So, first steps and first conclusions in the study of painting with a thermal imager.
The first is that the emissivity of the device should be put equal To-0.3 (copper) or less. When the ratio is equal to "paper" or "plastic" device does not see the picturesque image.
The second is that the camera "sees" through the canvas when placing the source of infrared radiation from the side of the paint layer (on clearance).
Third is that you have to look at black and white, not color mode.
Fourth - what "first" and "second" and "third" may be erroneous steps in the wrong direction, but that there is something there...
Sincerely,
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