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Augmented Reality Interview Questions
Augmented Reality (AR) is an interactive experience of a real-world environment where the objects that reside in the real world are enhanced by computer generated perceptual information, sometimes across multiple sensory modalities, including visual, auditory, haptic, somatosensory and olfactory. AR can be defined as a system that incorporates three basic features: a combination of real and virtual worlds, real-time interaction, and accurate 3D registration of virtual and real objects.

It is a growing trend among companies involved in mobile computing and business applications in particular.
Amid the rise of data collection and analysis, one of augmented reality’s primary goals is to highlight specific features of the physical world, increase understanding of those features, and derive smart and accessible insight that can be applied to real-world applications. Such big data can help inform companies' decision-making and gain insight into consumer spending habits, among others.
* Augmented reality (AR) involves overlaying visual, auditory, or other sensory information onto the world in order to enhance one's experience.

* Retailers and other companies can use augmented reality to promote products or services, launch novel marketing campaigns, and collect unique user data.

* Unlike virtual reality, which creates its own cyber environment, augmented reality adds to the existing world as it is.
Marker-based Augmented Reality :  Is used for marketing and retail purposes in someone’s home. An example would be an app that allows you to visualize objects virtually in your homes before you can actually buy it.
Marker-less Augmented Reality :  Uses the device’s own hardware. GPS, camera and accelerometer collect information for the AR software.
Location-based Augmented Reality :  Location-based AR ties digital content and the experience it creates to a specific place.
Superimposition Augmented Reality : Recognizes an object in the physical world and enhances it in some way to provide an alternate view.
Projection-based Augmented Reality : Is a little different than the other types of markerless augmented reality.
Outlining Augmented Reality : Recognizes boundaries and lines to help in situations when the human eye can’t.
Augmented Reality(AR) uses computer vision, mapping as well as depth tracking in order to show appropriate content to the user. This functionality allows cameras to collect, send, and process data to show digital content appropriate to what any user is looking at.
In Augmented reality, the user’s physical environment is enhanced with contextually relevant digital content in real-time. You can experience (AR) Augmented Reality with a smartphone or with special hardware.
Here are the important differences between Augmented Reality (AR) and Virtual Reality (VR) :

Augmented Reality(AR) Virtual Reality(VR)
The system augments the real-world scene Completely immersive virtual environment
In AR User always have a sense of presence in the real world In VR, visual senses are under control of the system
AR is 25% virtual and 75% real VR is 75% virtual and 25% real
This technology partially immerses the user into the action This technology fully immerses the user into the action
AR requires upwards of 100 Mbps bandwidth VR requires at least a 50 Mbps connection
No AR headset is needed. Some VR headset device is needed.
With AR, end-users are still in touch with the real world while interacting with virtual objects nearer to them. By using VR technology, VR user is isolated from the real world and immerses himself in a completely fictional world.
It is used to enhance both real and virtual worlds. It is used to enhance fictional reality for the gaming world.
Following are the benefits or advantages of Augmented Reality (AR) :

* The AR system is highly interactive in nature and operates simultaneously with real time environment.

* It reduces line between real world and virtual world.

* It enhances perceptions and interactions with the real world.

* Due to its use in medical industry, life of patients have become safer. It helps in efficient diagnosis of diseases and in early detection of them.

* It can be used by anyone as per applications.

* It can save money by testing critical situations in order to confirm their success without actually implementing in real time. Once it is proven, it can be implemented in real world.

* It can be used by military people without putting their life in danger by way of battle field simulation before the actual war. This will also help them in actual war to take critical decisions.

* It can be applied to part of training programs as it makes things memorable and eye catching.
Here are the cons/drawbacks of Augmented Reality :
* It is very expensive to implement and develop AR technology-based projects and to maintain it.

* Lack of privacy is a major drawback of AR.

* The low-performance level of AR devices is a major drawback that can arise during the testing phase.

* Augmented reality can cause mental health issues.

* Lack of security may affect the overall augmented reality principle.

* Extreme engagement with AR technology can lead to major healthcare issues such as eye problems and obesity etc.
The Augmented Reality(AR) market will be showcasing an upward projection by reaching an estimated growth of 72.7 billion dollars by 2024. All this is possible as companies or colleges are interested in making investments in applications supporting the notions of Augmented Reality which are still untapped. Are you curious to know a bit about the applications enriched with extended AR capabilities? Modern-day applications which are much more practical in presenting the digital world with its real meaning.    
1. Use of AR Glasses
2. AR in the Medical Field
3. AR in Your Mobiles
4. AR is Mixing Up Well with the Entertainment Industry
5. AR is Open for Travel ‘N’ Tourism  
6. AR in Classroom Education
7. AR for Public Safety
Augmented Reality(AR) Smart Glasses are another form of wearable transparent device. They vary in designs, sizes, and shapes but serve a common purpose – reality enhancement. From 2017 onwards, the market for AR Smart Glasses has depicted a compound annual growth rate of 13 percent as per the type Monocular or Binocular [according to the assessment report of MARKET Research Future]. The prime reason for such an increase in demand is that these glasses combine virtual information (like three-dimensional images, animations, videos, etcetera) with real-world scenes entering the view-fields of users of varying age groups. A few examples of smart glasses used to augment the reality of the 2021 era are Google Glass Enterprise Edition 2, Microsoft HoloLens 2, Oculus Quest 2, Raptor AR Headset, and Magic Leap One. Each of them overlay the digital information on real-world objects, thereby enabling the users to track their emails, texts, or access other important details of their rotation. Still, if the users feel that they need to adapt themselves to different working environments, then the designs can be changed robustly so that any AR Glass (you have selected) may project a fully-colored High-Quality Display right in front of your eyes without compromising on the quality of the animations, videos, or other visuals.
Augmented Reality(AR) is successful in offering numerous approaches which can handle complex medical situations of patients and classify the data of various types of surgery. With all this, the public can powerfully be aided with proper treatments which relax their minds and flush all the toxins out of their bodies. Such an example of AR in the medical field is medical imaging. In this, various types of diagnosis are performed by the surgeons, neurologists, or chemotherapists so that they may offer medical benefits to their patients by examining their body parts well. That body part could either be your brain, ear, heart, or lungs. You may wonder how such a diagnosis is made by medical professionals – they use AR applications for determining the end-to-end structure, margins, or shapes of the disease, like tumor or cancer. Later, those applications provide them with relevant insights after they delve into the bodies of their patients in an interactive three-dimensional augmented format. All this has potentially made intermediate surgeries or surgeries with low-survival rates not only safer but precise too. This is because a doctor or a chemotherapist can now view the patient’s insides for predicting the likelihood of a disease occurrence or to understand the condition of their patients accurately. Finally, those medical experts will be performing appropriate medical treatments in accordance with the data presented by AR applications in the form of graphs and images of the body parts of the admitted patients.
Augmented Reality(AR) has pushed the current limits of your mobiles to let you see in real what you wonder or have been wondering for ages!! Whether it is about measuring the height and width of a kitchen table or designing the environment as per your interest in real-world entities like a variety of furniture, all this has been made possible by mobile applications using Augmented Reality Technology. One of the famous AR-based mobile apps of 2021 is the Ruler App (5 Million Plus downloads). This is compatible with Android, iPads, and iPhones and can be used as an on-screen ruler tool for measuring the dimensions of real-time entities like sofas, pillows, tables, vases, and so on. The dimensions are measured in linear sizes, i.e. meter, millimeter, centimeter, inch, yard, and feet with no compromise on the accuracy of the surfaces recognized by your mobiles’ cameras. Apart from recognizing the dimensions, there are other mobile apps like DecorateAR, Dulux Visualizer, and Paint Tester which use augmented reality technology for generating home decoration ideas like placing the furniture, resizing the variety of household entities depending upon the context of your home’s environment. Through them, you will accurately estimate the materials required for decorating your homes so that the walls can beautifully be covered virtually and their high-resolution view can be generated flexibly within a couple of seconds.