Background AR immersion

[erwang01]

the background currently breaks the AR illusion a bit. We should try to create a background that can more easily fit into someone's room. Also the background file may benefit from polygon reduction.

Here are the brainstormed ideas so far:

• Low Poly Background option
• Clear ground background (or reduced grass)
• Tall elements (life size)
• Short elements (reduced size so we can see over things.)