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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. 
The 2021 Entertainment industry believes the fact that AR is a substantial marketing opportunity as the entertainment brands can mix their branded content well with the characters the audience likes the most. Those characters may either be revolutionary, analytical, idealistic, or humorous and may be selected upon the level of interest shown by the audience in real-time. There are many entertainment apps using the model of Augmented Reality Technology, but the famous ones are Snapchat, Google Lens, and Augment. Each of the apps can curatively augment the entertainment with its eye-gazing filters, stickers, lenses, and user-friendly emoticons. All these options can actively represent the moments you share with your families and friends. Besides, the experts of the 2021 entertainment industry believe in incorporating the chronological storylines of these entertainment applications more augmenting the reality of entertainment much more frequently. Either they are traveling to places or attending some comedy shows, it is feasible for them to produce content and mix it well with their marketing campaigns anytime, anywhere. What they need to keep in mind while creating the content is object orientation in real-time. If the same isn’t given proper attention, then it will create a negative impact on their motto with which they are spreading awareness about products whose qualities are yet to be discovered by the accounts of premium users.
Travel ‘N’ Tourism is all about managing the customers or travelers who will be exploring every nook of their destination with the accommodations arranged by a travel agent or a tour operator. However, if the travel services aren’t offered to the customers on time, it may decelerate the revenue growth generated by travel companies by leaps and bounds. Keeping this in mind, various agencies and hotels are using AR-based travel apps for helping their customers explore their destinations without compromising on the quality of transportation and food venues with interactive dish menus mapping the eating choices of travelers well. A few travel apps used by the agencies and hotels that showcase Augmented Reality are World Around Me, Smartify, ViewRanger, AR City. Whether you are trying harder to locate transportation, gas stations, ATMs, temples, or excited about scanning the brochures of agencies/ travel companies offering accommodations at pocket-friendly rates, any of these apps will help you identify what you are actually looking for! Thanks to these Augmented Reality-based applications which contain all the necessary details about the routes, method of transportation you may be familiar with, and some hotel accommodations booked after you narrowed your choices down. Now, you need not leave your beds and feel tense while learning more about the local attractions coming amidst your destinations.
Augmented Reality is willing to engage with teachers and other educators like college professors so that students of all age groups can deeply absorb the learnings of the subjects included in their curriculum. The subjects are either related to science, mathematics, music, or psychology and their concepts are explained well at lesser expenses since the infrastructure isn’t demanded by AR Technology. Anytime and anywhere, without any additional equipment, students can learn a new language like German, Spanish, or French with Mondly (their AR language assistant). Or, if they want to explore volcanoes and terrains located at the geological nodes of planet Earth in a fun and engaging manner, Google Earth (an AR-based application) provides search capabilities to students for zooming, rotating, or tilting the three-dimensional views surrounding our planet. In addition, they can access a larger collection of imagery including aerial, street views, and satellite images. Such apps supporting Augmented Reality are compatible with various versions of Android and iOS so that teachers can smoothly impart knowledge and students can enrich their learning experience at lesser hustles. Thus, students (or kids too) won’t be stopping themselves from accessing such freedom while learning, thereby managing their time effectively and sharpening their skills through such advantageous Augmented digital platforms. 
Public Safety simply means protecting the public from calamities, crimes, and other unknown dangers which can harm the public potentially. Whether you are working for a customer service sector or engaged with some drug enforcement agency, safety is something on which you can’t compromise. The app creators of KOVA corp have understood this and, as a result, launched an AR-based application, Silent Partner, which immediately and securely captures photos or videos of unexpected events like disasters from your smartphones. Later, you (or the public safety officials or police officials) can transmit those videos or pictures which are geotagged and retrieved easily anywhere. Besides, this application has a speech analysis functionality through which the voice content can be conveyed to investigators to safeguard the public. Another AR application (iOnRoad Augmented Driving Lite App) is for drivers, which uses GPS, sensors, and native cameras on their smartphones for detecting vehicles, so that drivers can be warned before the vehicle collides. Also, if, in case, the driver misses the collision notification, then an audio-visual warning pops to guide the drivers to apply brakes or reduce the speed of the car so that they may reach the predefined spots safely and on time. Such apps act as a powerful aid to responsible citizens involved with driving companies or police departments because their minds won’t think much about those plans which aren’t appropriate from the safety perspective of the public.