1 NIR and SWIR cameras generally detect scattered item radiation and need external irradiation supplied by the Sunlight. Based on the expression of pixel output of two-point calibration, the mathematical expression on the corresponding output of each and every detection factor under the radiation of uniform blackbody with diverse intensities https://irimaging65517.eedblog.com/27835211/the-definitive-guide-to-ir-thermal-imaging