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Table Of Contents
3D Effect Parameters
686
Erode/Expand
Erode/Expand controls the blending of the edges on 3D Warp effects. This parameter is not
keyframeable.
RGB processing is not available for Erode/Expand.
Command Description
Type menu Click to select the type of defocus that your Avid editing application applies. Key
Only, FG and Key, and KeyBlur are available only on three track effects such as Matte
keys and Titles promoted to 3D.
The following options are available:
• Internal — blurs the entire image.
• FG (foreground) Only — blurs only the foreground of a two-track or three-track
effect.
• Key Only — blurs only the key in a three-track effect.
• FG and Key — blurs both the foreground and the key in a three-track effect.
• Key Blur — uses alpha channel values as a template for blurring the foreground
image.
When you select Key Blur, your Avid editing application blurs the foreground in
proportion to the opacity of the matte. Black matte values cause no blurring, while
white matte values cause maximum blurring.
You might use this effect to selectively blur part of a foreground image, such as a
face, by creating a moving matte for the area of the image you want to appear
blurred. Use the Offset parameter to control how much of a blur Defocus applies
to the face. You could also use a KeyBlur matte to create a soft-focus area around
a foreground subject.
Horz (horizontal),
V (vertical)
Increases or decreases horizontal or vertical blur. Values range from 0 to 15, where 0
represents no change.
When the Type menu is set to Internal, the default value is 10 for both parameters.
When the Type menu is set of FG Only, Key Only, or FG and Key, the default value is
0 for both parameters. When the Type menu is set to Key Blur, these parameters do
not appear.
Offset Increases or decreases the relative amount of blurring that Defocus applies. Values
range from –100 (minimum blur) to 100 (maximum blur). When the value is 0, your
Avid editing application makes no further adjustment to the foreground after it applies
the KeyBlur option. This parameter is only available when the Type menu is set to Key
Blur.