Essay Example on In today's world we are surrounded by wonderful varieties of Technologies









Abstract In today's world we are surrounded by wonderful varieties of technologies We have acquired majorities of these technologies into our everyday lives Increasingly these different technologies are becoming integrated to provide new capabilities and services And most often a computer is the heart of this integration This is the case with Virtual Reality a so called technology which actually is a very sophisticated integration of a number of technologies Virtual Reality is a technology based on computer which assimilates specialized input and output devices by allowing the user to interact with and experience an artificial created environment as if it were in the real world A VR system allows the user to explore and interact with a three dimensional virtual or artificial environment generated by the designer In the virtual world the user can do all things similar to routine as throwing a tennis ball or as excellent as flying through space And these things can be made possible to occur by something as simple as a hand gesture or a nod Virtual Reality is a three dimensional computer generated interactive environment which simulate reality 

Virtual Reality can take us into a world which is imaginary and appears similar remarkably to our own For designing a virtual reality system one have to deals with ideas of spatial relationships and computer graphics which in turn are affiliated to mathematics physics arts and also human psychology In these virtual or synthetic environ ments one have to take into account various physics laws like gravity air resistance and speed etc Keywords Virtual Reality Computer based technology Virtual Environment Artificial Environment Second life Augmented Reality 1 INTRODUCTION Virtual Reality VR technology is becoming more perfect and immerging with the aid of computer hardware software and virtual world integration technology which can simulate the real world dynamically This technology can make reaction according to people s form language and So on immediately after a real time commu nication is formed between people and virtual world Hence for past few years such technology has catch up much attention of researchers and companies Virtual Reality VR can be defined as use of computer modelling simulations which help a person in interacting with artificial 3D enviro nment This 3D artificial environment shows reality with help of some interactive devices which can send and receive information and are worn in form of goggles headsets gloves or body suits etc In other words virtual reality can be defined as use of computer graphics to simulate presence physically in artificial or virtual environment to create a realistic looking world Virtual Reality is a real time and interactive technology which means that the computer can detect itself user inputs and modify instantaneously the virtual world 

Most latest VR environment are primarily visual experiences which are displayed on a computer screen but some simulations may require addi tional sensory information such as speakers or headphones Sometimes Users can also make interaction with a virtual environment either by use of standard input devices such as a key board mouse etc In practice it is much hard currently to get a high fidelity virtual reality experience mostly because of technical limitations on processing power image resolution However those limi tations are expected to eventually be overcomed by use of more powerful cost effective proce ssor and imaging technologies over time 2 LITERATURE REVIEW Bharath et al 1 presented their paper on Importance Applications of Virtual Reality in Engineering sector In this paper Virtual reality is defined as an immerging technology that can provides capability to realize actual working environment Further approaches needed to realize virtual reality are covered presented Paper also explores importance and usage of virtual reality in engineering sector like design manufacturing inspection tooling assembly prototyping etc 

Moreover benefits costs limitations and risks associated while adopting VR are also discussed and highlighted Radharamanan et al 2 represented their paper on A survey of virtual reality technologies it s applications and limitations In this paper various technologies that are used for virtual reality are highlighted like Head Mounted Display HMD Caves Hand Gloves 3D Mouse Space ball Full body suits Video camera and sensor etc In addition technical aspects of virtual reality technologies are also covered At last advantages limitations of using virtual reality in present and for future are also summarized 3 NEED OF VIRTUAL REALITY Due to increasing advancement in technologies to fulfill growing need of customers Virtual reality is now a day s consider most immerging and efficient technologies which has not only overcome limitations of augmented reality but also made human life simpler and easier Some of the growing needs of virtual reality are as follows 1 Simulate the real world dynamically by use of computer software hardware and virtual world integration technologies 2

Can simulate physical presence in places in the real world as well as in imaginary worlds 3 Without feeling any real danger we can be part of the action on the virtual safe environment 4 Virtual reality can help us to visualize working environment where people cannot go especially mars or low temperature environment by making same atmospheric conditions by use of computer graphics software and use of headsets gloves etc make them feel same physical presence Fig 1 Use of virtual reality technology HMD for gaming purpose Fig 2 Need of virtual reality technology Oculus Rift CV1 for training 4 WORKING PRINCIPLE OF VIRTUAL REALITY The Virtual Reality system works on the following principle It tracks the physical movements in the real world then a rendering computer redraws the virtual world to reflects those movements The updated virtual world is sent to the output to the user in the real world In this case the output is sent back to a head mounted display Hence the user feels immersed in the virtual world as if they are in the virtual world itself as all they can see their rendered movements in virtual environment Fig 3 Virtual Reality hardware structure

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