Graphics Programs Reference
In-Depth Information
Objective Complete - Mini Debriefing
This was a very straighforward task—we just created a basic node setup mixing two sources:
the snail from the 3D scene and the live footage that we downloaded in the preparaion part
of the project.
This ime we used the AlphaOver node, which allows us to get an image composited over
another, using the Alpha channel to decide where to let the lower image to show through.
The Convert Premul opion is needed to get the image converted into a more suitable
format for this kind of mixing.
Mission Accomplished
There we have it, a very nice snail composited over a leaf from live footage. Let's check our
final image, as shown in the following screenshot:
Our lovely snail is going to enjoy eaing all those leaves!
 
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