RESEARCH METHOD B. System setup 2/ Install Sensor Kinect driver program as provided by Prime Sense, Support OpenNI bottom layer. 3/ Install NITE as provided by Prime Sense. Support OpenNI medium layer and analyze the scene and human skeleton structure (figure 4 and figure 5). 4/ Implement the default calibration posture as defined by NITE. 1 Figure 4. Analyze the scene structure. Figure 5. Analyze human skeleton structure.

RESEARCH METHOD B. System setup The main objective of the game is to implement the practice of the upper limb action. In the virtual reality environment, one virtual character is receiving ball within it. The person under test must let Kinect be able to detect his action through the extension of the arm, and the controlling of the ball receiving direction by the virtual figure is then corresponded. 2 Figure 6. Kinect Reaching Ball / Figure 7. Kinect Catch Ball. Figure 8. The user interacts with the virtual environment.

DISCUSSUONS  In medicine, it is clear that patient after brain stroke usually shows symptoms such as limb disability, mental degradation as well the accompanying depression. The main functions of virtual reality game rehabilitation platform are, for example, promotion of the therapeutic exercise for stroke patient, the cortical reorganization of the brain and the recovery of the function of the upper limb. Rehabilitation exercise usually uses the real time prize and encouragement characteristic as used in TV game, which can aggressively improve the barrier of patient’s psychological and emotional state. 3

CONCLUSION  Due to the progress in the body sensing technology of electronic entertainment, technology of new era has been associated with rehabilitation medical care to set up virtual reality, accompanied with the use of Kinect, to be applied in rehabilitation training of the stroke patient. As compared to traditional expensive rehabilitation equipment, it is relative of lower price and has the clinical practical utility. Moreover, the interface design is active and attractive, and it is a conversion from boring status to happy status.  Currently, it is still needed to set up better system, accompanied with long term observation, so as to confirm the clinical effectiveness. It is believed that it will be more popular and go in depth into the family in the future. It is hoped that the result of this topic can be helpful to the rehabilitation medical care process. 4

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