US 11,835,923 B2
Imaging through scattering media
Richard G Paxman, Saline, MI (US); and David A. Carrara, Dexter, MI (US)
Assigned to MAXAR MISSION SOLUTIONS INC., Westminster, CO (US)
Filed by RADIANT GEOSPATIAL SOLUTIONS LLC, Wilmington, DE (US)
Filed on Nov. 6, 2020, as Appl. No. 17/092,181.
Prior Publication US 2022/0146982 A1, May 12, 2022
Int. Cl. G03H 1/08 (2006.01); G03H 1/00 (2006.01)
CPC G03H 1/0866 (2013.01) [G03H 1/0005 (2013.01); G03H 2222/12 (2013.01); G03H 2240/54 (2013.01)] 24 Claims
OG exemplary drawing
 
1. An imaging system, comprising:
a laser source;
a digital sensor array;
a processing system including at least one processor, the processing system being configured to perform operations comprising:
transmitting light from the laser source to a target object;
detecting interference formed on the digital sensor array by a reference beam from the transmitted light and reflected light from the target object, the reflected light either travelling through or being reflected by a scattering medium located between the target object and the digital sensor array;
jointly estimating, based on the detected interference, the scattering medium and an image of the target object; and
outputting the jointly estimated image of the target object,
wherein the jointly estimating includes:
determining an intermediate estimate of a transmission matrix of at least one diffuser corresponding to the scattering medium;
for each of a plurality of speckle realizations, inverse propagating wave fields detected at the digital sensor array, back to the estimated diffuser, through the estimated diffuser, and back to a location of the target object;
determining an intermediate estimate of an incoherent object by speckle averaging at a plane of the target object;
determining a performance metric of the estimated incoherent object; and
maximizing the performance metric by iteratively changing the estimate of the transmission matrix.