Its related but not it exactly. What you showed is a infrared light source under the felt, and the right side shows what the IR camera sees. It's actually very simple technology. It's no different shining a flashlight through a card, except the light is a wavelength your eyes cant see without an infrared camera.
But in a casino you cant so easily put an IR emitter under a table. Besides cheating by modifying a table, which would need casino staff collusion, you need to see through the card from the top of it with no light source beneath it. That's the real problem and I have a working solution, but its not perfect.