System and method for extracting optical feature information

An optical feature information extraction system comprising:

• a light source part which generates light having a plurality of wavelengths;
• a multiple-channel-based photodetecting part which detects light of each wavelength by two or more of scattering, transmission, and reflection of the generated light with respect to an object;
• an analog front end part amplifying a plurality of first measurement values corresponding to respective multiple channels in the photodetecting part;
• and
• a control part which extracts an optical feature value for the object based on the amplified plurality of first measurement values,
• wherein the control part obtains a plurality of amplified second measurement values corresponding to respective channels of the photodetecting part for each wavelength in a state in which no object is present, and normalizes the first measurement values for each channel for said each wavelength based on the plurality of second measurement values.

A method performed by an optical feature information extraction system, the method comprising:

• generating light having a plurality of wavelengths through control of a light source part;
• detecting light of each wavelength by any one of scattering, transmission, and reflection of the generated light with respect to an object by controlling a photodetecting part;
• amplifying a first measurement value from the photodetecting part through an analog front end part;
• and
• extracting an optical feature value for the object based on the amplified first measurement value,
• wherein the extracting the optical feature value for the object based on the amplified first measurement value includes:
• obtaining an amplified second measurement value of a photodetecting part for each wavelength in a state in which no object is present;
• and
• normalizing each first measurement value for said each wavelength based on the second measurement value.