US 12,372,404 B2
Illuminant correction in an imaging system
Jonathan Borremans, Lier (BE); Ruben Lieten, Heverlee (BE); Ward van der Tempel, Keerbergen (BE); Maarten De Bock, Ghent (BE); and Jakub Raczkowski, Bertem (BE)
Assigned to Spectricity, Mechelen (BE)
Filed by Spectricity, Mechelen (BE)
Filed on Oct. 31, 2022, as Appl. No. 18/051,166.
Application 18/051,166 is a continuation in part of application No. 17/349,142, filed on Jun. 16, 2021, granted, now 11,747,533.
Application 17/349,142 is a continuation in part of application No. 17/340,449, filed on Jun. 7, 2021, granted, now 11,696,043.
Application 18/051,166 is a continuation in part of application No. 17/340,449, filed on Jun. 7, 2021, granted, now 11,696,043.
Claims priority of provisional application 63/264,599, filed on Nov. 26, 2021.
Claims priority of provisional application 63/066,507, filed on Aug. 17, 2020.
Claims priority of provisional application 63/047,084, filed on Jul. 1, 2020.
Prior Publication US 2023/0082539 A1, Mar. 16, 2023
Int. Cl. G01J 3/28 (2006.01); G01J 3/26 (2006.01)
CPC G01J 3/2823 (2013.01) [G01J 3/26 (2013.01); G01J 2003/2826 (2013.01); G01J 2003/2836 (2013.01); G01J 2003/2879 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A method for imaging a scene comprises:
imaging, using a spectral imager, a received light spectrum for the scene at time T1, wherein the spectral imager includes a plurality of spectral sensors, wherein a spectral sensor includes a spectral filter overlaying one or more first optical sensors, wherein each spectral sensor has a sensing range within a predetermined range of optical wavelengths, wherein the sensing range for the plurality of spectral sensors together include a spectrum of wavelengths;
outputting, by the spectral imager, via one or more interfaces, information representative of a spectral image for the scene at T1 to one or more processing modules of one or more computing devices;
imaging, using an image sensor, the scene at time T2, wherein the image sensor includes a plurality of second optical sensors;
outputting, by the image sensor, via one or more interfaces, information representative of an image of the scene at T2 to one or more processing modules of the one or more computing devices, wherein the image of the scene has a spatial resolution that is higher than the spatial resolution of the spectral image;
producing a combined spectral image, by one or more processing modules of the one or more computing devices, based on the information representative of a spectral image for the scene at T1 and the information representative of the image at T2; and
correcting, by the one or more processing modules of the one or more computing devices based on the combined spectral image, an illuminant for one or more spatial areas of the scene to produce a corrected spectral image.