>>274535852
OH wait no, that is grass, just dead grass? The video quality is so low.

>>274535983
Not necessarily. Grass provides a lot of shadows and thus contrast. And wind doesn't really matter all that much, since the algorithm works off of (obviously) a statistical model, and there is sufficient FOV. The tracking quality likely is a little worse though, but it's not noticeable with the amount of movement the user is doing and being distracted by. It's slow movements and specifically looking for tracking inaccuracy that would let you know if the grass is actually causing any problems.