> 6. Depth estimation At least indoors, this was already handled pretty well 10 years ago by Kinect, and there are many somewhat robust approaches based on bin

> 6. Depth estimation At least indoors, this was already handled pretty well 10 years ago by Kinect, and there are many somewhat robust approaches based on binocular vision. Not sure if this qualifies as "very much an open problem". > 9. Scene understanding The mentioned example is not the best one - anticipation of collisions has been a feature in cars for many years now (usually some warning system, sometimes with automatic emergency breaking). But it's a very constrained problem; more generic scene understanding is of course still very difficult.