Operator`s manual

CrossOver 6 / 12 User Manual (v4.0) Basic Operation • 3–7
helps blend the foreground into the new
background.
• Translucency — Allows you to adjust the size
and transparency of translucent, or
semi-transparent, areas.
To adjust the chroma key in Basic Mode:
1. Select the key you wish to modify (ensure it is
set as a Chroma key).
2. Press NEXT.
3. Adjust the Background as follows:
•Use the Type knob to select Bkgd.
•Use the Cntrl knob to select Gain.
•Use the Value knob to adjust the
background gain as follows:
› Increasing the Gain value causes the
background to appear more opaque. This
results in less of the background color
being removed.
› Decreasing the Gain value causes the
background to appear more transparent.
This results in more of the background
color being removed.
4. Adjust the edges of the foreground as follows:
•Use the Type knob to select Edge.
•Use the Cntrl knob to select Soft.
•Use the Value knob to add or remove
edge softening of the foreground image and
alpha channel as follows:
› 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.
5. Adjust the Foreground colors, or hues, as
follows:
•Use the Type knob to select Foregd.
•Use the Cntrl knob to select Clip.
•Use the Value knob to adjust the
foreground clipping as follows:
› Increasing the Clip value removes
lower-saturated colors from the foreground
image.
› Decreasing the Clip value includes
lower-saturated colors in the foreground
image.
•Use the Cntrl knob to select Hue.
•Use the Value knob to select the central,
or base, color for the foreground as follows:
› 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.
•Use the Cntrl knob to select Reject.
•Use the Value knob to include or reject
hues adjacent to the base color as follows:
› Increasing the Reject value decreases the
amount of adjacent hues that are included
in the foreground.
› Decreasing the Reject value increases the
amount of adjacent hues that are included
in the foreground.
6. Adjust the amount of background color that is
spil
ling over into the foreground as follows
(green color cast on the foreground from a green
screen for example):
•Use the Type knob to select Spill.
•Use the Cntrl knob to select Range.
•Use the Value knob to remove any color
cast onto the foreground as follows:
› Increasing the Range value causes more of
the foreground colors to be corrected for
background color spill.
› Decreasing the Range value causes fewer
of the foreground colors to be corrected for
background color spill.
Advanced UltraChrome Mode Settings
The following chroma key parameters can be
adjusted in Advanced Mode:
An UltraChrome chroma key, in advanced mode,
breaks the image into five elements which determine,
or partially determine, which part of the image is
keyed out, or removed.
• Background — Background elements are those
pixels in the source video that are the same color
as the one you chose to key out. Note that the
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