Apple Shake 4 Tutorials Uživatelský manuál stáhnout pdf (Strana 174)

174 Chapter 5 Using Keylight

Here is the crucial trick:

7 In the Over1 parameters, activate preMultiply.

The nasty gunk around the character is removed.

For the color correction:

Once again, you are matching a foreground image to a limited background image.

8 Load the Compress parameters by clicking on the right side of the node.

9 In the Compress node parameters, click the Low Color control and scrub in the dark

corner of the background.

The low color is selected.

10 To select the high color, click the High Color control and scrub on a bright portion of

the background.

Note: In the Color Picker, Use Source Buffer is off. This is good, since you want to scrub

color from the composite rather than from the unpremultiplied image coming out of

Keylight.

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Apple Shake 4 Tutorials Uživatelský manuál Strana 174