VR Virtual Reality Technology

Virtual reality (VR) is an artificial world that does not exist in nature, into which a person can completely

"immerse himself" not only as an observer but also as a participant.

Virtual reality systems are technical devices and software that creates for a person the

illusion of presence in this artificial world and in some cases allow manipulating his objects.

Most all virtual reality systems have (or should have) the following main characteristics:

• Real-time simulation.

The virtual reality system should provide the user with a picture, sound, 

as well as a complex of tactile and other sensations (if any) in response to the actions performed, instantly, without noticeable delays.

• Realistic imitation of the user's environment.

To fully immerse the user in the world of virtual reality, the system must

display virtual objects with a high degree of realism, so that they look "like living".

• Support for one or more users.

Virtual reality systems are distinguished by the number of simultaneously working users and are divided into individual and collective.

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Commonly, singular frameworks depend on plain view gadgets that must be worked by one individual (protective caps, goggles, and so forth).

Collaborative systems are created based on display facilities available to several users at once.

An example of a stereoscopic video projector that forms a three-dimensional image on a large one.

• The VR system should provide a stereoscopic image that provides a sense of depth in space.

A person has binocular vision, that is, he perceives the world with both eyes at once.

At the same time, the images observed by each eye are slightly different from each other and individually

do not have three-dimensionality, but our brain adds two pictures into a single three-dimensional image.

Modern technologies for generating pseudo-volumetric images are based on this effect, and so-called stereoscopic pairs of images have been created that provide the illusion of volume.

• Interactivity - The skill to communicate with a 3D world. In the "virtual universe," the user must be an extremely active observer.

He must be able to interact with the virtual environment, and it, in turn, will rely on the user's actions.

This will allow the user to look around and move in any direction within the virtual environment.

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