US 11,856,302 B2
Systems and methods for digital imaging using computational pixel imagers with multiple in-pixel counters
Michael W. Kelly, North Reading, MA (US); Curtis Colonero, Shrewsbury, MA (US); Christopher David, Chelmsford, MA (US); Joseph Bari, Concord, MA (US); and William Ross, Westford, MA (US)
Assigned to Anduril Industries, Inc., Costa Mesa, CA (US)
Filed by Anduril Industries, Inc., Costa Mesa, CA (US)
Filed on Dec. 19, 2022, as Appl. No. 18/083,783.
Application 18/083,783 is a continuation of application No. 17/425,767, granted, now 11,785,347, previously published as PCT/US2020/016601, filed on Feb. 4, 2020.
Claims priority of provisional application 62/807,683, filed on Feb. 19, 2019.
Claims priority of provisional application 62/800,685, filed on Feb. 4, 2019.
Prior Publication US 2023/0121928 A1, Apr. 20, 2023
Int. Cl. H04N 23/741 (2023.01); G06T 7/194 (2017.01); G06T 3/40 (2006.01); G06T 7/60 (2017.01); H04N 23/11 (2023.01); H04N 23/51 (2023.01); H04N 23/56 (2023.01); H04N 23/71 (2023.01); H04N 23/74 (2023.01); H04N 23/957 (2023.01); H04N 25/75 (2023.01); H04N 25/767 (2023.01); H04N 25/772 (2023.01); H01L 27/146 (2006.01)
CPC H04N 23/741 (2023.01) [G06T 3/40 (2013.01); G06T 7/194 (2017.01); G06T 7/60 (2013.01); H04N 23/11 (2023.01); H04N 23/51 (2023.01); H04N 23/56 (2023.01); H04N 23/71 (2023.01); H04N 23/74 (2023.01); H04N 23/957 (2023.01); H04N 25/75 (2023.01); H04N 25/767 (2023.01); H04N 25/772 (2023.01); H01L 27/14681 (2013.01)] 15 Claims
OG exemplary drawing
 
1. An imaging system, comprising:
a camera configured to capture images of an environment, the camera including a computational pixel imager (CPI) having a plurality of pixels, each of the pixels including:
a first counter configured to count up and down at a frequency F1 of a first modulated light source in the environment, such that a periodicity of an up-down count pattern of the first counter is synchronized with the frequency F1,
a second counter configured to count up and down at a frequency F2 of a second modulated light source in the environment, such that a periodicity of an up-down count pattern of the second counter is synchronized with the frequency F2, and
a third counter configured to count up and down at a frequency F3 of a third modulated light source in the environment, such that a periodicity of an up-down count pattern of the third counter is synchronized with the frequency F3,
wherein the frequencies F1, F2, and F3 are different from each other.