Believe it or not real life military research is only a few years away from this. Currently it most like a projector screen. And image is recorded of the background then played back onto the fabric
i've seen the prototypes using fibreoptics, only good from viewing from the front, not the sides, but was too bulky to make it practical, how far they're along now, i don't know, wasn't privvy to follow up tests
More than likely the technology will be used on the bottom of planes and the concealment of stationary onjects on base for the reason yu stated, it can only be effective if looked at a certian angle.
No I'm just kidding, welcome