Normal
Thermal cameras measure the IR radiation coming off a surface (+ reflected + transmitted, though these are usually small). They're more or less unaffected by air conditions. You're seeing the temperature of the surface in that image, not the air. They are impacted by the emissivity of the material, although for most painted non-reflective metals and plastics it's pretty consistent around 0.95.The most likely reason for "smearing" in that image is they're using a relatively cheap thermal camera. High resolution thermal cameras are very expensive, so what most of the models <$1,000 do is have 2 cameras. 1 high resolution visible light camera, and 1 low resolution thermal camera. They overlay the high res visible light image over the coarse thermal data to make the thermal image look higher resolution than it is.
Thermal cameras measure the IR radiation coming off a surface (+ reflected + transmitted, though these are usually small). They're more or less unaffected by air conditions. You're seeing the temperature of the surface in that image, not the air. They are impacted by the emissivity of the material, although for most painted non-reflective metals and plastics it's pretty consistent around 0.95.
The most likely reason for "smearing" in that image is they're using a relatively cheap thermal camera. High resolution thermal cameras are very expensive, so what most of the models <$1,000 do is have 2 cameras. 1 high resolution visible light camera, and 1 low resolution thermal camera. They overlay the high res visible light image over the coarse thermal data to make the thermal image look higher resolution than it is.
