Pixel Tracking Methods: Optical Flow Methods

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Thanks for taking the time to respond to me.

I want to use this for UE4 content, do you think you could help describe the steps to output per-pixel motion vectors/velocities/distances traveled?

Ideally, I want to attach a scene capture to an actor with custom render target that outputs the motion vectors between frames. I want to be able to place this actor on different levels and capture the scene as well as the motion vectors for each of the pixels rendered.