Obayashi Corporation
Inventor： Garbis Salgian , Bogdan C. Matei , Matthieu Henri Lecce , Abhinav Rajvanshi , Supun Samarasekera , Rakesh Kumar , Tamaki Horii , Yuichi Ikeda , Hidefumi Takenaka
Abstract: Embodiments of the present invention generally relate to computer aided rebar measurement and inspection systems. In some embodiments, the system may include a data acquisition system configured to obtain fine-level rebar measurements, images or videos of rebar structures, a 3D point cloud model generation system configured to generate a 3D point cloud model representation of the rebar structure from information acquired by the data acquisition system, a rebar detection system configured to detect rebar within the 3D point cloud model generated or the rebar images or videos of the rebar structures, a rebar measurement system to measure features of the rebar and rebar structures detected by the rebar detection system, and a discrepancy detection system configured to compare the measured features of the rebar structures detected by the rebar detection system with a 3D Building Information Model (BIM) of the rebar structures, and determine any discrepancies between them.
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公开(公告)号：US11270426B2
公开(公告)日：2022-03-08
申请号：US16412067
申请日：2019-05-14
Applicant: SRI International
Inventor： Garbis Salgian , Bogdan C. Matei , Taragay Oskiper , Mikhail Sizintsev , Rakesh Kumar , Supun Samarasekera
Abstract: Computer aided inspection systems (CAIS) and method for inspection, error analysis and comparison of structures are presented herein. In some embodiments, a CAIS may include a SLAM system configured to determine real-world global localization information of a user in relation to a structure being inspected using information obtained from a first sensor package, a model alignment system configured to: use the determined global localization information to index into a corresponding location in a 3D computer model of the structure being inspected; and align observations and/or information obtained from the first sensor package to the local area of the model 3D computer model of the structure extracted; a second sensor package configured to obtain fine level measurements of the structure; and a model recognition system configured to compare the fine level measurements and information obtained about the structure from the second sensor package to the 3D computer model.
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