Research On Rehabilitation Training System Based On Depth Sensor

Today the theme of world is the peace and development,and the stable environment results in increase of the average life.The people are aging quickly in the world,which brought a lot of problems,such as the increase of the patients with limb dysfunction.It results in the demand of habilitation training.Traditional rehabilitation methods have some inherent problems,such as high price,wearing bulky auxiliary equipment to perform rehabilitation training at a fixed scenario,time-consuming,energy-consuming,etc.The appearing depth sensor Kinect has the feature to track the location of bone points,which makes home rehabilitation training possible.Herein in this thesis,Kinect and Unity3 D are used to develop a rehabilitation training system for patients with limb dysfunction.The system is low-cost and is easy to use.Experimental results showed that this system is practical and effective.The main work is as follows:(1)With the traditional rehabilitation training method,the training scene is monotonous and boring,and the patients do not feel well during training.In this system,Firstly,the terrain component of Unity3 D is used to draw various landforms,and 3ds Max is used to model complex objects in the rehabilitation training scene.Then the textures are added to the landforms and object models.After that,particle and animations component are used to create dynamic effects for the scene.Finally,the light component is used to present the rehabilitation training scene with natural green.By changing the position and angle of camera,the training scene can be switched at any time so as to provide different scene experience to patients.(2)In this thesis,the position of the patient in the Kinect coordinate system is used to update the position of the character model in the local coordinate system,and the rotation quaternions of 25 joints of the patient are used to calculate and update the rotation quaternions of the joints of the character model during the training process,so as to realize the mirror movement function of the character model following the patient.It allows patients to monitor the progress of rehabilitation without special nurses.For some domestic and foreign researches on rehabilitation training system lacking the evaluation of training effect.In this thesis an assessment method is designed for side lift,left leg lift,right leg lift,squat,left hand lift,right hand lift and front lift.This method uses the relative position relationship of the joints or the rotation angle of the corresponding joints during the training which can quantitatively analyze the training effect of patients.(3)The free and open source relational database Mysql is used to store the completion score and completion time of each rehabilitation action during the rehabilitation training process,which helps the evaluation and analysis of the patient’s rehabilitation during the entire rehabilitation cycle.The design and implement of the UI and sound system make the entire rehabilitation training system more perfect and more comprehensive.