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公开(公告)号：US20220205776A1
公开(公告)日：2022-06-30
申请号：US17699418
申请日：2022-03-21
Inventor： Akihiro NODA , Taro IMAGAWA , Yuki MARUYAMA , Hiroya KUSAKA
Abstract: A conversion parameter calculation method includes: obtaining, from an image capturing device, image data obtained by the image capturing device capturing an image of an object having attached thereto a marker with which specific coordinates are detectable; obtaining displacement direction information indicating a direction of a displacement of the object, the direction crossing an image capturing surface of the image capturing device; detecting specific coordinates, based on the marker included in the image data; estimating a position of the image capturing device, based on a result of the detection; calculating distance data indicating a distance from the image capturing device to the object, based on the position of the image capturing device; and calculating, using the distance data and the displacement direction information, a conversion parameter for converting a pixel displacement amount of the object into an actual displacement amount.
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公开(公告)号：US20210099718A1
公开(公告)日：2021-04-01
申请号：US17120900
申请日：2020-12-14
Inventor： Yuki MARUYAMA , Hiroya KUSAKA , Taro IMAGAWA , Akihiro NODA
IPC: H04N19/167 , H04N19/543 , H04N19/176
Abstract: An encoding device that compression-encodes a plurality of images to measure local displacement of the structure includes: a determiner that determines, as a first region in the plurality of images to be used to measure local displacement of the structure; and an encoder that encodes the first region using a first parameter and encodes a second region different from the first region using a second parameter. The first parameter is a coding parameter yielding less loss of image information due to lossy compression than the second parameter.
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公开(公告)号：US20220215582A1
公开(公告)日：2022-07-07
申请号：US17704290
申请日：2022-03-25
Inventor： Taro IMAGAWA , Akihiro NODA , Yuki MARUYAMA , Hiroya KUSAKA
Abstract: A conversion parameter calculation method includes: obtaining, from a first image capturing device, first image data obtained by the first image capturing device capturing an image of an object; obtaining, from a second image capturing device, second distance data indicating a distance to the object, and second image data obtained by the second image capturing device capturing an image of the object; obtaining displacement direction information indicating a direction of a displacement of the object in three dimensions; associating positions on the object in the first image data and the second image data; estimating a position of the first image capturing device; calculating first distance data indicating a distance from the first image capturing device to the object; and calculating a conversion parameter for converting a pixel displacement amount of the object into the actual displacement amount, using the first distance data and the displacement direction information.
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公开(公告)号：US20190124254A1
公开(公告)日：2019-04-25
申请号：US16223982
申请日：2018-12-18
Inventor： Youji SHIBAHARA , Toshiyasu SUGIO , Toru MATSUNOBU , Yuki MARUYAMA
IPC: H04N5/232 , H04N21/43 , H04N5/04 , H04N21/242
CPC classification number: H04N5/23206 , H04N5/04 , H04N21/242 , H04N21/4305
Abstract: A photographing method in which a terminal device performs photographing is provided. The photographing method includes synchronizing a clock of the terminal device with a reference clock, and acquiring photographing clock time information indicating a photographing clock time which is based on the reference clock through a communication network. The photographing method also includes specifying a photographing delay time until the photographing is performed since photographing start in the terminal device, and photographing a subject at the photographing clock time indicated by the photographing clock time information. The photographing clock time being based on the clock of the terminal device already synchronized with the reference clock.
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公开(公告)号：US20220375066A1
公开(公告)日：2022-11-24
申请号：US17881836
申请日：2022-08-05
Inventor： Yuki MARUYAMA , Taro IMAGAWA , Hiroya KUSAKA , Akihiro NODA
Abstract: A measurement method, which is performed by a measurement device that measures a displacement of a target object, includes: receiving designation of a designation point on a first image that includes the target object; setting a plurality of set points, based on the designation point; identifying a direction of a line that connects two of the plurality of set points; generating a second image by rotating the first image, the second image being an image in which the identified direction of the line is horizontal or vertical; setting, in the second image, a measurement region that partially includes the line; and measuring the displacement of the target object in the measurement region, the displacement being a displacement in a direction orthogonal to the line.
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Patent Agency Ranking
公开(公告)号：US20210304417A1
公开(公告)日：2021-09-30
申请号：US17346582
申请日：2021-06-14
Inventor： Hiroya KUSAKA , Akihiro NODA , Yuki MARUYAMA , Taro IMAGAWA
Abstract: An observation method includes: displaying video of a subject; receiving designation of at least one point in the video; determining an area or edge in the video based on the point; setting, in the video, observation point candidates in the area or on the edge; evaluating an image of each observation block candidate having a center point that is a corresponding observation point candidate, eliminating any observation point candidates not satisfying conditions, and setting remaining observation point candidates to a plurality of observation points; and observing a movement of the subject itself applied with an certain external load at each observation point. The conditions are that (i) the subject is in a corresponding observation block candidate, (ii) image quality of the observation block candidate is good without temporal deformation or blur, (iii) a displacement of the observation block candidate is not greater than that of any other observation block candidates.
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公开(公告)号：US20210118116A1
公开(公告)日：2021-04-22
申请号：US17132878
申请日：2020-12-23
Inventor： Taro IMAGAWA , Akihiro NODA , Yuki MARUYAMA , Hiroya KUSAKA
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：US20210104033A1
公开(公告)日：2021-04-08
申请号：US17126883
申请日：2020-12-18
Inventor： Taro IMAGAWA , Akihiro NODA , Yuki MARUYAMA , Hiroya KUSAKA
Abstract: An inspection device inspects fastening members that fasten a structure. The inspection device includes an obtainer that obtains images including a first image and a second image of the fastening members at times different from each other; a detector that detects first displacements that are respective displacements of the fastening members based on the first image and the second image; and an identifier that identifies, out of the fastening members based on the first displacements, a target fastening member behaving differently from other fastening members.
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公开(公告)号：US20210104031A1
公开(公告)日：2021-04-08
申请号：US17123410
申请日：2020-12-16
Inventor： Taro IMAGAWA , Akihiro NODA , Yuki MARUYAMA , Hiroya KUSAKA
Abstract: An information presentation method according to the present disclosure includes: acquiring two or more monochrome images obtained by image-capturing a structure using a monochrome camera and one or more first color images obtained by image-capturing the structure using a color camera, the one or more first color images having a less amount of information than an amount of information of the two or more monochrome images; detecting a displacement that indicates a movement of the structure based on the two or more monochrome images; generating presentation information that includes one or more second color images that present information that indicates the displacement based on the two or more monochrome images and the one or more first color images; and outputting the presentation information.
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公开(公告)号：US20210116388A1
公开(公告)日：2021-04-22
申请号：US17136681
申请日：2020-12-29
Inventor： Yuki MARUYAMA , Hiroya KUSAKA , Taro IMAGAWA , Akihiro NODA
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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