US 12,092,523 B2
Spectral reconstruction of detector sensitivity
Gunter Siess, Oberterzen (CH); and Julius Komma, Jena (DE)
Assigned to ams Sensors Germany GmbH, (DE)
Appl. No. 17/609,153
Filed by ams Sensors Germany GmbH, Jena (DE)
PCT Filed Jun. 17, 2020, PCT No. PCT/EP2020/066816
§ 371(c)(1), (2) Date Nov. 5, 2021,
PCT Pub. No. WO2020/254438, PCT Pub. Date Dec. 24, 2020.
Claims priority of provisional application 62/862,818, filed on Jun. 18, 2019.
Prior Publication US 2022/0228913 A1, Jul. 21, 2022
Int. Cl. G01J 3/52 (2006.01); G01J 3/10 (2006.01); G01J 3/28 (2006.01); H04N 17/00 (2006.01)
CPC G01J 3/524 (2013.01) [G01J 3/10 (2013.01); G01J 3/28 (2013.01); H04N 17/002 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A system comprising:
memory; and
control circuitry coupled to the memory, the control circuitry configured to:
receive, from a sensor, spectral sensitivity data, wherein the spectral sensitivity data is generated based on spectral responses of a plurality of spectral channels of the sensor to emissions from a plurality of light sources and/or from a configurable light source;
convert the spectral sensitivity data into a plurality of spectral sensitivity data values, wherein each of the plurality spectral sensitivity data values represents a spectral response of a channel of the plurality of spectral channels to an emission from a light source of the plurality of light sources and/or from the configurable light source;
retrieve, from the memory, a plurality of reference spectral sensitivity data values for each of the plurality of light sources and/or for each configuration of the configurable light source, each spectral sensitivity data value corresponding to a channel of the plurality of spectral channels;
compare each of the plurality of spectral sensitivity data values during an emission period to a corresponding reference value of the plurality of reference spectral sensitivity data values during the emission period;
calculate, for the plurality of spectral sensitivity data values and based on the comparing, a plurality of difference values during the emission period;
generate, based on the plurality of difference values, a calibration matrix for the sensor; and
cause an emission from the light source of the plurality of light sources and/or from the configurable light source during the emission period so that the corresponding reference value and the spectral sensitivity data have the same period for the comparison.