A Feasibility Study Of Gait Analysis Based On Kinect

In implementing the national fitness program outline in the background,in view of the present gait analysis system is exposed in the practical application of the high cost,complicated operation,the external environment influence,this paper puts forward a gait analysis method based on the device,in order to solve the above problem for gait analysis in the popularity of the national fitness provides a new train of thought.First of all,using visual analysis method,with the analysis of knowledge map visualization tools,from a new research Angle of view for the development of the gait analysis at home and abroad as well as the related research results to access measurement and visualization analysis,makes every effort to dynamic frontier science,clear to present their research and development trend,then according to the results of the analysis using the method of literature collecting and organizing the relevant literature,in the literature study to access application development and gait analysis of relevant theoretical knowledge,on the premise of a rich theoretical knowledge to the gait analysis method based on the device of model building,according to the relevant contents of gait analysis and to access the skeleton tracking technology principle,mainly from the final body posture stability and two dimensions on both sides of the body of the symmetry of the gait analysis,the method to determine the need for access to the 12 key points of three-dimensional coordinates,on the basis of the coordinates and time,calculate the velocity,stride length,step width and equal walking gait parameters of time and space.Using Unity3D 5.3.4 map f on both sides of-the shoulder joint points trajectory,on both sides of the hip trajectory,on both sides of the knee point trajectory,on both sides of the ankle joint point trajectory,center of gravity and head movement,using the device for features provided by the Windows SDK 2.0 get elbow Angle changes on both sides,and drawn into curve,combined with the Euclidean distance formula to calculate the changes on both sides of the elbow point and the distance between the point of the hip,and drawn into curve,combined with the variance formula to calculate the head and trajectory of the center of gravity of discrete degree.Finally came to the conclusion that in the context of the national fitness,in view of the present gait analysis system performance in the practical application of a variety of shortcomings,puts forward a kind of gait analysis method based on the device,make the gait analysis show the operation is simple,low cost,low environmental impact,at the same time,three experiments were designed by the researchers proved that the method has good reliability and validity and efficiency,and by using this method on a random sample of a participant' s gait analysis,so as to verify the feasibility of the method.At the same time,the deficiency of this article is,as a result of the researcher's personal ability and energy is limited,in this method only realized in the process of human walking from the Angle of kinematics posture stability and on both sides of the body of the symmetry of the analysis of the two dimensions,rather than of gait to conduct a comprehensive analysis of the subjects;Subject to the precision of the device were not high,resulting in gait information acquired in this method is not so high precision gait analysis instrument.