- Posts: 217
- Joined: Thu Apr 30, 2015 10:29 am
You have to extract the portion you want to seperate before you feed it into a merge.
A polymask on the merge tells Fusion: 'I only want the combine these two images where the mask is'
What you are trying to do (I presume) is cut out the face, so you have bascially a face with a transparent background that you can then put on top of your background.
To do this: feed your image into a matte control and then use a polymask that you feed into the garbage matte input of the matte control, invert the mask and cut out the face.
Then you could put *that* with a merge (without a mask) on top of your background.