4 technical concerns that must be overcome in augmented reality

In order for augmented reality to be successful, there are 4 main technical concerns we must consider in computer vision terms.
Here is a list:

1. Projection
2. Rendering
3. Location
4. Recognition

Here is some more information about those topics above.

In order to increase the array of virtual objects and real objects, we need good (fast) performance in recognition while the augmented really application is operating.

Here is an application which is using face recognition technology.