Ross carbonite - Page 36

• 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 reections
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 rst, 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)