Sunday, May 31, 2020

What Is Virtual Reality?

What exactly is Virtual Reality?

What Is Virtual Reality?


Virtual Reality is a computer system which create an imaginary world. People thinks that he is in that world and realizes the ability to manipulate objects in that world and navigate through it.

Virtual reality is used for applications related to 3D environments, high visual multimedia etc. Virtual Reality makes you feel like that you are in a computer-generated world.

What are the examples of virtual reality?

We play car race games on computer and we feel that we are actually driving the car, But actually it does not happen.

To understand virtual reality, When we are watching a movie in a movie theater. So the incident is happening in front of us. Seeing him, we feel that whatever is happening in front of him is actually happening, while the incident is imaginary. In this way, we can define virtual reality briefly like this. That virtual reality is a concept that makes us actually feel or feel about an event, but it does not actually happen. That whatever is happening. It is actually being implemented.

History of Virtual Reality: -


The term Virtual Reality was coined by Geran Lallier in the year 1987, whose research and engineering has contributed to many products in the new development industry. Virtual Reality was considered around 1965 when Ivan Sutherland presented his suggestions for the creation of a virtual or imaginary world. 1969 It created the first system that constrained people to a three-dimensional display of information, the United States made the main use of the concept of virtual reality in the mid-1970s and 1980s.

By 1970 Sutherland also used scientific visualization in computer graphics to convert columns of data into photographs. The objective of scientific visualization was to capture the dynamic features of systems or processes in their photographs. In 1980 Scientific Visualization went on to create many of Hollywood's special effects methods and Borrowing Animation. The 1990 NCSA Award Winning Smog Animation Descend on Los Angeles influenced the Antipollution Legislature in the state. Scientists wanted interactivity and There was a need for mutual ties of military industry, business and entertainment. The demand for interactivity shifted computer visualization to virtual reality.

What are the main types of Virtual Reality? 

There are three main types of Virtual Reality technology based on this virtual experience :-

1. Fully Immersive VR :-

   It is a high technology to provide a real experience of the virtual world. In which HMDs (Head-Mounted Display) and Motion Detecting Devices attempt to give real senses of truth to the human world. This VR technology gives an idea of ​​the actual user experience.

2. Semi-Immersive VR :-

  In this virtual day, a person is partially able to experience the virtual world realistically. You can consider it similar to video games technology. High Performance Graphical Computer Systems and large screen projectors or televisions are used to create this virtual reality.

3. Non-Immersive VR :-

This is the technique of making the least visible experience of virtual reality. The idea of ​​which is made available to the person through a High Resolution Monitor. It feels like watching a 3D painting.

In addition to the aforementioned virtual world, Web-based Virtual Reality is also in vogue today. Which is prepared by VRML (Virtual Reality Markup Language). This technique can be made available to low cost, short time to more people.

E-commerce sites, social media platforms are using web-based virtual worlds. Which you must have experienced while watching the product.

Tools Used to Experience Virtual Reality :-

Virtual reality is a computer-created virtual world that is experienced with the help of these special tools, our brain is able to perceive the virtual world as real.

1. Datagloves (Input Devices) :-

These are called input devices. With their help, the necessary data and help in providing real experience to the user.
Dataglove equipment is worn in hand. Which is equipped with sensors. As soon as the user places a finger on or touches an object, the input is produced based on the given pressure according to which the virtual environment is favorable. This device uses fiber-optic cable.
Apart from datagloves, joysticks, trackballs, trackpads, bodysuits, etc. are also used.


2. HMDs (Head-Mounted Displays) :-

       This device is like a motorbike helmet. Which consists of stereo speakers with two small screens. And there is complete arrangement to prevent the external light from coming in. Both screens make 3D images which are able to change their shape and size according to the movement of the user.
HMDs have built-in accelerometers or position sensors. Those who catch the movement of the head and help the virtual environment to adapt accordingly.

3. Immersive Rooms :-

   In addition to HMD, a virtual room is prepared. The walls of which are partial-transparent, which are 3D graphics project from the backyard. Here the user does not need to wear a helmet like HMD. But one has to wear 3D glasses. This technique is used in Flight Simulation.

In addition to these devices, virtual reality devices based on Virtual Reality Technology also change. Whose job is to take input and output and process the received data.

What are the benefits of virtual reality? 

   Virtual Reality can be used extensively in the following areas.

1. Use of VR Technology in the medical field :-

      Operation, Practical training in cerebral and complex surgeries such as teaching fatal and expensive medical tasks, Performing a virtual operation (the doctor remains in place and a robot is sent to perform the operation which the doctor handles), Research is on to use it on mental disorder as well.

2. Use of VR Technology in Education :-

             This technique can be used to teach difficult, complex and risky disciplines in the field of education. An example of this exists in the form of Flight Simulation. Understanding the complex structure of human body
Training in mountain climbing, flying with an airplane, flying with a parachute, learning swimming, training in driving, there is a huge potential for VR technology in risk activities.

3. Use of VR Technology in Military Sector :-

    With this technology both human and financial savings are possible in service and defense operations. Conduct troops at virtual battlefields rather than actual maneuvers. Providing actual driving of vehicle
To prepare training ground for weapons and targeting.

4. Use of VR Technology in the field of Entertainment :-

    Entertainment is an area where the first reception of new technology is very enthusiastically accepted. Most use of VR technology is also used in entertainment industry. Examples are 3D movies, games etc.

5. Use of VR technology to create art and industrial design :-

            Artists are using this technique to create their artwork and engineers are making clients feel real by creating a real model of the buildings.
Similarly, in the industry too, this technology has started to be used due to low cost in preparing the actual model of cars, bikes and other vehicles. Other industries have also started this pattern in preparing the prototypes of their products.

What are the side effects of virtual reality?

     VR technology has to prove itself. Because it is new technology so, promotion of this technology is also limited. However, it has been used for a long time. Therefore, many challenges have been raised with their faces. Whose solution is left to be found.

VR Technology's biggest challenge is health. Various researches and studies have shown that people have had some health problems. Such as head pain, neck pain, tension, eye irritation, dryness, and sometimes even messing with the real world, people have confessed things.

Questions :-

What exactly is virtual reality?
What is the purpose of virtual reality?
What is difference between VR and AR?
What are the two main types of virtual reality?
What is virtual reality in simple words?
How does virtual reality work?
What are examples of virtual reality in everyday life?
What are the examples of virtual reality?

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