Barco ScreenPRO-II, User Manual

Page: 157 / 292

ScreenPRO-II Controller • User’s Guide 157
4. Menu Orientation
Key Menu
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A Luma (luminance) key is one in which the hole-cutting information is derived from the
luminance (brightness) level of the key source.
The following Key Menu functions are provided when Luma key is selected:
•
Invert Mode — enables you to invert the key signal.
•
Clip — adjusts the threshold of the video that electronically “cuts” into the
background image. A hole will be cut into the background anywhere that
foreground luminance is greater than the clip level. The hole is then filled with the
Fill Source . Adjustment range is 0 to 1023.
•
Gain — adjusts the sensitivity of the keyer, enabling you to change the sharpness
of the keyed image. Gain only affects the key hole, as set by the clip. Adjustment
range is 0 to 1023.99.
•
Opacity — enables you to adjust the opacity of the keyed image, from fully
opaque to fully transparent. Adjustment range is 0 to 1024.
•
Fill Source — determines the video that fills the key hole:
~
Self — fills the hole with the key source video itself, for example, the
video from a character generator or logo.
~
Matte — fills the hole with a color, which can then be adjusted with the
Matte Menu .
•
Press
{
STATS
}
to display the Status Menu . Refer to the “ Status Menu ” section
on page 147 for details.
•
Press
{
EFX
}
to display the Image Effects Menu . Refer to the “ Image Effects
Menu ” section on page 153 for details.
•
Press
{
MATTE
}
to display the Matte Menu . Refer to the “ Matte Menu ” section on
page 159 for details.
•
Press
{
SIZE & POS
}
to display the Key Adjustment Menu . Refer to the “ Key
Adjustment Menu ” section on page 160 for details.
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A Color key is one in which the hole-cutting information is derived from a specific RGB
value — including luminance.
The following Key Menu functions are provided when Color key is selected:
•
Red Color — adjusts the red component of the selected key color, from 0 to 1024.
•
Green Color — adjusts the green component of the key color, from 0 to 1024.
•
Blue Color — adjusts the blue component of the key color, from 0 to 1024.
•
Red Threshold — adjusts the key’s clip along the Cyan vector (as demonstrated
using a CIE color chip chart).
Note Luma keys can be selected on both the Layer A and Layer B
keyers, in both Split and Mix modes.
Note
Color keys can be selected on both the Layer A and Layer B
keyers, in both Split and Mix modes.