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Large-scale real-time human motion acquisition reconstruction system

A technology of human body movement and reconstruction system, applied in signal transmission systems, instruments, electrical digital data processing and other directions, can solve the problems of high cost and high efficiency of human data transmission without considering human body data, and achieve real-time efficient storage and transmission, low cost, high cost. The effect of precision

Active Publication Date: 2019-09-03
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing motion capture devices on the market are generally aimed at single-person human motion acquisition, which is costly and does not consider the transmission efficiency of human body data

Method used

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  • Large-scale real-time human motion acquisition reconstruction system
  • Large-scale real-time human motion acquisition reconstruction system
  • Large-scale real-time human motion acquisition reconstruction system

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] Embodiment 1 is a data file compression method implemented in the form of angle values. In the BVH file, the root node data contains three displacement data and three rotation angle data, except for the root node data, the data of any bone node is only composed of three rotation angle data. Therefore, first extract the rotation angle of each node in the human motion data file. In the process of human motion data acquisition, the range of rotation angle data that usually needs to be stored is limited to [-180,180]. Since this embodiment adopts the form of an angle value, there is no need to convert the rotation angle data, and the angle value can be directly split into a sign, an integer part and a decimal part.

[0061] Regardless of the sign bit, the value range of the integer part of each rotation angle is between [0,180], so 8-bit binary data is sufficient for complete expression. Then analyze the fractional part. Since the bone sensor accuracy of the inertial moti...

Embodiment 2

[0067] Embodiment 2 is a data file compression method implemented in the form of radian values. In the process of human motion data acquisition, the range of rotation angle data that usually needs to be stored is limited to [-180,180]. Since some applications use radian value information, it is necessary to represent the rotation angle data as a radian value, that is, to convert each angle value into a radian value. The angle range of [-180,180] corresponds to the range of radians [-3.1416,3.1416]. Split a radian value into a sign, integer part, and fractional part.

[0068] Regardless of the sign bit, the integer part of each radian value is fully expressed using 2 bits of binary data. Then analyze the fractional part. Since the bone sensor accuracy of the inertial motion capture device with the highest precision on the market is about 0.02 degrees, the number of decimal places to be retained can be determined accordingly, that is, the accuracy of the compressed data can be...

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Abstract

The invention relates to a large-scale real-time human motion acquisition reconstruction system, which comprises a plurality of sets of node sensors, a hub, a data receiver, a processor, a motion reconstruction module, a memory and a cloud server, wherein each group of node sensors is used for acquiring a gravity acceleration, a rotation rate and magnetic data and transmitting the data to the hub;the hub transmits the collected data to the data receiver; the data receiver transmits the received data to the processor through a USB virtual serial port; and the processor performs fusion solutionon the sensor data, and the data are transmitted to the motion reconstruction module for real-time human motion reconstruction, the data are compressed at the same time, the compressed data are savedto the memory and uploaded to the cloud server. The system provided by the invention can realize large-scale human motion acquisition with low cost and high precision, real-time monitoring on the acquisition process is carried out, and real-time efficient storage and transmission of human motion data are realized.

Description

technical field [0001] The present invention relates to a human body motion collection and reconstruction system, in particular to a large-scale real-time human body motion collection and reconstruction system. Background technique [0002] With the rapid development of information technology, people have carried out extensive exploration and research on the use of data-driven animation technology and simulation technology. These technologies mainly realize real-time data collection of human motion data by wearing motion capture equipment, and at the same time use relatively mature motion reconstruction technology to reproduce the collected human motion data in three dimensions. [0003] With the in-depth research on human motion data, people began to build a standard human motion library, and use the data in the human motion library to accurately describe, measure and evaluate human motion. Due to the many types and large data scale involved in the human motion library, wh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08C17/02G06F13/42G06F13/38
CPCG06F13/385G06F13/4282G06F2213/0042G08C17/02
Inventor 黄天羽曾贲吴爽李祥晨
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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