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Optical Flow

2D Modifier - Use image feedback to convert movement to rgb colors

Use a frame delay to color the difference and so generate some kind of real time vector map. Better to put the iteration parameter to its maximum for a better effect. Very effective as a vector field map inside a Normal Map Layer set over a particle system.
Here is a video tutorial to help you figure how to use it :
Watch directly on youtube

PARAMETERS

  • Num Iterations Number of iterations from detailled to broad (the more the better your normals will display big movements)

PARAMETERS COMMON TO ALL FRAME DELAY BASED MODIFIERS

  • Rasterize Quality Rasterize quality of the optical flow

SEE ALSO

In same group: Frame Delay based Modifier and Frame Delay. Mentioned: Normal Map Layer.