17-09-2014, 03:44 PM
Virtual reality (VR) is a technology which allows a user to interact with a computer-simulated environment, whether that environment is a simulation of the real world or an imaginary world. Therefore,it is capable of shifting a subject into a different environment without physically moving him/her.To this end the inputs into the subject’s sensory organs are manipulated in such a way, that the perceived environment is associated with the desired virtual environment and not the physical one.The manipulation process is controlled by a computer model that is based on the physical description of the VE.Consequently the technology is able to create almost arbitrarily perceived environments. Most current virtual reality environments are primarily visual experiences, displayed either on a computer screen or through special or stereoscopic displays, but some simulations include additional sensory information, such as sound through speakers or headphones.Immersion is a key issue in VR systems as it is central to the paradigm where the user becomes part of the simulated world, rather than the simulated world being a feature of the user’s own world. In Virtual reality, users can interact with a virtual environment or a virtual artefact (VA) either through the use of standard input devices such as a keyboard and mouse, or through multimodal devices such as a wired glove and an omnidirectional treadmill.Different tracking systems are employed in order to know the position and movement of the user in virtual environment like electromagnetic tracking systems,optical tracking systems and mechanical tracking systems.VR may offer enormous benefits to many different applications areas like medical science,simulators, entertainment and education.This is one main reason why it has attracted so much interest.VR is currently used to explore and manipulate experimental data in ways that were not possible before. This seminar report enlightens all these aspects of virtual reality. It shows how it is going to change our life in the future. Furthermore various challenges in Virtual reality are put forth and future of Virtual reality is discussed.