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Know VR and AR- Learn the difference between virtual reality and augmented reality VR, AR- Future Technology

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Know VR and AR: Do You Know What is VR and AR? or What is the difference between VR and AR? Here we will discuss about VR and AR. It is a computer-made world, so that a person can interact with it simultaneously, in the same way that he interacts with the real world, and the third dimension or anthropomorphism plays a major role in virtual reality technology ( VR Technology) where the outputs are referred to models similar to reality and make the person dealing with them integrate completely as if he is immersed in an environment The reality itself. In this technique, the human senses are involved in order to have an experience that is very similar to reality, but it is not real.

A brief history of virtual reality

The American thinker Arthur Clark is one of the first to dream of virtual reality and issued a book about science fiction called Reality and the Stars. In his presentation of the book half a century ago, he imagined the existence of a future city whose members communicate with each other through meetings and conferences by means of advanced electronic devices, consulting and discussing Many important issues are transmitted through these electronic devices that do not require their presence to those sites despite their long distances.

First Introduce Virtual Reality VR

The term Virtual Reality was first introduced in 1989, and many other terms were used to refer to this concept, including: Artificial Reality in the 1970s, Cyberspace in 1984, and recently Virtual Worlds and Virtual Environments in the 1990s.

The importance of virtual reality-VR:

The importance of virtual reality lies in the fact that it is like the real reality as it is. It is considered an effective way to simulate reality, regardless of its circumstances and difficulties.

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Know VR and ARFuture Technology

Through it, different environments can be created that tell the reality that the individual cannot access or coexist with, for example. The space environment cannot be lived by the educated individual in the school environment, and here comes the role of virtual reality in creating an environment similar to the space environment and enabling the individual to interact with it as if he were in the real environment.

Types of virtual reality VR:

There are three types of virtual reality, or three (worlds) that this reality creates, and they are:

  • Virtual reality creates a state of complete presence:

In it, the user is deluded that the computer does not exist and the real world does not exist, so he does not see or feel anything but this manufactured world, which the computer creates, and he acts – within it – completely freely.

Embodying virtual reality

This created world is (seeing) by means of a special helmet, or electronic glasses connected to a computer; The user also wears, in his hands, electronic gloves, as an additional means of embodying virtual reality, allowing him to touch objects that he (think) are present.

Virtual Reality Limited Function and Location:

This system is used in simulators, and the designer’s interest, in this type, is focused on simulating certain properties or molecules in real (real) reality, such as the effect of gravity, or extreme speed, with less attention to detail.

Peripheral virtual reality:

Here, the vision of the virtual world is, and it is dealt with, through the computer screen, without feeling the real presence inside the manufactured world.

Know VR and AR- Learn the difference between virtual reality and augmented reality VR, AR- Future Technology- deeanatech
Know VR and AR-

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There are those who herald a fourth type of virtual reality, which has not yet existed, but it is widely used in the ideas of science fiction literature, in which addressing the senses is bypassed to addressing the mind directly.

Meaning that if the mind receives from our different senses its sense of the world, through electrical signals, and it is The process of perception is the responsibility of the mind, which translates these signals into elements that we have experience with.. If this is the case, it is possible to suggest the existence of any influence by generating the same electrical signal that this influence was generating.

What is VR?

Virtual reality tools and devices :

A) Head-wearing devices (HMD):

It is similar to a mask or a helmet and is equipped from the inside with one or two small screens to display mono scenes or hear effective sounds (stereo). The individual can see what the program displays through the mask or helmet, and he can also see objects in their three dimensions, or it may be a full head covering as He can see and hear at the same time.

b) Tactile gloves:

They are sensors that cover the whole hand and generate an active interaction between the user and the virtual environment of the application to sense touch and feel the temperature for example, and it also has the ability to create a sense of the real environmental conditions.

c) Motion Sensing:

This technique depends mainly on a special suit worn by the actor, on which white dots are placed at the articular sites (such as the wrist, elbows, ankle, knees), and these points are also placed on his head and face, and a pair of video units follow the movements of these points (where each point is defined through a special computer program), and linking it to similar points on a virtual character that is configured in the computer, and through powerful computer processors and complex programs,

The virtual character is animated with very realistic movements using different clips recorded from the movement of the real actor, and this process is known as Performance Animation In some applications, the movement of the actor’s head, face, eyes, and mouth is simulated by a virtual speaking character.

The performance animation aims to achieve rapid and accurate character building in the virtual world, and this method has been used recently in the production of many films such as: Trial or. NS. Simpson which contained a “performative animation” of what supposedly happened at the scene of the crime.

d) Omnidirectional BOOM

The omnidirectional endoscope BOOM developed by Fakespace is a screens and optical system combined with a box connected to a multi-connection arm, and when the user looks through the holes in the box, he sees the virtual world, and he can direct the box in any direction allowed by the processing capacity in the tool, and the head tracking process is done through Sensors in the connections of the arm that holds the box.

Cave robotic virtual environment CAVE

Cave robotic virtual environment CAVE
Cave robotic virtual environment CAVE

The Cave Automatic Virtual Environment was developed at the University of Illinois in Chicago, USA, and it gives the illusion of immersion by displaying stereoscopic images on the walls and floor of a cube the size of a room, and a number of people wearing holographic glasses can enter and roam freely inside the cave, A head-tracking system continuously adjusts the stereoscopic display to the position of the advanced viewer2.

f) Assistive devices:

A variety of assistive devices in virtual reality, for example: the joystick, mouse and keyboard.

In general, the input devices for virtual reality programs are in constant development, as some auxiliary devices have recently appeared in the market, such as the comment ball, the three-dimensional joystick, the navigation stick, the head of the heel, and so on, all of which are auxiliary devices for virtual reality applications.

E) computer system:

There is no doubt that virtual reality mainly depends on the computer, but

To reach a complete sense of the reality of virtual reality, a computer system with high specifications is required. Geometric shapes are generated in a distinctive way that shows data and information in an artistic and wonderful way similar to virtual reality.

g) The nano-manipulator or the nano-processor:

The nanomanipulator includes a pointing machine that looks like a driving stick, and this machine is connected to a personal computer equipped with a highly advanced graphic card, which converts the microscope data to display.

it in the form of a three-dimensional image of multiple colors, and this precise sensor enables scientists to touch and feel the features of the small things they are studying Scientists have felt the small edges and gaps in the protein molecules, and the viscosity of some types of pathogenic bacteria.

The most advanced version of the nanomanipulator is in the physics department at the University of North Carolina at Chapel Hill.

Given the extreme importance of this device in the research of many researchers in other institutions, computer science researchers at the University of North Carolina conducted a study to make this device accessible to everyone

And Kevin Jivay, a professor of computer science, tried to use the techniques of the second generation of the Internet, whose success in exploiting them would allow researchers to send samples and be examined remotely using the Internet. 

This researcher has already done a practical experiment in which a sample was examined at a university in Washington, DC, 270 miles from the place of examination at the University of North Carolina, but this experiment was marred by some problems.

h) Virtual worlds: the world of Second Life, for example:

Virtual worlds_ the world of Second Life, for example_
Virtual worlds_ the world of Second Life,

The Internet is also a virtual reality tool, and in many ways, one of these ways is the virtual world, and the second life is an example of the virtual world.

The second life is a virtual game, you need a fast internet connection and a computer with high specifications to be able to run it, its idea revolves around making a virtual character for you and then you enter a virtual world similar to the one we live in.

you can roam there freely, and build many friendships, you can chat through Text, audio and even video, you can buy your own house, or start a business there, with this world’s currency called Lidden

Some players spend between 4 to 10 hours a day on the game, and some of them feel so immersed in the game that some of the facilities and scenes that you see in the game may see their counterparts on the ground.

Uses of virtual reality in education

Computer simulations have been used for educational purposes for many years – even before the advent of microcomputers, then in the late seventies and eighties this type of simulation became common in classrooms and computer laboratories in Western countries.

Create an ecosystem

And it ranged in complexity from simple simulations to playing with a coin in order to learn binary distribution Possibilities (for example), to create an ecosystem in the form of a lake in which various animal organisms interact, and these types of simulations were presented in text or digital form, but with the development of devices and the development of their capabilities, software evolved to enable the provision of pictorial outputs Graphical Output.

If we assume that screen-based 3D drawing is a form of virtual reality, it can be said that virtual reality has been used for some time in education, and one example can be seen in the work of Veronica Pantelidis and Lawrence Auld, co-directors of the Virtual Reality and Education Laboratory (VREL). ),

At East Carolina University, in which a software package called Virtus VR is used by elementary school children to configure the interior of a room or building, including designing walls, doors, windows, and furniture, and then placing them in the appropriate place in a Screen-Based Construction.

This activity improves children’s ability to imagine three-dimensional space and space, providing fun, and giving meaning to children’s achievement as they learn.

Another example of the current use of virtual reality in education is the Jason Project in which school children can experience both ‘Telepresence’ and ‘Teleoperation’ This program, which was supervised by the US space agency NASA,

Which began in 1989, was designed to create excitement and motivation for children to study science, mathematics, and technology, by allowing children to control by being in the distance the remote operations of a vehicle. Underwater (TROV) explore the depths of the ocean, while they watch real-time results on large video screens.

Number of uses for virtual reality

There is also an increase in the number of uses for virtual reality in higher education as well.

An example of this is the Learning Sites Project, through which a team of archaeologists, experts in virtual reality, and 3D models work on building graphics, audio and databases, enabling Users can explore a number of archaeological sites (in Turkey and Egypt, for example), and allow interaction with virtual copies of the created sites by accurately translating the data recorded on the real sites, and deciding how this interaction,

For example; If a user is interested in a dark corner of the site in the virtual environment, he can focus on that area and explore it in more detail.

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