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公开(公告)号：US12209934B2
公开(公告)日：2025-01-28
申请号：US17568129
申请日：2022-01-04
Inventor： Taro Imagawa , Akihiro Noda , Yuki Maruyama , Hiroya Kusaka
Abstract: An imaging parameter output method is a method of outputting an imaging parameter of an imaging device that captures an image for measuring a displacement representing a movement of an object. The imaging parameter output method includes: obtaining object information identifying the object, and a geometric imaging condition for imaging the object; calculating the imaging parameter including a candidate imaging area for placing the imaging device and the accuracy in measuring the displacement in the candidate imaging area, based on the object information and the geometric imaging condition, without imaging the object using the imaging device; and outputting the imaging parameter.
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公开(公告)号：US11976960B2
公开(公告)日：2024-05-07
申请号：US17015675
申请日：2020-09-09
Inventor： Taro Imagawa , Akihiro Noda , Hiroya Kusaka
CPC classification number: G01G19/022 , B60W40/06 , B60W40/13 , G01B11/24 , G01G9/00 , G06T7/70 , B60W2420/403 , B60W2530/00 , G06T2207/30252
Abstract: An axle load measuring apparatus includes a displacement calculator, a storage, and an axle load calculator. The displacement calculator detects displacements of positions on a road caused by an axle load using a captured image of the road and a vehicle thereon. When a certain amount of load is applied to a predetermined position of the road, the storage stores a displacement function representing shape information of a spatial distribution of a displacement of the road originated from the predetermined position. The axle load calculator calculates the axle load based on the displacements of the positions and the displacement function.
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公开(公告)号：US11796481B2
公开(公告)日：2023-10-24
申请号：US16996393
申请日：2020-08-18
Inventor： Taro Imagawa , Hiroya Kusaka , Akihiro Noda
CPC classification number: G01N21/8806 , G01B11/30 , G01N21/8851
Abstract: An inspection device that inspects a structure with a crack, including: an obtainer that obtains images of the structure captured at mutually different times while the structure is subjected to varying loads; a crack detector that detects a crack on a surface of the structure in each image; a motion estimator that divides each image into blocks having a predetermined size, and derives motion vectors of the blocks based on a positional relation between a position of each block relative to a reference in a first image and a position of each block relative to the reference in a second image, the reference being a tip of the crack detected, the first and second images being included in the images; and an inspector that determines safety of the structure based on a difference between ones of the motion vectors of symmetric positions with respect to the crack.
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公开(公告)号：US11461875B2
公开(公告)日：2022-10-04
申请号：US17132163
申请日：2020-12-23
Inventor： Akihiro Noda , Taro Imagawa , Yuki Maruyama , Hiroya Kusaka
Abstract: A displacement measurement device includes: an obtainer that obtains a first image which contains a subject and a second image which contains the subject; a generator that generates M template images which contain the subject and which have noise from the first image and generates M target images which contain the subject and which have noise from the second image, M being an integer of 2 or higher; a hypothetical displacement calculator that calculates M hypothetical displacements of the subject from the M template images and the M target images; and a displacement calculator that calculates a displacement of the subject by performing statistical processing on the M hypothetical displacements.
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公开(公告)号：US10982951B2
公开(公告)日：2021-04-20
申请号：US16384987
申请日：2019-04-16
Inventor： Akihiro Noda , Hiroya Kusaka , Taro Imagawa
Abstract: An axle-load measuring apparatus measures an axle load of a vehicle by using a captured image where a road and the vehicle on the road are imaged, and the axle-load measuring apparatus includes a displacement calculator, a correction information obtaining unit, and an axle-load calculator. The displacement calculator detects a displacement of the road by using the captured image. The displacement is caused by receiving the axle load. The correction information obtaining unit obtains correction information. An axle-load calculator calculates the axle load by using the displacement and the correction information.
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Patent Agency Ranking
公开(公告)号：US10697821B2
公开(公告)日：2020-06-30
申请号：US15886891
申请日：2018-02-02
Inventor： Taro Imagawa , Akihiro Noda , Hiroya Kusaka
Abstract: A calibration device is a calibration device configured to calibrate a load meter that measures an axle load of a vehicle. The calibration device includes a detector and a calibrator. The detector detects a displacement amount corresponding to displacement caused on a road by the axle load of the vehicle. The calibrator aggregates the displacement amounts detected by the detector to generate a histogram of the displacement amounts, and updates a displacement coefficient for calculating the axle load of the vehicle based on a shape of the histogram. The calibrator updates the displacement coefficient base only on the shape of the histogram corresponding to a first axle serving as a forefront axle of the vehicle.
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公开(公告)号：US11972554B2
公开(公告)日：2024-04-30
申请号：US17132878
申请日：2020-12-23
Inventor： Taro Imagawa , Akihiro Noda , Yuki Maruyama , Hiroya Kusaka
CPC classification number: G06T7/001 , G01M99/00 , G06T7/246 , G06T7/0004 , G06T2207/10016 , G06T2207/30108 , G06T2207/30184
Abstract: A detection device includes an acquirer that acquires a video of each of a plurality of bearings of a structure including the plurality of bearings, an extractor that extracts a dynamic feature corresponding to a plurality of degrees of freedom of each of the plurality of bearings based on the video, and an identifier that identifies, among the plurality of bearings, a bearing whose dynamic feature fails to match a dynamic feature of one or more other bearings of the plurality of bearings.
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公开(公告)号：US11536602B2
公开(公告)日：2022-12-27
申请号：US16372499
申请日：2019-04-02
Inventor： Taro Imagawa , Akihiro Noda , Hiroya Kusaka
Abstract: A load meter includes a detector, a storage unit, and a load calculator. The detector detects, by using a captured image obtained by capturing a road and a vehicle present on the road, a displacement amount in the captured image, the displacement amount corresponding to displacement caused on the road by application of a load of the vehicle. The storage unit stores information indicating a relation between the load and the displacement amount. The load calculator calculates the load based on the displacement amount and the information.
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公开(公告)号：US11009436B2
公开(公告)日：2021-05-18
申请号：US16597362
申请日：2019-10-09
Inventor： Taro Imagawa , Akihiro Noda , Hiroya Kusaka
IPC: G01N3/00 , G01N3/20 , G01M11/08 , G01N3/28 , G01N3/06 , G01B7/16 , G01B5/04 , G01B11/16 , G01M5/00
Abstract: A rigidity measurement apparatus is a rigidity measurement apparatus that measures rigidity of an object to be measured and includes a load estimator, a displacement calculator, and a rigidity calculator. The load estimator estimates a load applied to a measurement point set on the object to be measured by using a captured image of the object to be measured. The displacement calculator calculates a displacement of the measurement point by using the captured image. The rigidity calculator calculates the rigidity of the object to be measured by using the load and the displacement.
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10.发明授权公开(公告)号：US11913889B2
公开(公告)日：2024-02-27
申请号：US17136681
申请日：2020-12-29
Inventor： Yuki Maruyama , Hiroya Kusaka , Taro Imagawa , Akihiro Noda
CPC classification number: G01N21/8851 , G01B11/16 , G06T7/001 , G06T7/0004 , G01M5/0033 , G01N2021/8861 , G01N2021/8867 , G01N2203/0066
Abstract: A prediction device for predicting the growth direction of a crack that occurs in a subject includes: an obtainer that obtains video of the subject; a derivation unit that derives displacement of each of a plurality of regions in the obtained video; a selector that selects, from among the plurality of regions, two or more regions each having displacement similar to displacement of a reference region included in the plurality of regions; and an identification unit that identifies, as the growth direction, the longitudinal direction of a collective region made up of the two or more selected regions.
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