公开(公告)号：US20230377375A1

公开(公告)日：2023-11-23

申请号：US18031263

申请日：2021-10-04

Applicant: Hitachi High-Tech Corporation

Inventor： Takeshi TANAKA ,  Daisuke FUKUI ,  Hiromitsu NAKAGAWA ,  Takashi TOYOMURA

IPC: G06V40/20 ,  G06T3/60 ,  A61B5/11

CPC classification number: G06V40/25 ,  G06T3/60 ,  A61B5/112

Abstract: A motion visualization system 1 includes a skeleton recognition program 2 obtaining joint coordinates of a target person, a pitch extraction program 6 extracting a walk cycle of the target person based on the joint coordinates, and a storage unit 106 storing a skeleton normalization program 3 transforming coordinates of the joint coordinates in a reference coordinate system where a direction in which a predetermined portion of the target person moves is set as an axis of a traveling direction in one walk cycle extracted and transforming the joint coordinates based on information on the target person.

公开(公告)号：US20230005161A1

公开(公告)日：2023-01-05

申请号：US17793993

申请日：2020-09-10

Applicant: HITACHI HIGH-TECH CORPORATION

Inventor： Takashi TOYOMURA ,  Takeshi TANAKA ,  Daisuke FUKUI ,  Hiromitsu NAKAGAWA

IPC: G06T7/246 ,  G06T7/70 ,  G06V10/74

Abstract: In a motion analysis apparatus 101, a data input unit 205 acquires a first imaging result and a second imaging result. in the motion analysis apparatus 101, a skeleton recognition unit 206 recognizes skeleton positions of a subject using the first imaging. result acquired by the data input unit 205, and recognizes skeleton positions of the subject using the second imaging result acquired by the data input unit 205. A motion period extraction unit 403 extracts a period from a start of a motion to an end of the motion as a range of data for comparing skeleton feature points recognized by the skeleton recognition unit 206. The similarity calculation unit 401 compares skeleton feature points recognized for an input from a depth camera with skeleton feature points recognized for an input from an RGB camera to calculate similarities, and outputs a determination result based on the similarities.

公开(公告)号：US20210127984A1

公开(公告)日：2021-05-06

申请号：US17051237

申请日：2019-06-12

Applicant: Hitachi High-Tech Corporation

Inventor： Takeshi TANAKA ,  Sayaka KURATA ,  Takashi TOYOMURA

IPC: A61B5/0205 ,  A61B5/026 ,  A61B5/11

Abstract: The present invention aims to provide a blood flow analysis device capable of accurately identifying a change in the blood flow in a muscle caused by resistance exercise performed by a subject. A blood flow analysis device according to the present invention specifies a resistance exercise period during which a muscle of a subject present at a position to be measured by a motion sensor is performing a resistance exercise, and analyzes a light detection signal in the resistance exercise period, to thereby calculate a feature amount of a change in the blood flow in the muscle of the subject in the resistance exercise period (see FIG. 1).