Spectrum simulation apparatus and method for contaminated atmosphere

A spectrum simulation apparatus using virtual information on at least one toxic substance generated by a user comprising:

• a background image acquisition unit including at least one camera and an infrared sensor configured to acquire a background image of a target region and an infrared signal corresponding to each pixel of the background image;
• a spectrum acquisition unit configured to acquire a background radiation intensity spectrum from the infrared signal acquired for the each pixel;
• an input unit configured to input, by a user, the virtual information on at least one toxic substance and atmosphere transmittance that are generated by the user;
• a simulation spectrum generation unit configured to generate a model of a linear combination of a radiation intensity spectrum of a contamination cloud and a background radiation intensity spectrum on the basis of a difference in radiation intensity, which depends on whether or not the contamination cloud is present;
• a controller configured to control the simulation spectrum generation unit in such a manner that a simulation spectrum of the contamination cloud contaminated with the at least one toxic substance, which corresponds to the each pixel, is generated by applying the virtual information on the at least one toxic substance and the atmosphere transmittance that are generated by the user to the model of the linear combination;
• and
• an imaging unit that, under the control of the controller, configured to generate a spectrum image in accordance with the simulation spectrum corresponding to the each pixel, combines the generated spectrum image and the background image, and thus generates a simulation contamination cloud image.