Ortega Sutherland posted an update 4 months, 3 weeks ago
AR (Augmented Reality) & Virtual Reality (VR) applications (apps) are based on computer simulation of real-life scenarios and environments. The simulation will bear a high degree of resemblance with whatever is being depicted from real-life, either graphically or sensorially. The term ‘sensorially’ is broader than ‘graphically’ since it means things perceptible to our senses I.e. graphics, touch, sound, voice, smell and the like. Usually, just how much resemblance with the original needs to be many times higher and much more accurate regarding VR when compared to AR apps.
Look at the videos of an 100-metre dash from the recent Olympics. The initial commentary could be in English therefore, as it’s, that video will never be very welcome to french. Either changing the commentary to French or adding suitable French sub-titles could make it more fulfilling to some French audience. This, in simple terms, is the place AR finds its opportunity – augmenting the first with increased useful info – in our example, substituting French for English and thus, making the content more vital for the French-speaking. As the second example, think about the video capture of an road accident. Two cars collide on the highway and something is badly damaged. The police is probably not capable to pin-point which of the drivers was accountable for the accident by simply viewing the playback quality. If, however, the playback quality was pre-processed by an AR application that added mass, speed and direction info. from the cars towards the video, then, the one responsible may be established with near, maybe, hundred-percent certainty.
VR (Virtual Reality), on the other hand, is pretty completely different from AR. Actually, both only share a very important factor in keeping – internet based simulation. As mentioned above, the simulation supplied by VR must be of such top quality that it’s indistinguishable from reality. Theoretically, this really is impossible. Therefore, for practical purposes, VR only means a degree of approximation, sufficient for any user to obtain a ‘live’ experience of the simulated environment. Moreover, VR is interactive and responds sensorially, in ‘real-time’, and simply like real-life e.g. within a 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 from a nearby place. You then throw a lighted match-stick about the pile… the machine will respond immediately showing a strong, quickly spreading fire burning around the pile, its shape occasionally altered by the breeze… so when in real-life… the fox (scared from the fire), must try to escape? – and yes it does! The machine may permit you to alter the direction, speed and alteration in the speed with the the wind, angle of throw with the match-stick etc. and also the system will respond with the new results immediately! Thus, VR enables someone to experiment with real-life scenarios and obtain sufficiently accurate results just as though he/she were in the desired environment/ place, in person, but saving time, travel & resource costs etc.
VR applications consume awesome amounts of computing power. When compared, AR applications usually are not in any way demanding on resources – AR applications run comfortably on cell phones, tablets, other hand-helds, laptops and desktops. Very probably, you use a couple of AR apps on your own Android/ iOS device, at this time, lacking the knowledge of it! (e.g. Wordlens, Wikitude World Browser etc.).
The reason behind the difference is VR apps first have to correctly interpret whatever action the person performed then ‘make out’ the right response the real environment would return, full of animated graphics, movements in the right directions, sounds and the like and also, depending on correct physics, math and then for any other sciences involved. Most importantly, ‘latency’, or the response time through the application, must be sufficiently high. Or else, the user, who has have understandably high expectations, will certainly get so completely put-off that he/she might burst by helping cover their a string of unprintable words for the effect "to hell using this dumb thing!’. In order to avoid such failures, a computer (or network of computers) furnished with unusually powerful mobile processors, high-fidelity graphics software, precision motion trackers and advanced optics, is necessary. And that explains, why.
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