It’s funny - the test rig in the article shows wraparound LED displays, which are already replacing a lot of green screen applications: the scene is rendered in

It’s funny - the test rig in the article shows wraparound LED displays, which are already replacing a lot of green screen applications: the scene is rendered in real-time on those displays, taking the position and angle of the camera as input to get the perspective correct: there’s no masking to do, because the scene just “looks correct” in camera. The Mandalorian was a high-profile early use of the tech. It’s pretty impressive!