Google has published a technical paper describing how they create synthetic depth-of-field using only a single camera. This technology is behind the "Portrait Mode" functionality on their Pixel 2 and Pixel 2 XL smartphones. User shiruken, in the Reddit Science subreddit, 14 Jun 2018
[R] Synthetic Depth-of-Field with a Single-Camera Mobile Phone (how Google's "portrait mode" works) User bobchennan, in the Machine Learning subreddit, 14 Jun 2018
Google just released a paper explaining how their "portrait mode" works User milad_nazari, in the computer vision: doing stuff with pixels subreddit, 14 Jun 2018
Google just released a paper explaining how their "portrait mode" works User barroncountry, in the Photography subreddit, 13 Jun 2018