US 11,722,791 B2
Ranging device, image processing device and method
Masako Kashiwagi, Kawasaki (JP); Nao Mishima, Inagi (JP); and Akihito Seki, Yokohama (JP)
Assigned to KABUSHIKI KAISHA TOSHIBA, Tokyo (JP)
Filed by KABUSHIKI KAISHA TOSHIBA, Tokyo (JP)
Filed on Sep. 1, 2022, as Appl. No. 17/900,918.
Claims priority of application No. 2021-175694 (JP), filed on Oct. 27, 2021.
Prior Publication US 2023/0126635 A1, Apr. 27, 2023
Int. Cl. H04N 23/959 (2023.01); H04N 23/67 (2023.01)
CPC H04N 23/959 (2023.01) [H04N 23/671 (2023.01)] 10 Claims
OG exemplary drawing
 
1. A ranging device comprising a capture unit, the ranging device comprising:
storage configured to store a statistical model generated by learning a bokeh that occurs in a first image affected by aberration of an optical system of the capture unit and that changes nonlinearly according to a distance to a subject in the first image;
a processor configured to:
acquire a second image captured by the capture unit and affected by aberration of the optical system of the capture unit;
acquire focus position information relating to a focus position when the second image was captured;
acquire a bokeh value indicating a bokeh of a subject in the second image, which is output from the statistical model by inputting the acquired second image to the statistical model; and
convert the acquired bokeh value into a distance to the subject based on the acquired focus position information.