one last rotoscoping question. Maybe
by pom_boarder
on
Feb 17, 2007 at 6:21:02 am
I've successfully roto'd the sction I was after. Now I want to feather all the masks. I've tried the group, amin and edge buttons referred to in the manual but it didn't seem to feather the edges, plus, i want the feathering, say 2 pixels to apply to all the masks throughout the rotoscoping.
Am I going about this the right way? Should I be grouping everything together and blurring the edges of the alpha channel? Any other approach to what I want to do?
Re: one last rotoscoping question. Maybe by Andrew Shanks on Feb 18, 2007 at 9:05:41 pm
If you are wanting to blur all the shapes at the same time with the same amount of feather, the quick way is to attach a blur node to the output of the rotoshape node then port that into whichever node you're using the matte for. If building a mask out of mulitple rotoed shapes, I tend to have one shape in a rotoshape node, ...i.e. you end up with a pile of rotoshape nodes all linked together using screen (or max, or add, whatever mode you want to use) or inverted then subtracted to cut holes in the matte (isub, min, etc), ...it just makes it easier to have a quick look at the tree and see where everything is, what everything is doing, ....it's a personal preference thing, but i just don't like having more than one shape in a rotoshape node.
The edge feathering within the rotoshape node is pretty straight forward, you select the relevant 'edge' points on a shape then drag them out to create the feather (if you have shake 4.1, the steps in Volume II, chapter 6, page 172 are pretty clear.
