公开(公告)号：US20240281992A1

公开(公告)日：2024-08-22

申请号：US18292191

申请日：2021-07-29

申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION

发明人： Kohei MORI ,  Yuki YOKOHATA ,  Aki HAYASHI ,  Takahiro HATA ,  Kazuaki OBANA

IPC分类号： G06T7/60 ,  G01B11/02 ,  G06V20/58

CPC分类号： G06T7/60 ,  G01B11/02 ,  G06V20/58

摘要： In a dimension estimation device, an image acquired in a moving body is acquired, and a vanishing point and a predetermined decision line in the image are calculated. An object in the image is detected and a detection rectangle is detected for the object, the detection rectangle being a rectangle including a first surface that is a surface close to a photographing position, the first surface being in proximity to the decision line, and a second surface that is a surface far from the photographing position. A dimension of the object is estimated on the basis of a ratio between a height of the first surface and a height of the second surface obtainable from a relationship between the detection rectangle and the vanishing point.

公开(公告)号：US20210232831A1

公开(公告)日：2021-07-29

申请号：US15734588

申请日：2019-05-30

申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION

发明人： Atsuhiko MAEDA ,  Manabu YOSHIDA ,  Yuki YOKOHATA ,  Ippei SHAKE

IPC分类号： G06K9/00 ,  G06T11/20 ,  G06T11/60 ,  G06T7/13

摘要： A sidewalk information generation device includes a thinning unit configured to perform thinning processing for extracting, from image data indicating an area of a sidewalk, a centerline in a width direction of the area of the sidewalk, a segmentation unit configured to perform segmentation processing for dividing the centerline extracted by the thinning unit in a longitudinal direction to generate a plurality of lines, and a vectorization unit configured to convert each of the plurality of lines generated by the segmentation unit to vector data indicating a coordinate sequence of a plurality of line segments.

公开(公告)号：US20210312720A1

公开(公告)日：2021-10-07

申请号：US17267613

申请日：2019-08-07

申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION

发明人： Manabu YOSHIDA ,  Yuki YOKOHATA ,  Kouhei MORI ,  Takahiro HATA ,  Atsuhiko MAEDA ,  Ippei SHAKE ,  Satoshi FUKADA

IPC分类号： G07B15/06 ,  G06Q30/02 ,  G06K9/00 ,  G06T7/70

摘要： A lane pricing technique for charging a mobile body traveling on a road for use of a lane is provided. A lane pricing device according to one embodiment is configured to: acquire from a mobile body traveling on a road, at least one of position information of a mobile body measured based on a positioning signal, and/or a camera image that is acquired by capturing an image from the mobile body and includes a part of a lane in which the mobile body is moving; specify, based on at least one of the position information and/or the camera image, a lane in which the mobile body is moving; acquire lane identification information for identifying a specified lane along with time information indicative of time when the mobile body is moving; and determine and output a toll to be charged to the mobile body in units of lanes based on the lane identification information and the time information.

公开(公告)号：US20210223050A1

公开(公告)日：2021-07-22

申请号：US15734712

申请日：2019-05-30

申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION

发明人： Atsuhiko MAEDA ,  Manabu YOSHIDA ,  Yuki YOKOHATA ,  Ippei SHAKE

IPC分类号： G01C21/34 ,  H04L29/08 ,  G06F16/29 ,  G06F16/955 ,  G01C21/36

摘要： A sidewalk network information generation device in an embodiment includes a sidewalk centerline data storage device configured to store sidewalk centerline data indicating a plurality of sidewalk centerlines, a detection unit configured to detect an end point and a corner point of each of the plurality of sidewalk centerlines from the sidewalk centerline data stored in the sidewalk centerline data storage unit, and a link information generation unit configured to select, from among the end points and the corner points of the plurality of sidewalk centerlines detected by the detection unit, first coordinates indicating an end point or a corner point of a first sidewalk centerline and second coordinates indicating an end point or a corner point of a second sidewalk centerline within a certain distance from the first coordinates, and generate link information for linking the plurality of sidewalk centerlines on the basis of the selected first and second coordinates.

公开(公告)号：US20230154312A1

公开(公告)日：2023-05-18

申请号：US17919234

申请日：2020-04-21

申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION

发明人： Kohei MORI ,  Takahiro HATA ,  Yuki YOKOHATA ,  Aki HAYASHI ,  Kazuaki OBANA

IPC分类号： G08G1/01 ,  G08G1/04 ,  G08G1/065

CPC分类号： G08G1/0112 ,  G08G1/04 ,  G08G1/065

摘要： A state estimation method executed by a state estimation apparatus including a processor and a memory storing program instructions that cause the processor to estimate a state related to congestion on a subject lane, includes acquiring a state related to congestion of a monitoring vehicle traveling on a non-subject lane, counting a number of vehicles traveling on the subject lane, the vehicles being overtaken by the monitoring vehicle or being oncoming vehicles passed by the monitoring vehicle, and estimating the state related to the congestion on the subject lane, using the state related to the congestion of the monitoring vehicle and the number of vehicles. In the estimating, when the number of the vehicles is equal to or greater than a threshold value according to the state related to the congestion of the monitoring vehicle, the state related to the congestion on the subject lane is estimated as traffic congestion.

公开(公告)号：US20210390847A1

公开(公告)日：2021-12-16

申请号：US17263837

申请日：2019-07-25

申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION

发明人： Manabu YOSHIDA ,  Yuki YOKOHATA ,  Kouhei MORI ,  Takahiro HATA ,  Ippei SHAKE

IPC分类号： G08G1/01 ,  G06K9/00 ,  G06K9/62 ,  G08G1/0967 ,  G05B13/02

摘要： A driving assistance device according to an embodiment includes a hardware processor and a memory, in which the hardware processor is configured to execute: acquiring image data captured in a vehicle and sensor data relating to a driving operation; converting an image in each frame included in the image data into an image feature amount indicated by the image; combining the image feature amount and the acquired sensor data; performing, based on the combined data, a learning process for a driving assistance information learning model used when a target value relating to the driving operation by a driver of the vehicle is generated from the image feature amount included in the combined data; and generating, when new image data captured in the running vehicle is acquired, the target value relating to the driving operation based on the image feature amount converted from the acquired new image data and the driving assistance information learning model.

公开(公告)号：US20210341605A1

公开(公告)日：2021-11-04

申请号：US17268942

申请日：2019-08-07

申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION

发明人： Manabu YOSHIDA ,  Yuki YOKOHATA ,  Kouhei MORI ,  Atsuhiko MAEDA ,  Takahiro HATA ,  Ippei SHAKE

IPC分类号： G01S17/06 ,  G01S17/89 ,  G06T7/70 ,  G06T5/50

摘要： A technique of estimating, based on a camera image captured from a mobile object, the position coordinates of an ambient object or the mobile object itself is offered. A plurality of camera images that are captured at different geographical locations and contain at least one identical stationary object are acquired; position coordinates of the imaging locations of the corresponding camera images are acquired; and the position coordinates of the stationary object are estimated based on the position coordinates of the imaging locations and gaze vectors oriented from a camera to the stationary object in each of the camera images. Alternatively, a camera image that contains at least two stationary objects having position coordinates that are known is acquired; and the position coordinates of a location at which the camera image is captured are estimated based on the position coordinates of each of the stationary objects and a gaze vector oriented from the camera to each of the stationary objects in the camera image.

公开(公告)号：US20240331422A1

公开(公告)日：2024-10-03

申请号：US18292175

申请日：2021-07-29

申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION

发明人： Kohei MORI ,  Yuki YOKOHATA ,  Aki HAYASHI ,  Takahiro HATA ,  Kazuaki OBANA

IPC分类号： G06V30/19 ,  G06T7/70 ,  G06V20/58 ,  G06V20/62 ,  G06V30/182

CPC分类号： G06V30/19013 ,  G06T7/70 ,  G06V20/58 ,  G06V20/625 ,  G06V30/1834

摘要： A recognition device acquires a time-series image acquired in an environment in which a vehicle travels, detects characters of a predetermined character string from the image, and evaluates relationship between detected characters of the character string and recognizes a shape of a target including the character string.

公开(公告)号：US20240273921A1

公开(公告)日：2024-08-15

申请号：US18566154

申请日：2021-06-08

申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION

发明人： Kohei MORI ,  Kazuaki OBANA ,  Takahiro HATA ,  Yuki YOKOHATA ,  Aki HAYASHI

IPC分类号： G06V20/56 ,  G06T7/00 ,  G06V10/764

CPC分类号： G06V20/588 ,  G06T7/001 ,  G06V10/764 ,  G06T2207/30256

摘要： A recognition device that detects a boundary of a roadway by use of time-series images captured by a camera mounted on a vehicle, the recognition device including: an acquisition unit that acquires the time-series images; and a detection unit that classifies areas in the acquired time-series images into a roadway, which is an area having a small change amount, and a portion other than the roadway, which is an area having a large change amount, according to magnitude of the change amounts, and detects a boundary between the area having the small change amount and the area having the large change amount as a boundary of the roadway.

公开(公告)号：US20230410644A1

公开(公告)日：2023-12-21

申请号：US18036865

申请日：2020-11-17

申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION

发明人： Aki HAYASHI ,  Yuki YOKOHATA ,  Takahiro HATA ,  Kohei MORI ,  Kazuaki OBANA

IPC分类号： G08G1/01

CPC分类号： G08G1/0133 ,  G08G1/0141 ,  G08G1/0129

摘要： A traffic congestion determination device includes an acquisition unit configured to acquire a total number of automobiles for each mesh obtained by virtually dividing a determination target region of traffic congestion and for each unit time, and a determination unit configured to determine whether occurrence of traffic congestion is sudden for each of the meshes based on the acquired total number of automobiles for each of the meshes and unit time.