Crystal Vision
Appendix 1
Masks
The FG and BG masks are used to override the chroma key to
either force the BG image in areas of poor backdrop quality or to
disable in unwanted areas. Note that the masks also have an effect
on the self key and external key signals.
FG Mask
FG Mask Control
Enable
Select this control to enable the FG mask. This user-
positionable mask will override the chroma key in its active
area to force the BG signal. Use this mask if the chroma key
backdrop is too small or damaged, or badly lit at the edges.
Invert
Select this control to invert the mask.
FG Mask
Window
Left/Right/Top/Bottom
Use these controls to position the mask rectangle.
FG Mask
Softness
Left/Right/Top/Bottom
Use these controls to soften the four edges of the mask to
make the mask less noticeable.
Safire 3 User Manual R1.3
90
24 March 2017
