•
Spill Suppress
— Spill Suppression elements are
those pixels in the Foreground that have a
noticeable tint of the Background color. This
typically occurs around the edge of the foreground
subject as glow from the background blue-screen
or green-screen “spills” onto them.
•
Edge Softness
— Edge Softness lets you apply
varying degrees of softening to the Foreground
edges to help it blend in with the underlying
background image that it is being keyed over.
•
Luminance
— Luminance allows you to control
the overall brightness of Shadow, Translucency,
and Transition areas as well as partial reflections
to more closely match the Foreground brightness.
To Set Up a Chroma Key in Advanced Mode
The UltraChrome chroma key tries to automatically
adjust for the scene you are trying to chroma key. For
the best results, initialize the key first, and then identify
the areas where you need to adjust the key.
1.
Select the keyer that you want to set up an
Chroma Key on.
Note:
You can use the same procedure for a
MiniME
™
.
2.
Select the video signal, on the key bus, that you
want to use for the key.
3.
Press
CHR KEY
.
4.
Use the
Mode
knob to select
Adv
.
5.
Use the
Color
knob to select the color you want
to key out.
6.
Press the
Init
knob to initialize the chroma key.
Every time the key is initialized, the switcher
resets all the Chroma Key parameters to their
default settings.
7.
Press
NEXT
.
8.
Use the
Type
knob to select
Bkgd
.
9.
Use the
Cntrl
knob to select
NegHue
and use
the
Value
knob to adjust the range of hues that
are included in the Background, expanding
counter-clockwise around the color wheel.
10.
Use the
Cntrl
knob to select
PosHue
and use
the
Value
knob to adjust the range of hues that
are included in the Background, expanding
clockwise around the color wheel.
11.
Use the
Cntrl
knob to select
Sat
and use the
Value
knob to adjust the saturation range of the
background color.
•
Increasing the saturation range value includes
a wider range of saturation values to be
included in the background.
•
Decreasing the saturation range value
includes a narrower range of saturation values
to be included in the background.
12.
Use the
Type
knob to select
Edge
.
13.
Use the
Cntrl
knob to select
Sens
and use the
Value
knob to set the edge sensitivity.
•
Low
— Reduces the level of detail in the
edges of the chroma key as well as the overall
noise in the key image that can be the result
of certain lighting conditions or high detail
camera settings. This is the default setting.
•
High
— Include the maximum detail in the
edges of the chroma key.
14.
Use the
Cntrl
knob to select
Soft
and use the
Value
knob to add or remove edge softening of
the foreground image and alpha channel.
•
Increasing the softness value increases the
amount of softness applied to the foreground
edges and alpha channel.
•
Decreasing the softness value decreases the
amount of softness applied to the foreground
edges and alpha channel.
15.
Use the
Type
knob to select
Foregd
.
16.
Use the
Cntrl
knob to select
Clip
and use the
Value
knob to adjust the foreground clipping.
•
Increasing the clip value removes
lower-saturated colors from the Foreground
image.
•
Decreasing the clip value includes
lower-saturated colors in the Foreground
image.
17.
Use the
Cntrl
knob to select
Hue
and use the
Value
knob to select the central (base) color for
the foreground.
•
Increasing the hue value moves
counter-clockwise around the color wheel to
select a base color.
•
Decreasing the hue value moves clockwise
around the color wheel to select a base color.
18.
Use the
Cntrl
knob to select
Reject
and use the
Value
knob to include or reject hues adjacent to
the base color.
36
• Keying — Carbonite Operation Manual (v10.1)
