Sony MKS-2010 User Manual Page 107

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Chapter 6 Advanced Operations
107Advanced Key Operations
To make adjustments with color cancel
If the foreground image includes shades of the background
color, turn this function on to remove the color from the
foreground image.
1
In the Key >M/E Key1 >Chroma Key menu, turn [Key
Active] off, and turn [Color Cancel] on.
2
Set the following parameters with the knobs.
a) Set to 1 for through processing, with no filter applied. The filter
becomes stronger as larger numbers are specified
3
Turn [Key Active] on.
The video composed with chroma key reappears on
the monitor.
Adjusting the key signal for color cancel
When color cancel is on, you can adjust the key signal for
color cancel.
1
In the Key >M/E Key1 >Chroma Key menu, press
[Cancel Key], turning it on.
The color cancel function is turned on.
2
Set the following parameters with the knobs.
3
Make the following settings as required.
Adjusting the color cancel key window (range of
matching colors)
1
In the Key >M/E Key1 >Chroma Key menu, press [CC
Window], turning it on.
2
Set the following parameters with the knobs.
a) See the figure in “To adjust the window.”
Setting the color cancel key edge positions
1
In the Key >M/E Key1 >Chroma Key menu, press [CC
Key Pos], turning it on.
2
Set the following parameters with the knobs.
Adjusting the ratio of Y balance added to a color
cancel key
For the Y balance function, see “To adjust the Y balance”
(page 108).
By using the Y balance function on a color cancel key,
colors of the same hue as the background (typically blue)
can be output in the foreground without being cancelled.
1
In the Key >M/E Key1 >Chroma Key menu, press [CC
Y Balance], turning it on.
2
Set the following parameter with the knob.
To adjust the window
Chroma keying generates a key signal based on a
particular color (reference color) in the foreground
(typically a plain blue background). The “window” refers
to the range of colors which are regarded as matching this
specified reference color to create the key signal.
As seen on a vectorscope, the range for this matching
corresponds to a truncated sector (see the following
figure). This range is specified by two parameters: the
“Angle” parameter, which determines the range of the hue
parameter, and the “Crop” parameter, which determines
the degree of truncation.
Knob Description Setting values
1 (Lum) Luminance 0.00 to 100.00
2 (Sat) Saturation 0.00 to 100.00
3 (Hue) Hue 359.99 to 0.00
4 (Filter) Filter coefficient
1 to 9
a)
Knob Description Setting values
1 (Clip) Reference level
of color cancel
key
0.00 to 100.00
2 (Gain) Key gain –100.00 to +100.00
Knob Description Setting values
1 (Crop)
Crop value
a)
100.00 to 0.00
2 (Angle)
Angle value
a)
180.00 to 0.00
Knob Description Setting values
1 (Left Pos) Move the left edge of
the color cancel key.
–3.00 to +3.00
2 (Right Pos) Move the right edge
of the color cancel
key.
–3.00 to +3.00
3 (H Phase) Horizontal position of
the color cancel key.
Left Pos value
shown
Knob Description Setting values
1 (Mixture) Y balance key ratio 0.00 to 100.00
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