Thermal cameras care about more than just the absolute temperature of an object. The emissive and reflective properties of the material (in infrared) also matte

Thermal cameras care about more than just the absolute temperature of an object. The emissive and reflective properties of the material (in infrared) also matter significantly. A human being would almost certainly be visible in a thermal imaging view of that scene. When you walk outside in the daytime, everything is bathed in a uniform light from the sun, but you have no trouble distinguishing between objects, as they emit and reflect light differently.