Optical and inertial hybrid motion capture system

Abstract

The invention relates to an optical and inertial hybrid motion capture system including an inertial data receiver, multiple motion capture cameras, multiple optical and inertial hybrid acquisition modules and multiple inertial acquisition modules. Each optical and inertial hybrid acquisition module includes an inertial acquisition module and at least one optical marking point, and the optical marking point and the inertial acquisition module are fixed with each other; each inertial acquisition module includes an inertial sensor and an inertial data transmitter; each inertial acquisition moduleincludes an inertial sensor and an inertial data transmitter; the inertial data receiver receives inertial data transmitted by the inertial data transmitter through a wireless mode, and each motion capture camera detects optical data of the optical marker points in each optical and inertial hybrid acquisition module. Each optical and inertial hybrid acquisition module can simultaneously acquire inertial data and optical data of a same part, so as to solve the problem of low accuracy caused by single inertial data or optical data.

Description

technical field [0001] This application relates to the field of motion capture, in particular to an optical and inertial hybrid motion capture system. Background technique [0002] With the rapid development of computer software and hardware technology and the improvement of animation production requirements, at present, motion capture has entered the practical stage, and many manufacturers have launched a variety of commercial motion capture equipment, which are successfully used in virtual reality, Games, ergonomics research, simulation training, biomechanics research and many other aspects. [0003] Motion capture is to set a tracker on the key part of the moving object, and then the real-time position of the tracker is captured by the motion capture system, and then the data of the three-dimensional space coordinates of the tracker are obtained after computer processing. [0004] The existing commonly used motion capture systems include optical motion capture systems an...

AI Technical Summary

Problems solved by technology

[0004] The existing commonly used motion capture systems include optical motion capture systems and inertial motion capture systems. The applicant found that the optical motion capture system relies on optical markers. In practical applications, once the optical markers are blocked, data will be lost; and The inertial motion capture system relies on the inertial sensor. Although it can capture continuous data, the accuracy of the inertial sensor will gradually decrease over time, and it is easily affected by the external environmental magnetic field. Errors and offsets will occur after long-term use, which will affect the accuracy of motion capture. sex

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