If you just want to look around and jump from place to place, then it's trivial and likely already works with Google cardboard. If you're talking about being ab

If you just want to look around and jump from place to place, then it's trivial and likely already works with Google cardboard. If you're talking about being able to move freely, it's a much more complex problem and you do need a 3D model. http://matterport.com/ http://matterport.com/ attempts to do that with a 3D camera, but their prettiest results still rely on discrete spherical panoramas.