2011

context point A specific tool node you mark as the target for a Player view.
Context points are especially useful when you want to see how changes to a
tool node that precedes the node with a context point affect the context point.
corner pinning A technique used to pin the four corners of one static image
(usually) onto another static image.
cue marks High-level keyframe controls that let you associate a keyframe
with a mark. Instead of viewing a clip over and over again in order to evaluate
and record important timing points, you can view footage and add cue marks.
dependency graph A set of connected nodes consisting of one or more
inputs, an output, and any number of effects or compositing operations.
depth of field The range of acceptable focus in front of and behind the
primary focus setting. It is a function not only of the specific lens used but
also on the distance from the lens to the primary focal plane, and of the chosen
aperture. Larger apertures will narrow the depth of field, smaller apertures will
increase it.
Domain of Definition (DOD) A usually rectangular region that defines the
maximum boundaries of useful information in an image. Generally, everything
outside of the DOD will have a value of 0 in all channels of the image. The
DOD is usually determined automatically, as opposed to a Region of Interest.
See also Region of Interest.
expressions Mathematical formulas that let you control any parameter that
can be animated, such as translation, rotation, scaling, material, or texture.
Expresso calculator An extension of the standard calculator that allows you
to create expressions that generate values used in numerical fields.
external matte A matte taken from another clip. See also matte, garbage
matte, static matte and traveling matte.
garbage mask Garbage masks can key undesired elements in an image and
to do rotoscope work. A garbage mask affects the image's alpha channel, which
is where the transparency information is stored. You can use a mask to create
the alpha channel, or you can use a mask to add to an alpha channel.
garbage matte A rough simple matte that you create in an image's alpha
channel that isolates unwanted elements from the primary element in an
image. Garbage mattes are also referred to as garbage masks. See also matte,
external matte, static matte, and traveling matte.
hue A specific color from the color spectrum, disregarding its saturation or
value.
880 | Appendix E Glossary