Ross Vision - Page 148

Ops 7–14 • Keying Vision Operator’s Manual (v12.0 MD)
› 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 Hue knob on the UltraChrome Menu 1-2 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 Reject knob on the UltraChrome Menu 1-2 to include or reject hues
adjacent to the base color as follows (Figure 7.8):
› 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.
Figure 7.8 UltraChrome Color Wheel — Effects of Clip, Hue, and Reject
4. Adjust the amount of background color that is spilling over into the foreground as
follows (green color cast on the foreground from a green screen for example):
• Press Spill Suppress on the UltraChrome Menu 1-2.
Spill Suppress — UltraChrome Menu 1-2
•Use the Range knob on the UltraChrome Menu 1-2 to remove any color cast onto
the foreground as follows:
R
M
Y
G
C
B
The Hue knob rotates
the selection around
the color wheel
The Reject knob expands
and contracts the range
of hues included in the
foreground
The Spill Supress knob
expands and contracts
the range of hues that
are corrected for
background color spill
The Clip knob includes
and removes varying
saturation levels of the
hue selection