公开(公告)号：US20230046001A1

公开(公告)日：2023-02-16

申请号：US17975168

申请日：2022-10-27

Applicant: Socionext Inc.

Inventor： Tetsuya TANAKA ,  Yukihiro SASAGAWA

IPC: G06T7/73 ,  G01C21/00

Abstract: A map information update method includes: (a) obtaining map information; (b) obtaining landmark observed positions indicating positions of one or more landmarks in a captured image; (c) adding that includes (i) generating added map information by adding information pertaining to the landmark observed positions to the map information, and (ii) updating the map information obtained in (a) to the added map information; (d) predicting that includes (i) calculating predicted map information based on the map information updated in (c), by using a neural network inference engine that has been trained, and (ii) updating the map information to the predicted map information; and updating information that includes (i) calculating updated map information based on the map information updated in (d), by using a gradient method, and (ii) updating the map information to the updated map information.

公开(公告)号：US20230335016A1

公开(公告)日：2023-10-19

申请号：US18341466

申请日：2023-06-26

Applicant: Socionext Inc.

Inventor： Tetsuya TANAKA ,  Yukihiro SASAGAWA

IPC: G09B29/10 ,  G06T7/70

CPC classification number: G09B29/106 ,  G06T7/70

Abstract: A map information update method includes: obtaining one or more projection relationships; obtaining, for each projection relationship, reprojection error information; calculating, for each of one or more landmarks, a first sum value based on all items of reprojection error information associated with the landmark; calculating, for each of one or more keyframes, a second sum value based on all items of reprojection error information associated with the keyframe; inferring from the first sum value, for each landmark, a position information update value of an item of position information about the landmark, and updating the item of position information about the landmark using the position information update value; and inferring from the second sum value, for each keyframe, a pose information update value of an item of pose information about the keyframe, and updating the item of pose information about the keyframe using the pose information update value.

公开(公告)号：US20210026458A1

公开(公告)日：2021-01-28

申请号：US17069142

申请日：2020-10-13

Applicant: SOCIONEXT INC.

Inventor： Tetsuya TANAKA

IPC: G06F3/01 ,  G06F3/16 ,  H04B17/27

Abstract: Each of radio wave sensors is associated with one of sensing areas, each being an area for sending a radio wave signal toward a moving body and receiving the radio wave signal reflected by the moving body. A gesture recognition method includes identifying, as a gesture occurrence area in which the moving body has made a gesture, one of the radio wave sensors based on results of reception by the sensing areas; and recognizing the gesture based on a result of reception by only one of the radio wave sensors associated with the gesture occurrence area.