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公开(公告)号：US20210335010A1
公开(公告)日：2021-10-28
申请号：US17370402
申请日：2021-07-08
Inventor： Masaki FUKUDA , Toshiyasu SUGIO , Toru MATSUNOBU , Satoshi YOSHIKAWA , Tatsuya KOYAMA
Abstract: A calibration method of calibrating, using a processor, parameters of a plurality of imaging apparatuses that capture a common three-dimensional space, includes: obtaining images captured by the plurality of imaging apparatuses; obtaining the parameters of the plurality of imaging apparatuses; for each of the images, generating at least one search window to extract a plurality of feature points of the image using the parameters; for each of the images, extracting the plurality of feature points from an inside of the at least one search window; performing feature point matching between the images using the plurality of feature points; and calibrating the parameters based on a plurality of matching results obtained.
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12.发明申请公开(公告)号：US20210027529A1
公开(公告)日：2021-01-28
申请号：US17066935
申请日：2020-10-09
Inventor： Toru MATSUNOBU , Toshiyasu SUGIO , Satoshi YOSHIKAWA , Tatsuya KOYAMA , Masaki FUKUDA
Abstract: A three-dimensional model processing method includes: generating, from first images shot by respective cameras at a first time, a first three-dimensional model including: first three-dimensional points indicating a subject at the first time; and first camera parameters indicating positions and orientations of the cameras; generating, from second images shot by the respective cameras at a second time, a second three-dimensional model including: second three-dimensional points indicating the subject at the second time; and second camera parameters indicating positions and orientations of the cameras; detecting a stationary camera among the cameras, whose position and orientation has not changed between the first and second times, or stationary three-dimensional points among the three-dimensional points, whose positions have not changed between the first and second times; and matching world coordinate systems of the first and second three-dimensional models, based on the first camera parameters of the stationary camera or the stationary three-dimensional points detected.
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公开(公告)号：US20250046039A1
公开(公告)日：2025-02-06
申请号：US18593166
申请日：2024-03-01
Inventor： Masaki FUKUDA , Toru MATSUNOBU
Abstract: A dimension measurement device includes a processor and memory. The processor, using the memory, obtains a three-dimensional model of a target object, selects a basic shape from a plurality of basic shapes, each of the plurality of basic shapes being a corresponding candidate of a three-dimensional shape, fits the selected basic shape to the three-dimensional model, and measures a dimension of the target object using the basic shape that has been fitted.
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14.发明公开公开(公告)号：US20230394754A1
公开(公告)日：2023-12-07
申请号：US18203925
申请日：2023-05-31
Inventor： Toru MATSUNOBU , Satoshi YOSHIKAWA , Kensho TERANISHI , Masaki FUKUDA , Ukyou KATSURA
CPC classification number: G06T17/00 , G06T7/13 , G06T2207/10012
Abstract: A three-dimensional model generation method executed by a computer includes: obtaining a first image generated by shooting a subject from a first viewpoint and a second image generated by shooting the subject from a second viewpoint; detecting, in at least the first image, a first line composed of a series of edges and corresponding to a contour of the subject; and generating first three-dimensional points representing the contour, in a three-dimensional space in the computer, based on the first image, the second image, and the first line.
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Patent Agency Ranking
公开(公告)号：US20230005216A1
公开(公告)日：2023-01-05
申请号：US17943479
申请日：2022-09-13
Inventor： Kensho TERANISHI , Satoshi YOSHIKAWA , Toru MATSUNOBU , Masaki FUKUDA
Abstract: A three-dimensional model generation method executed by an information processing device includes: obtaining images generated by shooting a subject from respective viewpoints; searching for a similar point that is similar to a first point in a first image among the images, from second points in a search area in a second image different from the first image, the search area being provided based on the first point; calculating an accuracy of a search result of the searching, using degrees of similarity between the first point and the respective second points; and generating a three-dimensional model using the search result and the accuracy.
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公开(公告)号：US20220277516A1
公开(公告)日：2022-09-01
申请号：US17746190
申请日：2022-05-17
Inventor： Toru MATSUNOBU , Satoshi YOSHIKAWA , Masaki FUKUDA , Kensho TERANISHI , Pradit MITTRAPIYANURUK , Keng Liang LOI , Pongsak LASANG
IPC: G06T17/00 , G06T19/00 , G06T3/40 , G06T7/90 , G06T7/70 , G01S17/89 , G01B11/26 , G01S7/4865 , G01S17/86
Abstract: A three-dimensional model generation method executed by an information processing device includes: obtaining a first three-dimensional model from a measuring device that emits an electromagnetic wave and obtains a reflected wave which is the electromagnetic wave reflected by a measurement target to thereby generate a first three-dimensional model including first position information indicating first three-dimensional positions in the measurement target; obtaining a multi-viewpoint image generated by one or more cameras shooting the measurement target from different positions; and generating a second three-dimensional model by enhancing the definition of the first three-dimensional model using the multi-viewpoint image.
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17.发明申请公开(公告)号：US20220138971A1
公开(公告)日：2022-05-05
申请号：US17577733
申请日：2022-01-18
Inventor： Toru MATSUNOBU , Toshiyasu SUGIO , Satoshi YOSHIKAWA , Masaki FUKUDA , Kensho TERANISHI
Abstract: A three-dimensional displacement measuring method includes: calculating camera parameters of N cameras based on M correction images shot at M viewpoints by cameras including the N cameras, where N is an integer greater than 1 and M is an integer greater than N, the M viewpoints being mutually different; and measuring a displacement over time of a subject caused by vibration of the subject in a three-dimensional space, based on (1) sets of N images and (2) the camera parameters. The N images in each of the sets are generated by the N cameras shooting the subject at the same time, and the sets are generated at different times. The different times are set according to a frequency of the vibration of the subject.
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公开(公告)号：US20220114785A1
公开(公告)日：2022-04-14
申请号：US17560584
申请日：2021-12-23
Inventor： Kensho TERANISHI , Toru MATSUNOBU , Toshiyasu SUGIO , Satoshi YOSHIKAWA , Masaki FUKUDA
Abstract: A three-dimensional model generation method includes: generating a first three-dimensional model of a predetermined region from first frames; projecting the first three-dimensional model onto at least one second frame; and generating a second three-dimensional model in accordance with first pixels in the at least one second frame onto which the first three-dimensional model is not projected.
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公开(公告)号：US20210390717A1
公开(公告)日：2021-12-16
申请号：US17459219
申请日：2021-08-27
Inventor： Masaki FUKUDA , Toshiyasu SUGIO , Toru MATSUNOBU , Satoshi YOSHIKAWA , Kensho TERANISHI
Abstract: An object amount calculation apparatus includes: a receiver configured to obtain a first three-dimensional model and a second three-dimensional model different from the first three-dimensional model, each of the first three-dimensional model and the second three-dimensional model representing a same space, each of the first three-dimensional model and the second three-dimensional model being constituted with regions having respective attributes; and a processor configured to: align the first three-dimensional model and the second three-dimensional model based on at least one attribute of the first three-dimensional model and the second three-dimensional model; calculate, for each of the attributes, a difference between the first three-dimensional model aligned and the second three-dimensional model aligned; and output (i) a total amount of differences corresponding to two or more attributes among the attributes and (ii) information on the two or more attributes.
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