Effect: Blue Screen Mask, Smooth

Description
Extracts the mask for a blue screen compositing operation. Areas of the image which are blue are considered to be transparent. This is useful for further tweaking the mask before using it in a compositing operation.

Controls

Outside Fill:		Determines the extent to which the background (blue) region of the image spreads into the foreground region.
Inside Fill:		Determines the opacity of the foreground (not blue) region of the image.
Choke:		Shrinks the edges of a mask and makes those edges harder.

Examples

Source	Result