Generate Fog or Smoke on 2D Images

Hey all,

I’m interested in generating some smoke or fog to place over a 2D image, does anyone know how I would go about this?

I’m guessing something with SOPs, but I’m not to familiar with that OP category.

Thanks!

some ideas:

technique1: use nvidia flow from the lastest experimental (does awesome smoke and fire)

technique2: create a feedback loop with a noise, a blur, some translation, maybe a displace

technique3: overlay a noise that looks like clouds/smoke

technique4: create a particle system with smokey sprites