   augmented reality how to's
  I want to find some information or tutorials on implementing some augmented reality concepts.  like for instance how to take the black and white marker boxes and convert the image to something useful.i found some nice videos but no real info on how to implement it c/c++. thanks ahead of time if you can point me in its direction.   
  Either use existing frameworks, or look at "(Introduction to) computer vision" type curriculum.Also, many of the recently popular examples work because they are limited to an incredibly controlled set of inputs, often used in very controlled environments.Robust AR however is difficult, or at very least, takes up considerable computational power.   