Software Design Of Human Motion Capture System

Motion capture technology involves many disciplines,such as inertial navigation,communication,human engineering,computer graphics and so on.In recent years,with the development of sensor technology,the innovation of inertial navigation technology and the improvement of hardware level,motion capture technology has developed rapidly.Motion capture has developed to a certain level both at home and abroad.Both university research institutes and enterprises have explored the field of motion capture deeply,and commercial products with stable performance have appeared on the market.It has been widely used in medical,film and television production,virtual reality and other fields.For example,in the process of making large 3D games,optical motion capture technology and virtual reality technology have been combined perfectly to make animated characters of very real characters.In the field of film and television production,"Gladiator" and "demon zone" and other popular movies are a lot of use of human motion capture technology,so that the role of the more realistic and endowed with vitality.The whole framework of the human action capture system is composed of the lower computer and the host computer.The lower computer is the sensing node distributed in the whole body,and the data of the sensor nodes are sent to PC in real time by wireless module.The PC software platform running on PC,PC through the wireless communication technology to receive real-time sensing node data analysis software platform and the data processing,real-time reconstruction of human posture will be calculated for computer graphics,real-time reconstruction of human motion in the virtual scene in 3D.This paper,based on micro inertial sensor technology,combination of the principle of inertial navigation,through the application of data fusion algorithm,computer graphics principle and technology as well as the corresponding programming technology,finally completed the design of human gesture capture system software platform.The software system mainly realizes the multiple sensor nodes to send data packets for real-time packet receiving,unpacking and preprocessing of data;using a data fusion algorithm,the fusion of multiple sensor data,complete the calculation of human body posture.The human body is represented by four variables,and the human model is driven in real time,and then the human motion is reconstructed.In this paper,the movement of human body and the structure of human body are studied,and the model of human body is simplified.In order to make the human movement reconstruction more realistic and less computational,this paper uses skin skeleton animation technology.In order to make the software system run well under the Windows system,this paper chooses the Direct X graphical interface library and the MFC framework as the basic framework of the software.The corresponding interface of the DirectX interface library is called,and the loading of the 3D human model is completed.The coordinates of the human body in the navigation system are converted into screen coordinates to drive the human body model.From the final demonstration of the action capture effect,the body tracking effect is good.