US 12,080,008 B2
Time-of-flight depth measurement using modulation frequency adjustment
Gal Bitan, Petach-Tikva (IL); Roy Yam, Ramat Gan (IL); and Gershi Koltun, Giva't Ada (IL)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed on May 24, 2023, as Appl. No. 18/322,803.
Application 18/322,803 is a continuation of application No. 17/109,439, filed on Dec. 2, 2020, granted, now 11,694,350.
Application 17/109,439 is a continuation of application No. 16/401,285, filed on May 2, 2019, granted, now 10,878,589, issued on Dec. 9, 2020.
Prior Publication US 2023/0298190 A1, Sep. 21, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. G06T 7/50 (2017.01); G01S 17/10 (2020.01); G01S 17/89 (2020.01); G06T 7/521 (2017.01); G06V 40/16 (2022.01); H04N 23/56 (2023.01)
CPC G06T 7/521 (2017.01) [G01S 17/10 (2013.01); G01S 17/89 (2013.01); G06V 40/161 (2022.01); H04N 23/56 (2023.01); G06T 2207/10028 (2013.01); G06T 2207/10048 (2013.01); G06T 2207/10152 (2013.01); G06T 2207/20104 (2013.01); G06T 2207/30201 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An apparatus comprising:
a touchscreen interface configured to select a region of interest (RoI) of a scene; and
at least one time-of-flight (ToF) camera,
wherein the at least one ToF camera comprises:
an illuminator configured to illuminate a scene with modulated light;
an image sensor configured to capture the modulated light reflected from surface points in the scene; and
an image signal processor configured to identify the RoI through the touchscreen interface in a second ToF measurement of the RoI, measure depths of the RoI by performing ToF operations using the modulated light and output depth information with a precision different from a first ToF measurement of the RoI.