Vmatte Vmatte-HD HDL4.2, Руководство по эксплуатации

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Matte Generation
The
Matte Generation
panel is located in the
ChromaKey
feature tab and consists of the following controls:
Back Color – choose a blue or green screen color sample
Opened Angle – specify the color range for the blue or green screen that needs to be removed from the composite result
Noise Removal – remove noises that come from imperfect blue or green screen
Matte Density – preserve dark and bright objects
Transparency – uniformly adjust chroma matte so that a solid foreground may become transparent
Polarity – invert the final matte output without affecting the matte used in the compositing process
External Matte – remove unwanted foreground objects or create a third layer (see External Matte section)
Back Color
The
Back Color
represents a sample color of a blue or green screen. Colors that are similar to the
Back Color
in the foreground
input source are removed and replaced with the background in the composite output. Use one of the following methods to choose a
Back Color
:
Enter R, G, B values in the three text boxes
Click on the square color button and choose a color when a dialog appears
Click on the Pick button to choose a color from the foreground when a dialog appears. This usually produces the best results
for a nonstandard
Back Color
.
Pick from the Foreground
After clicking the
Pick
button, a dialog Pick Back Color appears. At the same time,
OutputA
switches to foreground automatically
so that the picking location and its associated color can be seen on an output monitor. To change the cursor location, move the
cursor in the large rectangular area, or enter the cursor location as integer values into X (horizontal) and Y (vertical) text boxes. The
color of the large rectangle reflects the foreground color detected at the cursor center.
How to Choose a Good Back Color
If the blue or green screen has washed-out areas, avoid picking in these areas. Instead, choose the most saturated colors as the
Back Color
. The most saturated color has the largest S(saturation) value, which can be found inside the red rectangle in the
above picture.
Close Dialog
After choosing a
Back Color
, click OK or Auto to close the dialog.
OK – set currently selected color as the
Back Color
without changing other settings
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