Abstract: A system and a method for quantifying the amount and toxicity of a point source gaseous discharge without contacting or physically sampling the point source gaseous discharge, includes: a digital camera capable of capturing multiple images of the point source gaseous discharge and an advanced thermographic camera capable of capturing multiple infrared images of the point source gaseous discharge; and processing circuitry configured to: delineate a smoke region around a point source discharge according to a temperature profile around the point source determined from the normal and infrared images of the space around the point source; digitally record a temperature profile of the smoke region; fuse the aggregated information from the separate images captured using the normal thermographic cameras in order to obtain the emissivity and radiation intensity of one or more components of the point source gaseous discharge in the smoke region from a static database; determine the identity of the components of the poin