Matrox MXO2 Installation And User Manual page 141

Allows you to see a graphical representation of your changes
Graphical
$
when you adjust the luma mapping settings. You can also modify the
luminance of your clip directly within the graph. For more information,
see "Using the luma mapping graph"
Numerical Lets you adjust your luma mapping settings numerically by
$
entering values in the text boxes, or by dragging the corresponding sliders.
Input Levels (Black
•
your clip's brightness and contrast by changing the luminance value
that represents black, white, or gray. Doing so expands or compresses
the range of luminance levels in your clip, which increases or decreases
your clip's tonal range.
For example, by increasing the black value, you set black in your clip
to a higher luminance value, which compresses the luminance range
and darkens your clip proportionally.
Output Levels (Black
•
values under Input Levels to any level of black and white. You can
reduce contrast in your clip, or reverse the luminosity of your clip by
setting black to a higher value than white.
Use this to adjust the midtones in your clip without
Gamma
•
adjusting black or white.
• Mask Allows you to apply a mask to your effect. For more information,
see "Applying a mask to your Matrox effects"
• Selective Key The selective key settings allow you to apply the color
correction effect to a specific range of pixels in your clip. Performing a
selective key is similar to performing a chroma or luma key, however, with a
selective key you are applying color correction to the keyed area instead of
transparency. For example, if you use the selective key properties to select
red as your Hue color, the color correction will be applied to the red regions
in your clip. You can enable each keyer ( Hue , Saturation , and Luma )
individually, or enable all three at the same time to get the desired results.
Graphical Allows you to see a graphical representation of your changes
$
when you adjust the selective key Numerical settings. You can also
modify the settings directly within the graph and perform an auto key. For
more information, see
Numerical Lets you adjust your key settings numerically by entering
$
values in the text boxes, or by dragging the corresponding sliders.
Hue Key This type of key lets you select areas to be keyed (affected
•
by the color correction) based on their hue.
Enable
$
indicator in the selective key graph.
and White)
and White) These controls let you map the
"Using the selective key graph"
Select this to enable the Hue Key properties and hue key
Creating a Matrox secondary color correction
on page 117.
These controls let you fine-tune
on page 102.
on page 124.
121