In case you were wondering, this is what a tray of cookies looks like on a thermal camera, fresh out of the oven (first pic) and during cooling (the other pics). The second pic shows traditional German cinnamon waffles, the others show shortcrust cookies.
The applications of thermal cameras in the kitchen are totally underrated. You can easily tell which ones are cold enough to be stacked and put into boxes.
Temperatures shown in the pictures are in Celsius.