AR (Augmented Reality) & Virtual Reality (VR) applications (apps) are based on computer simulation of real-life scenarios and environments. The simulation will bear an increased degree of resemblance with whatever has depicted from real-life, either graphically or sensorially. The definition of 'sensorially' is broader than 'graphically' because it means things perceptible to your senses I.e. graphics, touch, sound, voice, smell and so on. Usually, how much resemblance together with the original has to be many times higher and much more accurate in the case of VR in comparison to AR apps.
Take into account the videos of an 100-metre dash in the recent Olympic Games. The first commentary might be in English therefore, because it is, that video won't be very thank you for visiting french. Either changing the commentary to French or adding suitable French sub-titles can make it more enjoyable with a French audience. This, basically, is where AR finds its opportunity - augmenting the initial with more useful info - within our example, substituting French for English and thus, making the information more vital for the French-speaking. As another example, look at the video capture of the road accident. Two cars collide on a highway and one is badly damaged. Police officers might not be in a position to pin-point which of these two drivers was accountable for the accident by simply viewing the recording. If, however, the playback quality was pre-processed by an AR application that added mass, speed and direction info. from the cars for the video, then, the one responsible might be established with all-around, maybe, hundred-percent certainty.
VR (Virtual Reality), conversely, is pretty not the same as AR. In reality, the two only share another thing in common - internet based simulation. As stated before, the simulation provided by VR must be for these good quality that it must be indistinguishable from reality. Theoretically, that is impossible. Therefore, for practical purposes, VR only means a college degree of approximation, sufficient for any user to get a 'live' experience of the simulated environment. Moreover, VR is interactive and responds sensorially, in 'real-time', and simply as with real-life e.g. in a VR application, imagine you have a forest, getting ready to burn a pile of cut-down bushes and dry leaves. You douse the pile with gasoline. A fox is keenly watching you from a close place. You then throw a lighted match-stick onto the pile... the machine will respond immediately showing a strong, quickly spreading fire burning on the pile, its shape occasionally altered by the blowing wind... in addition to being in real-life... the fox (scared with the fire), must hightail it? - and yes it does! The machine may enable you to change the direction, speed and alteration from the speed from the the wind, angle of throw from the match-stick etc. and the system will respond with all the new results immediately! Thus, VR enables you to definitely try out real-life scenarios and acquire sufficiently accurate results just as though he/she were in the desired environment/ place, directly, but save your time, travel & resource costs etc.
VR applications consume awesome levels of computing power. Compared, AR applications are not in any way demanding on resources - AR applications run comfortably on mobiles, tablets, other hand-helds, laptops and desktops. Very probably, you are using several AR apps on your own Android/ iOS device, right now, without knowing it! (e.g. Wordlens, Wikitude World Browser etc.).
The reason behind the gap is always that VR apps first should correctly interpret whatever action the consumer performed then 'make out' the appropriate response how the real environment would return, filled with animated graphics, movements inside the right directions, sounds and so on and in addition, according to correct physics, math and any other sciences involved. Most of all, 'latency', or the response time through the application, must be sufficiently high. If not, an individual, who may have have understandably high expectations, is sure to get so completely put-off that he/she might burst by helping cover their a string of unprintable words on the effect "to hell with this dumb thing!'. 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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