21-06-2012, 04:09 PM
A Data-driven 3D Animation System for Tele-Rehabilitation
A Data-driven 3D Animation System.docx (Size: 330.75 KB / Downloads: 49)
ABSTRACT
In this paper, a novel data-driven 3D animation system is developed for stroke patients to use remotely at home environments to recover their motor function. This system consists of our main components, namely human motion tracking, data analysis diagram, data-driven arm animation, and text-driven speech animation. It also contains an expert database and transmission of data files over the Internet. Both patients and therapists can use this system to compare 3D mimic animation with historical case studies of normal and abnormal motions.
WORK DONE
Here I presented an assistive technology known as data driven 3D animation system for tele-rehabilitation of stroke patients.Our data-driven 3D animation system is divided into a number of functional blocks: motion tracking sensors, 3D animation, data analysis Diagram, and evaluation and suggestion by a digital human model. The diagram for system architecture is shown below
Here two MTx inertial sensors are used,one fro upper limb and other for lower limb. It consists of sensor fusion and optimization techniques to support post-stroke rehabilitation programs. It is implemented in Visual C++. There is a Bluetooth wireless connection between the computer and two MTx sensors via a small box worn on the waist. The wireless connection allows the subject to carry out motion exercises freely. Each sensor consists of a tri-axial accelerometer, a tri-axial gyroscope, and a tri-axial magnetic sensor. It measures drift-free 3D orientation as well as kinematic data: 3D acceleration, 3D rate of turn (rate gyro) and 3D earth-magnetic field data of the patient’s arm, of which real-time 3D arm movements can be reconstructed with 3Ddemonstration as follows..
SEMINAR REPORT
INTRODUCTION:
In the Europe, as well as USA and other developed countries, stroke is the most common cause of permanent disability. Therefore, a lot of people live with moderate to severe disabilities as a result of stroke . Economic pressures force these patients to return to their homes quickly after the initial rehabilitation programme in hospitals. However the evidence shows that the potential for improving motor
function may last a number of years after stroke. Hence,it is necessary for patients to continue some rehabilitation programmes in their home environments using some forms of assistive technology.
EXPERIMENTAL WORK
We first did the motion detection and obtained three groups of data files from testing, which are reaching, drinking and reach-flexion tests. Here we only present the 3D animation experiments since the motion detection experiment and associated results will be presented in a forthcoming paper “An Interactive Internet-based System for Tracking Upper limb Motion in Home-based Rehabilitation”.
3D Animation Display
We use six degrees of freedom (6 DOF) to refer to motion in three dimensional space, i.e. the ability to move translation in three perpendicular axes (forward or backward, up or down,left or right) combined with rotation about three perpendicular axes (yaw, pitch, roll). The arm movement along each of the three axes is independent of each other and also is independent of the rotation about any of three axes. The motion therefore has six degrees of freedom. In fact, these six-DOF data sets come from transmission via P2P communication. The accuracy of our 3D animation depends on two issues.