VR_mannmath.ppt
- 1. Presented by Manmath nath Sahoo Roll. No.25242 Electrical Engineering Department Indira Gandhi Institute of Technology Sarang-759146,Dhenkanal Guided by: Dr. G.Panda 1 Electrical Engineering Department 1/7/2023
- 2. • INTRODUCTION • BASICS OF VR • TYPES • TECHNOLOGIES • VR DEVICES • APPLICATION • VRML • FINAL THOUGHTS 2 Electrical Engineering Department 1/7/2023
- 3. INTRODUCTION Virtual reality (VR) is a technology which allows a user to interact with a computer-simulated environment. Most virtual reality environments are primarily visual experiences, displayed either on a computer screen or through special stereoscopic displays But some simulations include additional sensory information, such as sound through speakers or headphones. 3 Electrical Engineering Department 1/7/2023
- 4. BASICS OF VR Now, we begin our study with the following interesting hypothesis: “if the great physicist, Albert Einstein, lived in our age and saw the film ‘Matrix’ (Figure ), what should he tell us?” Fig: space-time transformation between Einstein and Neo. (Real) (Simulated) 4 Electrical Engineering Department 1/7/2023
- 5. Continued... He would give us two principles • all the worlds are the same real. • simulated event and simulating event coexist. The former means if one has no enlightenments from other worlds, he cannot tell the world he is living in is virtual or real just as one cannot tell he is moving or resting if he has no reference system So “Reality is Relative” . Electrical Engineering Department 5 1/7/2023
- 6. Continued… Later can be verified by taking an example For computers, suppose there is a glinting ball in the simulated world by a computer, the counterpart of it in the simulating world is the combination of zeros and ones . For human brains, suppose there is a beautiful girl in someone’s imagination, the counterpart of it in the real world is the biochemical reactions in his brain. In fact, for anything in one’s imagination, there is its counterpart (biochemical reactions) in the real world. In sum, simulated events and simulating events coexist. Second principle says “simulated events and simulating events coexist”, which doesn’t mean that simulated events and simulating events exist in the same form. Electrical Engineering Department 6 1/7/2023
- 7. Types Immersive Non-imersive Desktop (Window on a World) Video Mapping 7 Electrical Engineering Department 1/7/2023
- 8. What is Immersive VR? A type of VR in which the user becomes immersed (deeply involved) in a virtual world. it is also a form of VR that uses computer related components. 8 Electrical Engineering Department 1/7/2023
- 9. Non-immersive VR Text-based VR: when a reader of a certain text form a mental model of this virtual world in their head from the description of people , places and things. 9 Electrical Engineering Department 1/7/2023
- 10. Technologies Four technologies crucial for VR 1. Visual Display 2. Graphics Rendering System 3. Tracking System 4. Database construction&maintenance Electrical Engineering Department 10 1/7/2023
- 11. Devices Head Mounted Displays (HMD): was the first device providing its wearer with an immersive experience. Evans and Sutherland demonstrated a head- mounted stereo display already in 1965. 11 Electrical Engineering Department 1/7/2023
- 12. DataGloves The DataGlove consists of a lightweight nylon glove with optical sensors mounted along the fingers. The sensors measure the bending angles of the joints of the thumb and the lower and middle knuckles of the others fingers. 12 Electrical Engineering Department 1/7/2023
- 13. Cave Automatic Virtual Environment (CAVE) A room with projections on all walls, floor and ceiling The users wear shutter glasses to get a 3D view of the world. The users are able to move and control the environment with some kind of input mechanism ◦ Camera ◦ Device in hand 13 Electrical Engineering Department 1/7/2023
- 14. 3D Mouse and Space Ball 1. 3D mouse based on ultrasonic position reference array 2. SpaceBall a 6DOF interactive input device Electrical Engineering Department 14 1/7/2023
- 15. Applications Architecture Education and Training Medicine Entertainment Simulation and Ergonomy 15 Electrical Engineering Department 1/7/2023
- 16. Architecture An area in which virtual reality has tremendous potential is in architectural design. Already being created are architectural "walk- throughs" that allow designers and clients to examine homes and office buildings, inside and out, before they're built. With virtual reality, designers can interactively test a building before construction begins. Electrical Engineering Department 16 1/7/2023
- 17. Medicine Computerisred 3D model provides a new approach to research and medicine Using DataGloves and HMD in surgery Application of virtual humans in orthopedics Experimenting virtual humans in research Electrical Engineering Department 17 1/7/2023
- 18. Education and Training United States: The military used it as flight simulators to train pilots. National Aeronautics and Space Administration (NASA) use VR technology to construct a model of the Hubble Space Telescope (HST) .in September, 1993, approximately 100 members of the NASA HST flight team received over 200 hours of training using the VR... Electrical Engineering Department 18 1/7/2023
- 19. Entertainment This is the area which starts to drive the development of VR technology. The biggest limiting factor in VR research today is the sheer expense of the technology. It is expensive because the volumes are low. For entertainment, mass production is required. Electrical Engineering Department 19 1/7/2023
- 20. Simulation and Ergonomy VR is a very powerful tool to simulate new situations especially to test the efficiency and the ergonomy. For example, we may produce immersive simulation of airports, train stations, metro stations, hospitals, work places, assembly lines, pilot cabins, cockpits, access to control panel in vehicles and machines. In this area, the use of Virtual humans is essential and even simulation of crowds is essential. We may also mention game and sport simulation. Electrical Engineering Department 20 1/7/2023
- 21. VRML VRML (virtual reality modelling language) is a standard file format for representing 3D interactive vector graphics. By using VRML any object can specified with color ,textures, shininess ,transparency and so on. VRML was created in C++ language,datas are indexed with rising value from number 0. 21 Electrical Engineering Department 1/7/2023
- 22. Final Thoughts Virtual Reality is a milestone in the field of technology. So much can be gained through virtual reality Some programs are almost as real as life. Nothing beats the real thing. 22 Electrical Engineering Department 1/7/2023
- 23. References Ellis SR (1991) Nature and Origin of Virtual Environments: A Bibliographic Essay, Computing Systems in Engineering, 2(4), pp.321-347. Astheimer P, Dai, Göbel M, Kruse R, Müller S, Zachmann G (1994) Realism in Virtual Reality, in: Magnenat Thalmann N and thalmann D, Artificial Life and Virtual reality, John Wiley, pp.189-209. Slater M, Usoh M (1994) Body Centred Interaction in Immersive Virtual Environments, in: Magnenat Thalmann N and thalmann D, Artificial Life and Virtual reality, John Wiley, pp.125-147. Ware C, Jessome DR (1988) Using the Bat: a six-dimensional mouse for object placement, IEEE CG&A Vol 8(6) pp 65-70 (1988). Bergamasco M (1994) Manipulation and Exploration of Virtual Objects, in: Magnenat Thalmann N and Thalmann D, Artificial Life and Virtual Reality, John Wiley, pp.149-160. 1/7/2023 Electrical Engineering Department 23
- 24. THANK YOU 1/7/2023 Electrical Engineering Department 24