Check Out How Developer Implemented Optical Flow in Houdini COPs

Jakob Bock demonstrated mesmerizing transitions.

3D artist Jakob Bock showcased his beautiful implementation of optical flow in Houdini's Copernicus nodes (COPs).

"Optical flow quantifies the motion of objects between consecutive frames captured by a camera. These algorithms attempt to capture the apparent motion of brightness patterns in the image."

The tool is used to extract motion from any input video "for any effect that needs to know where things are moving." It utilizes the Lucas-Kanade algorithm with a 4-level Gaussian pyramid for accurate tracking of real-world motion.

The result is gorgeous (and slightly trippy) animations full of color and swirls – one of Bock's favorite subjects, if his fluid simulations are anything to go by. You can grab the HDA here.

Bock's LinkedIn has plenty of other curious works, like this mild slope solver:

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