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BASIC PRINCIPLE AND APPLICATION OF VIRTUAL REALITY

Virtual Reality is the computer-generated simulation of a three-dimensional image or atmosphere which interacts  with in a seemingly real or physical approach by particular person operating with a special electronics equipment, like a helmet with a screen within or gloves fitted with sensors.


Principle:
Virtual reality consists of code and hardware technologies that act with the user to immerse him/her in a virtual environment. The principle is to form a relationship between the user and virtual atmosphere. For that, code technologies (computer graphics, period of time computing) in addition as hardware technologies (human—computer interfaces) are needed. The effects of interaction between the avatar and the virtual atmosphere are restituted to the user senses through sensory feedback technologies. This interaction loop needs to be performed within the delay of the refresh rate of the excited human sense.Then, virtual objects are perceived through technologies functioning on human senses. These technologies are recognised of visual image devices, sound feedback, tactile and force feedback, in addition as motion platform.A period of time interaction between the user and therefore the virtual atmosphere needs to capture motion or intention of the user in real time so as to refresh the avatar position and motion within the virtual atmosphere in line with the user’s position and motion. Inthat way, a coherence between physical world and virtual world is completed in period of time.


Applications:
Applications of Virtual Reality will be found in fields as various as recreation, marketing, education, medicine, construction and road safety coaching and lots of others. they supply various potentialities for users to explore virtual realities for various functions

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