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Apple Shake 4 User Manual

Page 423

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Chapter 15

Image Processing Basics

423

4

In the Node View, select the munch_pre node, click the Layer tab, then click the
Over node.

An Over node is added to the munch_pre node.

5

Connect the bg node to Background input (the second input) of the Over node.

6

Now, insert a Color–ContrastLum node between the munch_pre node and the Over
node, and set the ContrastLum value to .5.

If you zoom into the edges, a white edge appears around Munch. This unwanted fringe
is problem number one.

7

To replace the ContrastLum node, select it in the Node View and Control-click the
Color–Add node.

The ContrastLum node is replaced by an Add node.

8

In the Add parameters, boost the Color (red/green/blue) values to approximately .4.

Note: To adjust the color values, you can also press O (for Offset) and drag the pointer
to the right over the Add color control.

Although the Add node is only applied to the munch_pre node, the entire image is
brightened. A node affecting more of the image than it’s supposed to is problem
number two.