Discussion
Opinions differ as to whether the location-based approach of Augmented Reality pioneered by Wikitude can be considered as “augmented reality”. There is also concern for the accuracy of the GPS, compass and motion sensors used to calculate the position of the virtual objects. Inaccuracies could accumulate to the point that they prevent delivering a feasible result. In practice, this technique proves to be much simpler to implement than ones using the marker-based approach. In a current listing of the Top 5 AR Apps from The Telegraph, three mobile applications use the location-based approach (Google Goggles used both approaches).
Read more about this topic: Wikitude
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