Calculate Intrinsics for a Thermal Camera?

Question

I"m using a Thermal camera for a project and I'm a little stumped so as to how to think about calculating intrinsics for it. The usual camera's would determine different points on a chessboard or something similar, but the thermal camera won't really be able to differentiate between those points. Does anyone have any insight on what the intrinsics for thermal cameras would really look like?

Cheers!

EDIT - In addition to the great suggestions I currently have, I'm also considering using aluminum foil on the whites to create a thermal difference. Let me know what you think of this idea as well.

Answer 1

This might or might not work, depending on the accuracy you need:

• Use a chessboard pattern and shine a really strong light at it. The black squares will likely get hotter than the white squares, so you might be able to see the pattern in the thermal image.
• Put small lightbulbs on the edges of a chessboard pattern, light them, wait until they become hot, use your thermal camera on it.