Computer Vision and Unreal?

Hey everyone, I am exploring the possibility of using computer vision as a form of input into UE4. My knowledge of Computer Vision is admittedly shallow, but I am studying it to see what applications could be made. I know for example; that the automated cars that can drive themselves can do so in part because of computer vision. They are able to translate the 2D image information that they gather from a camera into data that they can use to navigate properly. I was thinking of possibly using a similar technique to render 3D information in UE4. However instead of using a camera, perhaps you can use some recorded video.

By all means I am just brainstorming ideas and speculating the possible uses that computer vision can offer. What do you guys think?