AR (Augmented Reality) & Virtual Reality (VR) applications (apps) are generally based on computer simulation of real-life scenarios and environments. The simulation will bear a top amount of resemblance with whatever is being depicted from real-life, either graphically or sensorially. The phrase 'sensorially' is broader than 'graphically' since it means things perceptible to senses I.e. graphics, touch, sound, voice, smell and the like. Usually, just how much resemblance with all the original must be often times higher and much more accurate when it comes to VR than in AR apps.

Look at the videos of an 100-metre dash from the recent Olympics. The main commentary could possibly be in English therefore, because it is, that video are not very welcome to the French. Either changing the commentary to French or adding suitable French sub-titles is likely to make it more fun to a French audience. This, in essence, is the place AR finds its opportunity - augmenting the first with more useful info - in your example, substituting French for English and as a consequence, making the content more vital towards the French-speaking. As the second example, think about the video capture of the road accident. Two cars collide over a highway then one is badly damaged. The police might not be able to pin-point which of the drivers was responsible for the accident just by viewing the playback quality. If, however, the recording was pre-processed by an AR application that added mass, speed and direction info. from the cars to the video, then, the one responsible could possibly be established with near, maybe, hundred-percent certainty.



VR (Virtual Reality), on the other hand, is fairly different from AR. In reality, both only share a very important factor in keeping - computer based simulation. As pointed out above, the simulation furnished by VR should be of which high quality that it's indistinguishable from reality. Theoretically, that is impossible. Therefore, for practical purposes, VR only means a diploma of approximation, sufficient for the user to secure a 'live' experience with the simulated environment. Moreover, VR is interactive and responds sensorially, in 'real-time', and simply such as real-life e.g. in the VR application, imagine you are in a forest, about to burn a pile of cut-down bushes and dry leaves. You douse the pile with gasoline. A fox is keenly watching you against an area place. Then you throw a lighted match-stick about the pile... the machine will respond immediately showing a solid, quickly spreading fire burning on the pile, its shape occasionally altered through the the wind... so that as in real-life... the fox (scared with the fire), must hightail it? - and it does! It may allow you to customize the direction, speed and alteration from the speed of the blowing wind, angle of throw with the match-stick etc. and also the system will respond using the new results immediately! Thus, VR enables one to test out real-life scenarios and acquire sufficiently accurate results equally as though he/she were from the desired environment/ place, in person, but save your time, travel & resource costs etc.

VR applications consume awesome amounts of computing power. When compared, AR applications are not whatsoever demanding on resources - AR applications run comfortably on cell phones, tablets, other hand-helds, laptops and desktops. Very probably, you're using several AR apps on your Android/ iOS device, today, without knowing it! (e.g. Wordlens, Wikitude World Browser etc.).

The explanation for the difference is always that VR apps first should correctly interpret whatever action the user performed then 'make out' the proper response how the real environment would return, complete with animated graphics, movements from the right directions, sounds etc and in addition, depending on correct physics, math and any other sciences involved. Most significantly, 'latency', or the response time from your application, must be sufficiently high. Otherwise, an individual, who's have understandably high expectations, will certainly get so completely put-off that he/she might burst out with a string of unprintable words for the effect "to hell with this dumb thing!'. To avoid such failures, a computer (or network of computers) equipped with unusually powerful mobile processors, high-fidelity graphics software, precision motion trackers and advanced optics, is essential. Knowning that explains, why.

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