Sony DVS-9000 - Manual (Page 43)

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Keys
Chapter 1
D
V
S-9000 Functions
DVS-9000/9000SF
3-704-674-01 (1)
• When the edge type is normal with soft edge being on
• When [Fine Key] is on
Edge fill
When a border, drop border, or shadow modifier is selected, you can select a
signal to fill these edge effects.
The edge fill may be either the signal from the dedicated color matte generator,
or the signal currently selected on the utility 1 bus.
In the case of an outline, there is no edge fill signal selection, because the key
fill signal fills the outline, and the rest of the image remains as the background.
For the emboss effect, in place of the edge fill signal, the emboss fill matte 1
and emboss fill matte 2 signals are used.
Masks
A mask is used to inhibit the effect of a key over a part of the image. This
allows parts of the background which would otherwise be keyed to be
protected, or to correct the key if it is not of the desired shape.
For details of masking operations, see “Masks” (pages 217 and 231).
Key mask and background mask
There are two types of mask: a key mask and a background mask.
Key mask: This masks out a part of the key, which will result in the
background appearing.
Background mask: This masks out a part of the background, which will result
in the key fill appearing.
Main mask and subsidiary (“sub”) mask
Each keyer allows two masks to be used simultaneously, and these are referred
to as the main mask and the sub mask. The signal that determines the mask
shape and size is termed the mask source, and different sources are used for the
main mask and sub mask.
Main mask: This uses the signal from the dedicated box generator provided
on each keyer, or the signal from the dedicated pattern generator as the
Key mask
Masked area (box)
Background mask