US 12,436,090 B2
System and method for extracting optical feature information
Hoe-Sung Yang, Daejeon (KR); and Kang Bok Lee, Daejeon (KR)
Assigned to ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, Daejeon (KR)
Filed by ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, Daejeon (KR)
Filed on Apr. 21, 2023, as Appl. No. 18/137,574.
Claims priority of application No. 10-2022-0179158 (KR), filed on Dec. 20, 2022.
Prior Publication US 2024/0201069 A1, Jun. 20, 2024
Int. Cl. G01N 21/17 (2006.01); G01N 21/47 (2006.01); G01N 21/55 (2014.01); G01N 21/59 (2006.01)
CPC G01N 21/17 (2013.01) [G01N 21/47 (2013.01); G01N 21/55 (2013.01); G01N 21/59 (2013.01); G01N 2021/1736 (2013.01)] 14 Claims
OG exemplary drawing
 
1. An optical feature information extraction system comprising:
a light source part which generates light having a plurality of wavelengths;
a photodetecting part which detects light of each wavelength by any one of scattering, transmission, and reflection of the generated light with respect to an object;
an analog front end part amplifying a first measurement value from the photodetecting part; and
a control part which extracts an optical feature value for the object based on the amplified first measurement value,
wherein the control part obtains an amplified second measurement value of the photodetecting part for each wavelength in a state in which no object is present, and normalizes each first measurement value for each wavelength based on the second measurement value.