Research On Taiji Auxiliary Training System Based On Kinect Motion Capture

With the rapid development of computer technology,and motion capture technology and other science gradually applied to the field of physical education,physical education is very practical,it's an appropriate supplement to traditional teaching by the application of modern science and technology,and it also can improve teaching efficiency of Taiji.Based on analysis of the requirements and the present situation of Taiji teaching,this paper designs and implements the Taiji assistant training system for the needs of Taiji beginners based on Kinect motion capture.It can provide students with Taiji video guidance,this system makes Kinect motion capture development platform used the motion capture technique to collect a good Taiji practitioner can be saved and used to set up standard action database after data filtering and noise reduction processing.It collect tester'motion data by the same way,and then display the color video stream of the tester to the interface window,then map the skeleton data stream to the color video and mark the position of the joints.After that,DTW algorithm is used to solve the corresponding frame matching.As the basis of score to achieve the purpose of judgment,angle and velocity feature are extracted from two sets of skeletal data by using feature extraction technique.According to the extracted features,it can give the tester with accurate assessment of the test after the comparison.By using VR Technology,this system assigns the rotation data of the joint of the tester to the joint point of the Unity3 D person model to complete the 3D reconstruction of Taiji.For the problem of distortion of the characters,this system gives solutions to realize the 3D reproduction.Test results show that the system combines motion capture technology and DTW algorithm and Unity3 D software to realize the auxiliary training and score of Taiji exercise,which can be used as reference for other auxiliary training system.