Definition | Virtual Reality – VR – Virtual Reality

Definition | Virtual Reality - VR - Virtual Reality


Define virtual reality : virtual reality (in English, Virtual Reality or VR) is a technology that allows anyone to immerse themselves in a digitally created artificial world. Not to be confused with augmented reality (see our profile at Augmented reality and its applications).

It can be a real world clone or a file being Totally imaginary. The experience is visual, auditory, and in some cases my touch With the production of back effects. When a person is equipped with appropriate interfaces, such as gloves or clothing, they can then experience certain sensations related to touch or certain actions (blow, impact, etc.).

virtual reality headphones

This immersion is done by means of a virtual reality helmet that places a stereoscopic 3D display system on noseIn a confrontation eyes. Some models are equipped with sensors that reveal movements from the header to allow the user to look around. The images are then recalculated in real time to synchronize with the direction of gaze.

virtual reality rooms

There are also virtual reality rooms where images are displayed on wallsFloor and ceiling with motion capture system that is used to adjust perspective based on movements.

Virtual reality and its applications: video games, simulation, etc.

Virtual reality for the general public has been booming since 2015 with the arrival of more efficient and affordable headphones. The Google Play the democratization card by suggesting a cardboard model called Carboard which is used with a file smart phone as a display system.

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Several manufacturers including Samsung (Gear VR), HTC (HTC Vive), Sony (PlayStation VR), and skylight (oculus rift) released helmets with motion sensors mainly intended for video games and apps recreational. More expensive, they are connected to a computer or game console.

Virtual reality also has many other applications: training with simulators, therapy phobiaSurgical simulation, architecture, archeology with site reconstruction, virtual tours of museums, etc.

What is virtual reality?

The term virtual reality includes a series of computer technologies that aim to immerse one or more people in a virtual environment created by software. An environment that more or less reproduces a real environment.

The user accesses the default group through a virtual reality headset. In order for the immersion to be total, virtual reality does not only use the display of the environment recreated by the program.

Other senses such asSmell (Definition of smells), hearing (episode sounds) and touch can be stimulated.

Virtual reality is sometimes referred to as VR (virtual reality), computer-simulated reality, or immersive multimedia. It is sometimes mistakenly confused with augmented reality, which is based on a real environment with the addition of virtual elements (hence the term augmented reality, which somehow corresponds to an improvement in reality).

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What is the use of virtual reality?

Definition | Virtual Reality - VR - Virtual Reality

For the general public, virtual reality is often associated with video games. You adjust your helmet, putting yourself in the shoes of a soldier who must overcome obstacles and kill as many enemies as possible. Some 3D music videos and movies are also based on VR. But PC-simulated reality extremes aren’t just fun.

In the military field, this advanced technology is used, for example, for training aircraft pilots and paratroopers.

In the field of health, surgeons assist before intervention and help treat some patients with uncontrollable fear such asagoraphobia (fear of crowds), andarachnophobia (Fear of spiders) or thephobia of heights (The fear of heights). Commercial applications are also increasing.

Some transport companies and insurance companies use virtual reality for advertising purposes to convince the customer inside their vehicles or to make them aware of the real risks such as accidents out of the way. Virtual reality also has its place in education, particularly in the context of virtual video conferencing, and in architecture for visiting buildings before they are Construction.

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How does virtual reality work?

A virtual reality headset does the tricky job of sending you into a virtual environment by making you believe that the scenes that happen there are actually real. How does this supplement exert its power of persuasion? Largely thanks to its stereoscopic screen.

Your eyes see the same images, but not at the same angle in order to get the effect of depth. The the view It also contributes to depth. This technique consists of moving certain objects more slowly to highlight the distance between them and the user.

The realism Movements are obtained by several sensors: gyroscope For angles, accelerometer for 3D motions, magnetometer To discover the position of the helmet. These sensors are grouped together under the name “head-traking”. On the audio side, immersion is ensured by spatial sound which produces noise from different angles depending on the user’s position.

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