Matrox Axio LE Installation And User Manual page 154

132
•
¦ Note
•
Chapter 8, Setting Up Realtime Effects with Adobe Premiere Pro
Hue Use this to rotate the indicator around the perimeter of the color
$
spectrum so that you can select different hues (colors) on which to key.
Aperture Use this to widen or narrow the aperture of the indicator
$
to increase or decrease the range of colors on which you want to key.
Softness
$ Sets the amount of softness applied to the range of colors
specified in the aperture region.
Saturation Key This lets you select colors to be keyed (affected by
the color correction) based on their saturation value. Pale colors have a
low saturation value, while vivid colors have a high saturation value.
Enable Select this to enable the
$
saturation key indicator in the selective key graph.
Low Clip
Use this to select the lower saturation values to be keyed.
$
Low Gain
Use this to set the range of saturation values you want
$
to be partially affected based on the value set by the
As you increase the
affected by the color correction. If you decrease the
less pixels are partially affected.
A Low Gain setting of 100 provides the widest range for maximum
color correction. Alternately, a gain setting of 0 creates a key where
saturation values are either completely affected or left untouched. You
can think of the Low Gain
Untouched" range for keying the pale colors in your image.
High Gain
This control is similar to the
$
you use it to set the range of higher saturation values you want to be
partially affected based on the value set by the
High Gain
you increase the
by the color correction. If you decrease the
pixels are partially affected. You can think of the
as defining an "Untouched to Affected" range for keying the vivid
colors of your image.
High Clip
This control is similar to
$
select the higher saturation values to be keyed.
The values you can select using the
controls are dependent on the
vice versa. This prevents the low and high controls from keying on
the same values.
Luma Key This type of key lets you select areas to be keyed (affected
by the color correction) based on their luminance value.
Enable Select this to enable the
$
indicator in the selective key graph.
Saturation Key
Low Gain setting, more pixels are partially
control as defining an "Affected to
Low Gain
setting, less pixels are partially affected
Low Gain
High Clip
and
Luma Key properties and luma key
properties and
Low Clip control.
Low Gain
control,
setting, except
High Clip
control. As
High Gain
setting, more
High Gain control
, except you use it to
Low Clip and Low Gain
High Gain
controls, and