Systems and approaches for improving accuracy of temperature measurements using thermal imaging

A temperature detection system for correcting a surface temperature measurement of a subject, the temperature detection system comprising:

• a housing;
• a thermal imaging system at least partially disposed within the housing, the thermal imaging system configured to capture at least one captured thermal image of the subject;
• and
• a data correction system communicatively coupled with the thermal imaging system, wherein the data correction system (i) performs a calibration of the thermal imaging system by capturing thermal images of a plurality of controlled temperature scenes, each scene having at least two uniform regions having different temperatures, to generate a convolution kernel that corrects a local pixel radiant intensity error of the thermal imaging system based upon an analysis of the captured thermal images of the plurality of controlled temperature scenes, and (ii) corrects at least one error associated with the at least one thermal image of the subject including an error associated with a local pixel radiant intensity error, wherein to correct the at least one error, the data correction system is configured to apply the convolution kernel generated during the calibration to the at least one thermal image of the subject.