UNIT-1 Important Short Question and Anwers For AKTU Semester Exam || AR & VR

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 Q1. What is virtual Reality?

Ans.Virtual Reality (VR) is the use of computer technology to create a simulated environment.
Unlike traditional user interfaces, VR places the user inside an experience. Instead of viewing a screen in front of them, users are immersed and able to interact with 3D worlds. By simulating as many senses as possible, such as vision, hearing, touch, even smell, the computer is transformed into a gatekeeper to this artificial world.It implies a complete immersion experience that shuts out the physical world. Ex: Oculus Rift, HTC Vive.

Q2. What is Virtual Reality Technology?

Ans.Virtual Reality's most immediately-recognizable component is the head-mounted display(HMD). Human beings are visual creatures, and display technology is often the single biggest difference between immersive Virtual Reality systems and traditional user interfaces.

Q3. What are the types of Virtual Reality?

Ans.There are three main types of virtual reality technology:

  • The one uses a helmet, ear phones and a pair of special gloves or joy sticks controlled by a computer and assisted by special sound effects and graphic images.
  • The one makes use of the video cameras. These cameras track the image of the participant in an artificially created virtual world. The participant can even move the objects in this world using virtual technology.
  • The one that makes use of the three dimensional images. The screen used is shaped in a curve. This makes the images closer to the real world. (Nigel W. John, Joanna Lang (2001). Pub game, Temple run, subway surf, Discovery VR, Orbulu, Incell VR are some examples of Virtual reality based apps in market. Moreover Virtual reality is much more beneficial for the video game industry.

Q4. What is Real-Time?

Ans. Real time- It is the computer science term for hardware and software systems subject to a real constraint. Real time programs must guarantee response within specified time constraints often referred as 'deadlines'.

Q5.What is Real-Time Computer Graphics?

Ans.Real time Computer graphics-It is the sub-field of computer graphics focused on producing and analyzing images in real time. The term can refer to anything from rendering an application's graphical user interface (GUI) to real-time image analysis, but is most often used in reference to interactive 3D computer graphics, typically using a graphics processing unit (GPU).

Q6. What is Graphics processing Unit (GPU)?

Ans. The CPU (central processing unit) has been called the brains of a PC. The GPU (graphics processing unit) its soul. A graphics processing unit is a specialized electronic circuit designed to rapidly manipulate and alter memory to accelerate the creation of images in a frame buffer intended for output to a display device. GPUs are used in embedded systems, mobile phones, personal computers, and workstations.

Q7. Why do we need GPU?

Ans.The GPU, or graphics processing unit, is a part of the video rendering system of a computer. The typical function of a GPU is to assist with the rendering of 3D graphics and visual effects so that the CPU doesn't have to. ..Powerful GPUs are needed mostly for graphic intensive tasks such as gaming or video editing.

Q8.What does Virtual environment mean?

Ans. 1) A computer that is running in a virtual machine environment, which is the combination of virtual machine monitor and hardware platform. For example, VMware running on an x86 computer is a virtual environment. See virtual machine and virtualization.
2) See virtual reality and Second Life. 

 

Q9. What are the Limitations of Virtual Reality?

Ans. Limitations are-

  1.   It only creates imaginary world or an artificial world,but can't deal with the real world objects.
  2. Though having capabilities of being used for educational purposes, it devalues the importance of human connections and synergy in education.
  3. Virtual Reality is rigid and lacks flexibility.

We all Know that necessity is the mother of invention. That's why for overcoming all these cons os virtual reality,techno experts have introduced an update called Augmented Reality.

Q10. What is Augmented Reality?

Ans. Augmented Reality- Augmented reality is a technology enriching the real world with digital information and media. It adds graphics, sound, feedback, and smell to the natural world as it exists. It blurs the line between what's real and what's computer-generated by enhancing what we see, hear, and feel. It may be called as an add-on pack to the VR i.e. Virtual reality. In simple words, Virtual objects overlaid on real environment in augmented reality.

Q11. Write the advantages of Augmented Reality.

Ans. There are some advantages of augmented reality are:

  1. Increase Sales: Apps such as lens-kart are AR based app which enables the customer to check if the product justifies his/her need or not. Hence AR helps in increasing sales by increased customer interaction. A recent start-up called "StyledotMe" got the momentum in jewellery industry.
  2. Enriches Content: Unlike VR, AR is much more interactive with the real world which enriches the experience and content both at the same time.
  3. It can be used for training and skill development applications in various industries such as military, loco-pilot training, nuclear plant trainings etc. As it is having human interaction with virtual and real world as well.

Q12. What are the Limitations of Augmented Reality?

Ans. Limitations are:

  1. In some specific cases, it becomes too ambiguous to implement. As the number of layers increases, sometimes it looks not mixing of not fulfilling the exact environment needs and loses its user friendly charm.
  2. Content may obscure or narrow a user's interests or taste.
  3. Privacy control is a big challenge with AR. Well, there is a solution for every problem available in the world. And to these cons of augmented reality, that is Mixed Reality (MR).

Q13. What is Mixed Reality?

Ans. Mixed Reality:Mixed reality is the combination of what is best in VR and AR respectively.It's a blend of best features of Virtual reality and augmented reality. Mixed reality indicates videos where VR-content is integrated into a real time linear video. Mixed reality (MR) not just overlays but anchors virtual objects to real world objects and allows the user to interact with combined virtual/real objects.

Q14. Write some available AR and VR headsets in market today?

Ans. Available AR and VR headsets in the market today:

VR Headsets AR Headsets
Oculus Rift.Best Overall Microsoft HoloLens.
Pansonite 3D VR Glasses Magic Leap Light-wear.
Samsung Gear VR. Epson Moverio BT-300FPV Drone Edition.
Oculus Go. Google Glass Enterprise Edition
HTC Vive Vuzix Blade AR.
Lenovo Mirage Solo. Meta 2
Sony Play Station VR Optivent Ora-2
Google Daydream View Gramin Varia Vision

Q15. Write the difference between Virtual Reality and Augmented Reality?

Ans

Augmented Reality Virtual Reality
Augmented reality is a mix of the real world and the virtual world. Virtual reality creates an entire virtual world.
It lets people interact with both worlds and distinguish clearly between both. In this case, it is hard to differentiate between what is real and what is not real.
This is generally achieved by holding a smart phone in front of you. This is generally achieved by wearing a helmet or goggles.
AR adds to reality, projecting information on top of whaat you are already seeing. VR replaces reality, taking you somewhere else.
User's presence is required for the experience. the experience. User need not to be present for experiencing the imaginary world.

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