Barco BlendPRO-II Instruction Manual Page 157

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ScreenPRO-II Controller • Users 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 theStatus 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.
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