8

Highlight Geometry 389
Edge highlights
Peri meter Alph a—Applies a highlight only to the
perimeter of an object based on its alpha channel.
Selec tin g this option highlights only the outside
of an object without any spill on the interior.
Whereas highlighting by Edge produces a spill
onto the object, Perimeter Alpha k eeps all of the
edges clean because it relies on the scene alpha
channel to derive it’s effec t.
Perimeter alpha highlights
Perimeter—Applies highlight effect only to the
perimeter of an object based on Edge inferencing.
Although not as precise as Perimeter Alpha, you
might need to use the Perimeter option at times
when the alpha channel is unavailable.
Perimeter highlights
Bright—Filtersthesourceobjectsbasedon
their brightness values. Only objects with a
brightness above the spinner setting are selected
and highlighted. This option can b e inverted by
clicking the I button next to the spinner. This
parameter can be animated.
Hue—Filtersthesourceobjectsbytheirhue.Select
the hue by clicking the color swatch next to the
spinner. You c an choose hue values from 0 to 255.
The spinner beside the Hue color swatch lets you
enter a variance level s o that the glow ca n find
several different hues in the same range as the
chosen color This parameter can be animated.
Highl ight G eometry
Video Post toolbar > Add Imag e Filter Event > Choose
Lens Effects Highlight from Filter Plug-In list > Setup >
Geometry tab
TheGeometrypaneliswhereyousettheinitial
rotationofthehighlightsaswellashowthe
elements are affected over t ime. The Geometry
panel consists of three areas: Effect, Vary, and
Rotate.