Apple Motion 2 Getting Started Manual do Utilizador descarregar pdf (Página 152)

152 Chapter 5 Extra Credit

Adjust the Primatte RT parameters:

1 In the Primatte RT Dashboard, or the Inspector > Filters tab, choose Matte from the

Output Type pop-up menu.

The matte is displayed in the Canvas. When the Primatte RT filter is first applied to the

image, it automatically starts to pull the key. However, often the matte is not clean—

there are many gray areas. Any dark areas of the matte result in transparency in the

areas that should be opaque.

2 Clean up the matte in the Primatte RT parameters:

a In the Auto Sample parameter, click Blue. If using a green screen shot, click Green.

When the Primatte RT filter is first applied to an image, the image is auto-sampled

and the best estimated keying color is inferred. By clicking Auto Sample, the

dominant color in the image (between red, green, and blue) is automatically sampled

and used as the keying color.

Output Type pop-up menu

Initial matte with Output Type set to Matte

Initial matte with Output Type

set to Processed Foreground

(composite)

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Apple Motion 2 Getting Started Manual do Utilizador Página 152