US 11,927,700 B1
Systems, methods, and media for improving signal-to-noise ratio in single-photon data
Jongho Lee, Madison, WI (US); and Mohit Gupta, Madison, WI (US)
Assigned to Wisconsin Alumni Research Foundation, Madison, WI (US)
Filed by Wisconsin Alumni Research Foundation, Madison, WI (US)
Filed on Jan. 31, 2023, as Appl. No. 18/162,397.
Int. Cl. G01S 7/497 (2006.01); G01S 17/89 (2020.01); H04N 23/81 (2023.01)
CPC G01S 7/497 (2013.01) [G01S 17/89 (2013.01); H04N 23/81 (2023.01)] 20 Claims
OG exemplary drawing
 
1. A system for generating single-photon imaging data with improved signal-to-noise ratio, the system comprising:
at least one hardware processor that is programmed to:
generate, for each of a plurality of pixel locations, initial photon flux estimates based on a first set of photon transients including a photon transient associated with the pixel location and photon transients associated with neighboring pixel locations,
wherein each of the photon transients comprises a histogram of photon counts during a plurality of time bins at the pixel location;
identify, for a scene patch associated with each of the plurality of pixel locations, one or more similar scene patches using intensity information for each of the plurality of pixel locations; and
generate, for each of the plurality of pixel locations, final photon flux estimates based on a second set of photon transients including photon transients associated with the scene patch and each of the one or more similar scene patches.