US 11,722,630 B2
Varied depth determination using stereo vision and phase detection auto focus (PDAF)
Sagi Katz, Yokneam Ilit (IL); Daniel Wagner, Vienna (AT); and Weston Welge, Boulder, CO (US)
Assigned to Snap Inc., Santa Monica, CA (US)
Filed by Snap Inc., Santa Monica, CA (US)
Filed on May 17, 2022, as Appl. No. 17/746,292.
Claims priority of provisional application 63/190,126, filed on May 18, 2021.
Prior Publication US 2022/0377209 A1, Nov. 24, 2022
Int. Cl. H04N 5/222 (2006.01); H04N 23/45 (2023.01); H04N 23/67 (2023.01)
CPC H04N 5/2226 (2013.01) [H04N 23/45 (2023.01); H04N 23/672 (2023.01)] 20 Claims
OG exemplary drawing
 
1. A method comprising:
detecting a first feature in a pair of corresponding images of a scene captured by a first optical sensor and a second optical sensor;
determining a phase detection autofocus (PDAF) depth value of the first feature based on at least one image from the pair of corresponding images;
comparing the PDAF depth value to a first threshold value; and
in response to determining that the PDAF depth value exceeds the first threshold value, determining a stereo vision depth value of the first feature based on the pair of corresponding images;
calculating a confidence score of the stereo vision depth value based on the pair of corresponding images;
performing a comparison of the confidence score of the stereo vision depth model to a second threshold value; and
providing an output value based on the comparison of the confidence score of the stereo vision depth model with the second threshold value.