Lately I have been messing around with optical flow effects.
This is demo is the cumulation of this mess:

These places gave my the right code snippets and inspiration to start:
marek bereza for the optical flow
apple and the guys from the kineme forum for the fluid dynamics

I’m working on a Quartc Composer filter based on the semi old school video effects from Snoop Dogg’s Sensual Seduction

here the original:

Quarz Composer OpenCL Boids 2.0 from Matthias Oostrik on Vimeo.

It’s quite hard for vimeo to show the details , so here a couple of snapshots:

Dust and I were working on boids some months ago for a generative artwork. I got distracted by other projects, but recently i had some time to spare, so i decided to rewrite the code for the purpose of sharing. Here it is…

Sources:

• The current Boid system is based on this C++ code by Christopher Kline.
• My research started with this page from Conrad Parker.
• For the future I’m inspired by this demo. The inputs are very understandable and easy to handle.

In future versions i’m thinking of:

• add collision and attraction objects/functionality for use with mouse, motion detection etc.
• convert to a music visualizer

Changing the amount of boids or the tail length while running the composition often results in a Crash (QC bug)

>>> download boids quartz comp <<<

for more info on the composition visit the thread on kineme