公开(公告)号：US20180216959A1

公开(公告)日：2018-08-02

申请号：US15505923

申请日：2014-09-01

Applicant: Beijing Noitom Technology Ltd.

Inventor： Ruoli Dai ,  Haoyang Liu ,  Longwei Li ,  Jinzhou Chen ,  Baojia Gui

IPC: G01C25/00 ,  G06F3/01 ,  B81B7/02 ,  B81B7/04

CPC classification number: G01C25/005 ,  B81B7/02 ,  B81B7/04 ,  B81B2201/0235 ,  B81B2201/0242 ,  G01C21/10 ,  G06F3/011 ,  G06F3/0346

Abstract: A combined motion capturing system comprises multiple inertial sensor units (101), at least one communication unit (102), and a terminal processor (103). The inertial sensor units (101) are connected to the communication unit (102). The communication unit (102) is connected to the terminal processor (103). The inertial sensor units (101) are mounted at positions of one or more motion capture objects according to different combination modes, and measure motion information of the positions where the inertial sensor units (101) are mounted, and send the motion information to the communication unit (102). The communication unit (102) receives the motion information output by inertial sensors, and sends the motion information to the terminal processor (103). The terminal processor (103) acquires information about the motion capture objects and mounting position information of the inertial sensor units (101), generates combination modes of the inertial sensor units (101) according to the information of the motion capture objects and the mounting position information, receives the motion information sent by the communication unit (102), and processes the received motion information according to the combination modes to acquire complete postures and the motion information of the motion capture objects. By freely combining the same set of motion capturing devices, different motion capturing objectives are achieved, and the cost is reduced.

公开(公告)号：US10679360B2

公开(公告)日：2020-06-09

申请号：US15817373

申请日：2017-11-20

Applicant: Beijing Noitom Technology Ltd.

Inventor： Ruoli Dai ,  Haoyang Liu ,  Longwei Li ,  Jinzhou Chen ,  Baojia Gui ,  Haotian Chen

IPC: G06T7/277 ,  G01P15/18 ,  G01P3/38 ,  G01D21/02 ,  G06T7/70 ,  G01P15/08 ,  G01P15/14

Abstract: A mixed system for capturing motions of an object and its use method is disclosed. The mixed system includes at least one inertial sensor module and at least one optical marker mounted on the object, and at least two optical cameras. Each inertial sensor module measures inertial information and spatial attitude information, and each optical camera captures image information of the at least one optical marker. Based on the collected information, a receiving processor respectively generates inertia-based position information and optics-based position information, and further integrates the above information to obtain position information of the object. Integration may involve assignments of different weights to the inertia-based position information and the optics-based position information based on respective measurement errors of the at least one optical marker and the at least one inertial sensor module. The inertia-based position information may be corrected based on biomechanical constraints and/or external constraints.