1. VIRTUAL REALITY PRESENTED BY, JANSIRANI.T, NIRMALA.S, II-ECE

2. INTRODUCTION  VR is generally a computer generated environment that makes the user think that they are in the real environment.  Virtual world is hosted on a computer in the form of database.  Virtual objects consists of polygon  It will have a position (x,y,z) an orientation as well as attributes.

3. VR provides interaction through the use of sensors and effectors in a simulated environment. VR provides interaction through the use of sensors and effectors in a simulated environment. Advanced in simulation technology allow computer resources to be interconnected with humans through the use of sensor systems and robotic devices. Advanced in simulation technology allow computer resources to be interconnected with humans through the use of sensor systems and robotic devices. Types- Desktop VR system and Immersive VR system Types- Desktop VR system and Immersive VR system

4. CHARACTERISTICS OF IMMERSIVE VR SYSTEM Head referenced viewing provides a natural interface for the navigation in three dimensional space. Head referenced viewing provides a natural interface for the navigation in three dimensional space. Stereoscopic viewing enhances the perception of depth and sense of space. Stereoscopic viewing enhances the perception of depth and sense of space. Virtual world is presented in full scale and relates properly to the human size. Virtual world is presented in full scale and relates properly to the human size. Realistic interactions with virtual objects through data glove. Realistic interactions with virtual objects through data glove.

5. HEAD MOUNTED DISPLAY Channels the images from the screens to the eyes, presenting a stereo view of a virtual world. Continuously measures the position of users head and adjust the scene representation to the current view. Viewer can realize the surrounding virtual environment

6. BOOM  Head coupled stereoscopic display device.  User looks into the box through two holes sees the virtual world.  Head tracking is accomplished through sensors in the links of arm that holds the box.

7. VIRTUAL RETINAL SYSTEM Visual display device that uses scanned light beams. Instead of viewing a screen the user gets the image scanned directly into the eye. Every small spot is focused onto the retina. Uses low power and very bright.

8. Applications To develop nanotechnology devices and chemical systems. NASA uses 3 dimensional simulations of the space station, the landscape of MARS were constructed. Image guided surgery in medical field. Searching of networked databases and libraries.

9. Prototyping and planning and complex computer tasks. Prototyping and planning and complex computer tasks. Assistance for handicapped Assistance for handicapped To treat phobias (fear of height ). To treat phobias (fear of height ). In orthopedics and neurosurgery. In orthopedics and neurosurgery. Design evaluation and maintainenance tasks Design evaluation and maintainenance tasks

10. CONCLUSION VR is new but rapidly growing area in medicine which will revolutionize the health care in future. The impact of this technology is just beginning to recognized to technical breakthrough in the past few years. physician patient relationship must be incorporated into new systems.

11. THANK YOU QUERIES………..