I'm surprised they don't flash the lighting at high speed. Humans have persistence of vision--computers don't.
It seems like you could create 1 frame green, 1 frame magenta, and n frames normal and still pick up the data you need.
It seems like you could create 1 frame green, 1 frame magenta, and n frames normal and still pick up the data you need.
But given that it comes from Netflix, it is probably also constrained by wanting to work with commodity cameras and optics. It seems they would want techniques that can scale to many productions at once with low marginal cost.
"We address this by increasing the repeating rate of the two lighting conditions at 72HZ, so that the lighting changes from one color to the next every 144th of a second. The lighting then appears nearly constant, with a remaining effect being that rapidly moving objects leave a trail of magenta/green outlines when seen against the screen, as in Figure 6 (bottom)."
"The remaining drawback of time-multiplexing in this manner is that the shorter shutter angle reduces the amount of motion blur, which is considered desirable for cinema."
Interesting that the complaint is that it reduces motion blur.