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11.发明授权公开(公告)号：US10681380B2
公开(公告)日：2020-06-09
申请号：US15735427
申请日：2016-03-18
Inventor： Kengo Terada , Takahiro Nishi , Tadamasa Toma , Satoshi Yoshikawa
IPC: H04N19/61 , H04N19/80 , H04N19/109 , H04N19/82 , H04N19/70 , G06T9/00 , H04N19/593 , H04N19/156 , H04N19/17 , H04N19/117 , H04N19/11 , H04N19/51 , H04N19/147 , H04N19/85
Abstract: The image encoding method includes: encoding an image including a block by performing, in at least one of intra prediction, inter prediction, and an in-loop filter, a non-linear process by which the input-output relationship becomes non-linear; and encoding an operation parameter of a non-linear filter to be used in the non-linear process.
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12.发明授权公开(公告)号：US10171794B2
公开(公告)日：2019-01-01
申请号：US15075220
申请日：2016-03-21
Inventor： Toru Matsunobu , Toshiyasu Sugio , Tatsuya Koyama , Satoshi Yoshikawa
IPC: H04N13/02 , H04N13/04 , H04N13/243 , H04N13/296
Abstract: In a method, M (M is a natural number smaller than N) cameras capturing images to be displayed are selected from N (N is a natural number equal to or larger than 2) cameras capturing images of a same scene. The method includes obtaining positions and image capture angles of the N cameras and selecting M cameras from the N cameras on the basis of the obtained positions and image capture angles of the N cameras.
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公开(公告)号：US20240155224A1
公开(公告)日：2024-05-09
申请号：US18413807
申请日：2024-01-16
Inventor： Satoshi Yoshikawa , Toshiyasu Sugio , Toru Matsunobu , Masaki Fukuda , Kensho Teranishi
IPC: H04N23/60 , G06F3/04842 , G06T7/33 , G06T19/20 , H04N23/63
CPC classification number: H04N23/64 , G06F3/04842 , G06T7/344 , G06T19/20 , H04N23/631 , H04N23/633 , G06T2219/2004
Abstract: A displacement detection method, performed by a computer, includes: obtaining (i) a first three-dimensional (3D) model representing a region at a first timing by 3D points and including first objects and (ii) a second three-dimensional model representing the region at a second timing by 3D points and including second objects, the second timing being different from the first timing; detecting, by use of attribute information of the first objects and the second objects, (i) first 3D points included in the first 3D model and (ii) second 3D points included in the second 3D model and associated with the respective first 3D points; performing alignment of the first 3D model and the second 3D model by use of the first 3D points and the second 3D points; and detecting displacement between the first 3D model and the second 3D model after the alignment.
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公开(公告)号：US11956532B2
公开(公告)日：2024-04-09
申请号：US17462630
申请日：2021-08-31
Inventor： Satoshi Yoshikawa , Toshiyasu Sugio , Toru Matsunobu , Masaki Fukuda , Kensho Teranishi
CPC classification number: H04N23/64 , G06F3/04842 , G06T7/344 , G06T19/20 , H04N23/631 , H04N23/633 , G06T2219/2004
Abstract: A displacement detection method, performed by a computer, includes: obtaining (i) a first three-dimensional (3D) model representing a region at a first timing by 3D points and including first objects and (ii) a second three-dimensional model representing the region at a second timing by 3D points and including second objects, the second timing being different from the first timing; detecting, by use of attribute information of the first objects and the second objects, (i) first 3D points included in the first 3D model and (ii) second 3D points included in the second 3D model and associated with the respective first 3D points; performing alignment of the first 3D model and the second 3D model by use of the first 3D points and the second 3D points; and detecting displacement between the first 3D model and the second 3D model after the alignment.
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公开(公告)号：US11176707B2
公开(公告)日：2021-11-16
申请号：US17070290
申请日：2020-10-14
Inventor： Tatsuya Koyama , Masaki Fukuda , Toshiyasu Sugio , Toru Matsunobu , Satoshi Yoshikawa
IPC: G06T7/80 , G06T7/246 , G06T7/73 , H04N13/246
Abstract: A calibration apparatus calibrates parameters of imaging apparatuses which are disposed at different positions and image a common three-dimensional space. The calibration apparatus includes: an obtaining circuit which obtains videos captured by the imaging apparatuses and each including frames; an extraction circuit which extracts feature points from the frames included in the videos, the feature points including first feature points extracted from first frames included in the videos and second feature points extracted from areas containing an image of a moving object in second frames included in the videos and different from the first frames; a matching circuit which performs matching using the feature points, the matching including matching between the first feature points and matching between the second feature points; and a calibration circuit which calculates parameters of the imaging apparatuses based on first matching results obtained through the matching by the matching circuit.
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Patent Agency Ranking
公开(公告)号：US11012693B2
公开(公告)日：2021-05-18
申请号：US15539418
申请日：2015-10-08
Inventor： Satoshi Yoshikawa , Takahiro Nishi , Kengo Terada
IPC: H04N11/02 , H04N19/124 , H04N19/176 , H04N19/126 , H04N19/154 , H04N19/159 , H04N19/46 , H04N19/136
Abstract: An encoding method which allows reduction in the amount of codes is provided. The encoding method includes: setting step S11 for setting a quantization matrix set; quantization step S12 for performing quantization on a target block using the selected quantization matrix; and encoding step S13 for encoding, in a mutually associated manner, the target block which has been subjected to the quantization and identification information for identifying the quantization matrix set which has been set. In setting step S11, a quantization matrix set selected from a plurality of quantization matrix sets is set as the quantization matrix set to be used to perform the quantization on the target block, the plurality of quantization matrix sets including a custom quantization matrix set which is arbitrarily specified and a plurality of defined quantization matrix sets which have been respectively defined in advance.
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17.发明授权公开(公告)号：US12175601B2
公开(公告)日：2024-12-24
申请号：US17943415
申请日：2022-09-13
Inventor： Satoshi Yoshikawa , Toru Matsunobu , Kensho Teranishi , Masaki Fukuda , Ukyou Katsura
Abstract: A shooting method executed by a shooting device includes: shooting first images of a target space; generating a first three-dimensional point cloud of the target space, based on the first images and a first shooting position and a first shooting orientation of each of the first images; and determining a first region of the target space for which generating a second three-dimensional point cloud which is denser than the first three-dimensional point cloud is difficult, using the first three-dimensional point cloud and without generating the second three-dimensional point cloud. The determining includes generating a mesh using the first three-dimensional point cloud, and determining the region other than a second region of the target space for which the mesh is generated.
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公开(公告)号：US11869146B2
公开(公告)日：2024-01-09
申请号：US17748331
申请日：2022-05-19
Inventor： Kensho Teranishi , Satoshi Yoshikawa , Toru Matsunobu , Masaki Fukuda
CPC classification number: G06T17/05 , G06T7/55 , G06T7/80 , G06T2200/04 , G06T2200/08
Abstract: A three-dimensional model generation method includes: obtaining map information generated by camera calibration executed by controlling one or more cameras to shoot a subject from a plurality of viewpoints, the map information including three-dimensional points each indicating a position on the subject in a three-dimensional space; obtaining a first image from a first view point and a second image from a second viewpoint; determining a search range in the three-dimensional space, based on the map information, the search range including a first three-dimensional point on the subject, the first three-dimensional point corresponding to a first point in the first image; searching for a similar point that is similar to the first point, in a range in the second image which corresponds to the search range; and generating a three-dimensional model using a search result in the searching.
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公开(公告)号：US11223821B2
公开(公告)日：2022-01-11
申请号：US16053102
申请日：2018-08-02
Inventor： Satoshi Yoshikawa , Toshiyasu Sugio , Toru Matsunobu , Tatsuya Koyama
IPC: H04N13/354 , H04N21/218 , H04N21/438 , H04N21/2668 , H04N21/214 , G08B13/196 , H04N21/2187 , H04N21/6587 , H04N7/18 , G06T7/292 , H04N13/117 , H04N13/398
Abstract: A video display method includes: selecting, as a first selected viewpoint, one first viewpoint from among a plurality of first viewpoints corresponding to a plurality of second videos, and displaying a second video corresponding to the first selected viewpoint; determining whether the first selected viewpoint is included in a plurality of second viewpoints corresponding to a plurality of fourth videos captured after the plurality of second videos; and selecting one second viewpoint from among the plurality of second viewpoints as a second selected viewpoint and displaying a fourth video that is included in the plurality of fourth videos and corresponds to the second selected viewpoint, when the first selected viewpoint is determined to not be included in the plurality of second viewpoints.
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公开(公告)号：US12002152B2
公开(公告)日：2024-06-04
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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