Datavideo HS-3200, Инструкция по эксплуатации

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4. Select Key 1.
5. In the Keyer Ctrl option, select “ Luma ” and “ Self ” to apply luma keying effect to the
connected input. The luma key removes the background, in this case, the black
component of the image.
6. In this example, the text image is against a black background so reduce the Lift value to
remove the black background . Descriptions of the corresponding parameters are
described below:

Lift (0 – 100%) adjusts the dark/black areas of the key image. Reducing the value of
Lift will make dark areas of the key image more transparent. The background image
will be showing only through the transparent areas.

Gain (0.0 – 16.0) adjusts the light/white areas of the key image. Increasing the value
of Gain will make light areas of the key image more solid. The background image will
be showing only through the transparent areas.

Opac (0 – 100%) adjusts the transparency of the overall foreground image, which is
the text in this example. Increasing the value of Opacity will make the overall key
image less transparent.

Invert (On/Off) sets the luma key color; luma key color is white if turned ON and
black if turned OFF.
7. Set the “ Lift ” to 100% if the background is in total black.
8. Opaque logo can be created by setting the “ Opac ” parameter to 100%. Set “ Opac ” to
100% if an opaque logo is desired. Semi-transparency effect can be generated by setting
the “ Opac ” parameter to a value between 0 and 100%.
9. Under the Source option, select an input source to which the luma key settings will be
applied. In this example, select “ Input 9 ” since this is the port to which the laptop is
connected.
Note: Since “Self” is chosen, Fill input will be ignored.
10. Exit the menu after the luma key settings are properly configured.
11. Press the Key 1 PGM or Key 1 PVW button to place the text image on the Program
screen or the Preview screen respectively.
Luma
Keying