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A system and method for human motion reconstruction and analysis based on inertial sensing unit

A technology of inertial sensing and human motion, applied in sports biomechanics, sensing technology, medical and health fields, to achieve efficient acquisition, avoid deformation and stiffness, and reduce discomfort

Active Publication Date: 2017-09-22
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The focus of this patent research is on the data analysis of a single head motion posture, but does not involve the 3D virtual reconstruction of human body movements and human motion analysis

Method used

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  • A system and method for human motion reconstruction and analysis based on inertial sensing unit
  • A system and method for human motion reconstruction and analysis based on inertial sensing unit
  • A system and method for human motion reconstruction and analysis based on inertial sensing unit

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Effect test

Embodiment 1

[0046] The user uses the present invention to make 3D character animations, which requires real-time capture and reconstruction of various movements of the human body. The user wears the present invention according to the above method, unifies the clocks of each inertial sensing unit 101, and establishes a start Acquisition task, the user makes various actions, each inertial sensing unit 101 collects once every 10 milliseconds, and fuses and calculates the local posture information of each human body segment, and sends the collected 100 milliseconds every 100 milliseconds. The posture information data is given to the WIFI wireless router 102, and the WIFI wireless router 102 receives the data and forwards it to the computer automatically immediately, and the central computer 103 sets up a virtual 3D human body model, constantly updates the posture situation of each human body segment according to the posture information data, and sends the posture information The data is stored...

Embodiment 2

[0048] The user uses the present invention to perform medical rehabilitation analysis and evaluation, which requires capturing and reconstructing the movement of the evaluated patient's local affected area. The patient wears several inertial sensing units 101 at a specific position according to the needs, and the user uses the computer software to Unify the clocks of each inertial sensing unit 101 of the posture information acquisition system and select the local motion reconstruction mode to establish an acquisition task. The patient makes a specific action according to the requirements, and each inertial sensing unit 101 collects data every 10 milliseconds. And be fused and calculated so as to obtain the human body posture information of the patient's specific position, and send the collected posture information data to the WIFI wireless router 102 every 100 milliseconds, and the WIFI wireless router 102 will automatically forward the data to the central computer 103 immediate...

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Abstract

The invention discloses a human body movement reconstruction and analysis system and method based on inertial sensing units. The system comprises a pose information acquisition system, a WIFI wireless router and a central computer. The pose information acquisition system is composed of the inertial sensing units. The inertial sensing units are installed on multiple parts of a human body respectively to collect accelerated velocities, angular velocities and magnetic information of all the parts in real time and fuse the accelerated velocities, the angular velocities and the magnetic information to obtain pose information such as pose angles, quaternions and Euler angles; next, the collected information and the fused information are sent to the central computer through the WIFI wireless router in a WIFI mode; the central computer fuses pose information data of all the inertial sensing units to complete human body movement reconstruction and extracts movement parameters such as positions, velocities, angles, the accelerated velocities and angular accelerated velocities, and the movement parameters are used for biomechanical analysis and kinematic analysis of human body movement. By means of the human body movement reconstruction and analysis system and method, influences on the movement of a subject are reduced to the maximum extent, the requirements for capturing the movement of the whole body of the subject and the special movement of a specific part of the subject are both met, and the system and method are suitable for various application occasions.

Description

technical field [0001] The invention relates to the fields of sensing technology, sports biomechanics, medical care and hygiene, and in particular to a system and method for reconstructing and analyzing human body movements based on inertial sensing units. Background technique [0002] Human motion capture and reconstruction technology is an important research direction in 3D character animation, medical treatment, and biomechanics research. It has attracted much attention in the field of optical scanning. People use video to track and capture human body movements, or use optical marker positioning methods to scan human bodies, obtain human body motion parameters and reconstruct human body structure and posture from motion. Behavior is understood, analyzed and applied. Human motion capture and reconstruction technology is mainly used in 3D virtual realization, biological motion analysis, medical assessment and rehabilitation plan formulation, etc., which has a profound impa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/01G06T13/40
CPCG06F3/011G06F3/0346G06T13/40G06T17/00
Inventor 唐正李晓静许胜强宋旭张阳杨先军王涛王强马祖长张晓翟李红军孙怡宁周旭
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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