  We demonstrate that deep learning methods can determine the best focus
position from 1-2 image samples, enabling 5-10x faster focus than traditional
search-based methods. In contrast with phase detection methods, deep autofocus
does not require specialized hardware. In further constrast with conventional
methods, which assume a static "best focus," AI methods can generate
scene-based focus trajectories that optimize synthesized image quality for
dynamic and three dimensional scenes.
