View Full Version : "Body Horror": finishing up? Finalizing effect for delivery - questions and caveats?

06-01-2014, 11:14 AM
So, Seattle's internetz finally let me watch Jen "Celshader" Hachigian's very informative SIGGRAPH tutorial on Bullet and deformation:


All sorts of good workflows in there. :thumbsup:

BUT: assuming one gets the deformations tweeked to perfection, how is the effect married to the plate? What are the steps required to get the deformation integrated with the talent's body or whatever?

And what are the caveats? For instance, I bet this is a LOT easier to work with if you never have to deal with profiles, iow the effect always occurs ON the skin of the talent, rather than extrude out past the talent's profile (which I imagine would require green screening in the background).

06-01-2014, 11:20 AM
You would do some front projection of the plate on to your geometry. Or match the texture of whatever is on the plate and swap out to that. Same idea as replacing an actor with a digital double in the middle of the action.

06-01-2014, 12:03 PM
So, pretty much hand matching? I imagine the talent would be thrashing around pretty good if this were happening to their character. ;)

06-01-2014, 12:14 PM
Yep, you might be able to get close with a matchmoving program but hand tweaking will probably still need to be done.

The vfx supervisor could also request a minimal amount of camera movement and actor thrashing. It's probably why you see a lot of locked off cameras and minimal movement in the lower budget sci-fi movies. Makes cranking out the fx shots easier.

06-01-2014, 12:36 PM
Ha, yeah, this is where the talent's comrades have pinned her/him down-- much cheaper!

(I can't believe I didn't know that w.map trick.... sheesh.) :redface: