like the maya workflow:

https://www.youtube.com/watch?v=qGJ7DcB-Rh0 [youtube.com]

?

Trace SOP.

This SOP doesn't have a tool at the object level (submitted RFE for this) so you have to first create a default object in your scene, dive in and then tab-type Trace to add the SOP.

The Trace SOP will take the image on disk or from the built-in compositor and generate outline contour curves based on your chosen parameters.

Quite a few options.

See attached file for a quick COP based workflow. Feel free to add any number of compositing operations to the image network in /img/comp1 to directly affect the result of the Trace SOP.

i love this board - thank you!