US 11,890,094 B2
Illuminant correction for a spectral imager
Jonathan Borremans, Lier (BE); Maarten De Bock, Ghent (BE); and Jakub Raczkowski, Bertem (BE)
Assigned to Spectricity, Mechelen (BE)
Filed by Spectricity, Mechelen (BE)
Filed on Jun. 30, 2022, as Appl. No. 17/809,998.
Application 17/809,998 is a continuation in part of application No. 17/170,127, filed on Feb. 8, 2021, granted, now 11,493,387, issued on Nov. 8, 2022.
Claims priority of provisional application 63/364,408, filed on May 9, 2022.
Claims priority of provisional application 62/988,759, filed on Mar. 12, 2020.
Prior Publication US 2022/0346672 A1, Nov. 3, 2022
Int. Cl. G01J 3/02 (2006.01); A61B 5/1455 (2006.01); G06N 3/08 (2023.01); A61B 5/00 (2006.01); G06N 3/067 (2006.01)
CPC A61B 5/1455 (2013.01) [A61B 5/443 (2013.01); G06N 3/067 (2013.01); G06N 3/08 (2013.01); A61B 2562/0238 (2013.01); A61B 2562/046 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A sensor system comprises:
a plurality of optical sensors on an integrated circuit, wherein the plurality of optical sensors are configured in an array;
a plurality of sets of optical filters atop at least a portion of the array, wherein each set of optical filters is associated with a set of optical sensors of the plurality of optical sensors, wherein a set of optical filters of the plurality of sets of optical filters includes a plurality of optical filters, wherein each optical filter of the plurality of optical filters is configured to pass light in a different wavelength range;
a first interface configured to interface with the plurality of optical sensors;
first processing circuitry operably coupled to the first interface, wherein the first processing circuitry is configured to execute operational instructions to:
receive an output signal from the plurality of optical sensors, wherein the output signal is representative of received light from the plurality of optical sensors and determine a spectral response for each set of optical sensors associated with a set of optical filters;
a second interface configured to interface with the first processing circuitry;
second processing circuitry operably coupled to the second interface, wherein the second processing circuitry is configured to execute operational instructions to:
determine, based on the spectral response for each set of optical sensors associated with a set of optical filters, an illuminant spectrum for each spectral response and substantially remove the illuminant spectrum from the spectral response.