Graphics Programs Reference
In-Depth Information
Nuke has several kinds of image manipulation tools. By placing them in a specific order
one after another, you can create your desired effect. This process is similar in any com-
positing application, but in Nuke everything is open and at your control. Having each in-
dividual process exposed achieves a greater level of control, which enables you to keep
tweaking your work to your or your client's needs quickly and with relative ease.
Usually,youstart a composite with one ormore images brought in from disk. Youmanip-
ulate each image separately, connect them together to combine them, and finally render
the desired result back to disk. This process builds a series of processors, or
nodes
, which
together look like a tree, which is why it's called a process tree. Note that Nuke uses a
secondanalogytodescribethisprocess,thatoftheflowofwater.Atreecanalsobecalled
a
flow
. As the image passes from one node to another, it flows. This analogy is used in
terms such as
downstream
(for nodes after the current node) and
upstream
(for nodes be-
fore the current node). Nuke uses these two analogies interchangeably.
two images—the smiling doll on the top left and the orange image on the top right. The
images are being passed through several nodes—a resolution changing node, a color cor-
rection node, a transformation node—until they merge together at the bottom of the tree
with another node to form a composite. The lines connecting the nodes to each other are
called
pipes
.
Figure 2.1. This is what a basic Nuke tree looks like.
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