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公开(公告)号：US12155855B2
公开(公告)日：2024-11-26
申请号：US17558755
申请日：2021-12-22
Inventor： Satoshi Yoshikawa , Hisao Sasai , Kengo Terada
IPC: H04N11/02 , H04N19/50 , H04N19/176 , H04N19/182 , H04N19/46
Abstract: A decoder includes a memory and a processor coupled to the memory. The processor is configured to obtain first information from a bitstream, the first information indicating a number of first points in a current picture. The processor is also configured to determine second information provided for each of the first points based on the first information, the second information indicating a difference between a coordinate value of a first point and a coordinate value of a corresponding second point, the corresponding second point being included in a reference picture. The processor is further configured to generate a prediction image of a current block by performing an affine prediction according to the determined second information.
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公开(公告)号：US10944955B2
公开(公告)日：2021-03-09
申请号：US16284339
申请日：2019-02-25
Inventor： Tatsuya Koyama , Toshiyasu Sugio , Toru Matsunobu , Satoshi Yoshikawa
IPC: H04N13/246 , H04N5/222 , H04N5/232 , H04N7/18 , H04N21/218 , G06T7/80 , G06T7/70 , H04N13/296 , H04N13/243 , H04N13/111 , G06K9/00 , G06T7/20
Abstract: A multiple viewpoint image capturing system includes: a plurality of cameras that capture videos in a predetermined space from different positions; a circumstance sensing unit that senses at least one of circumstances of the respective cameras and circumstances of the predetermined space, and outputs the sensed circumstances in a form of capturing circumstance information; and an event detector that detects a predetermined event based on the capturing circumstance information, determines whether to perform camera calibration in a case of detecting the predetermined event, and outputs camera calibration information that indicates the camera calibration to be performed in a case of determining that the camera calibration is to be performed.
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公开(公告)号：US10893251B2
公开(公告)日：2021-01-12
申请号：US16295582
申请日：2019-03-07
Inventor： Tatsuya Koyama , Toshiyasu Sugio , Toru Matsunobu , Satoshi Yoshikawa , Pongsak Lasang , Chi Wang
IPC: H04N13/139 , H04N13/282 , G06T7/80 , G06T7/70 , G06T7/55
Abstract: A three-dimensional model generating device includes: a converted image generating unit that, for each of input images included in one or more items of video data and having mutually different viewpoints, generates a converted image from the input image that includes fewer pixels than the input image; a camera parameter estimating unit that detects features in the converted images and estimates, for each of the input images, a camera parameter at a capture time of the input image, based on a pair of similar features between two of the converted images; and a three-dimensional model generating unit that generates a three-dimensional model using the input images and the camera parameters.
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公开(公告)号：US12249027B2
公开(公告)日：2025-03-11
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 , G01B11/26 , G01S7/48 , G01S7/4865 , G01S17/86 , G01S17/89 , G06T3/40 , G06T3/4007 , G06T7/70 , G06T7/90 , G06T19/00
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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公开(公告)号：US12190534B2
公开(公告)日：2025-01-07
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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Patent Agency Ranking
6.发明公开公开(公告)号：US20240296621A1
公开(公告)日：2024-09-05
申请号：US18663702
申请日：2024-05-14
Inventor： Kensho TERANISHI , Toru Matsunobu , Satoshi Yoshikawa , Georges Nader , Zheng Wu , Pongsak Lasang
CPC classification number: G06T17/00 , G06T7/80 , G06T2207/10012 , G06T2207/10028 , G06T2207/30244 , G06T2210/21
Abstract: A three-dimensional model generation method includes: obtaining subject information including a plurality of positions on a subject in a three-dimensional space; obtaining a first camera image of the subject from a first viewpoint and a second camera image of the subject from a second viewpoint; determining a search range in the three-dimensional space, including a first three-dimensional point on the subject corresponding to a first point in the first camera image, based on the subject information and without using map information that is generated by camera calibration executed by shooting the subject from a plurality of viewpoints and includes three-dimensional points each indicating a position on the subject in the three-dimensional space; searching for a similar point that is similar to the first point, in a range in the second camera image corresponding to the search range; and a generating three-dimensional model using the search result.
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公开(公告)号：US11240522B2
公开(公告)日：2022-02-01
申请号：US16700377
申请日：2019-12-02
Inventor： Satoshi Yoshikawa , Hisao Sasai , Kengo Terada
IPC: H04N11/02 , H04N19/50 , H04N19/176 , H04N19/182 , H04N19/46
Abstract: An image decoding device is provided for decoding a current block using a coded bitstream. The image decoding device includes a processor and a memory coupled to the processor. The processor of the image coding device performs operations, including obtaining a first data to determine a number of first points in a first picture to predict the current block, the first picture including the current block. The processor also performs selecting motion information for each of the first points, the motion information being one of candidates where the number of selected motion information being equal to the number of the first points determined by the first data. The processor further performs generating a prediction image to decode the current block based on the selected motion information.
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8.发明授权公开(公告)号：US11210846B2
公开(公告)日：2021-12-28
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：US11043008B2
公开(公告)日：2021-06-22
申请号：US16580185
申请日：2019-09-24
Inventor： Tatsuya Koyama , Toshiyasu Sugio , Yoichi Sugino , Toru Matsunobu , Satoshi Yoshikawa
IPC: H04N13/246 , G06T7/80 , G06T7/73 , H04N13/243 , B64C39/02 , B64D47/08 , G05D1/00
Abstract: A calibrator for cameras includes a controlling circuit, a photographing circuit, a calculating circuit, and an instructing circuit. The controlling circuit is configured to control a movable body in a shooting area of the cameras. A marker is provided on the movable body for calibration of the cameras. The photographing circuit is configured to control the cameras to photograph the marker at a first position at a first timing to generate first images. The photographing circuit is configured to control the cameras to photograph the marker at a second position at a second timing to generate second images. The calculating circuit is configured to calculate parameters of the cameras based on the first images and the second images. The instructing circuit is configured to transmit the parameters to the cameras to calibrate the cameras.
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公开(公告)号：US10789765B2
公开(公告)日：2020-09-29
申请号：US16163010
申请日：2018-10-17
Inventor： Toru Matsunobu , Toshiyasu Sugio , Satoshi Yoshikawa , Tatsuya Koyama , Pongsak Lasang , Jian Gao
Abstract: Provided is a three-dimensional reconstruction method of reconstructing a three-dimensional model from multi-view images. The method includes: selecting two frames from the multi-view images; calculating image information of each of the two frames; selecting a method of calculating corresponding keypoints in the two frames, according to the image information; and calculating the corresponding keypoints using the method of calculating corresponding keypoints selected in the selecting of the method of calculating corresponding keypoints.
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