12
Representation + Landscape
t ra c k i n g - 2 d f l at i mage tracking Tracking allows you to track the movement of an object
Make Null Layer
and then apply the tracking data for that movement to
A null object is an invisible layer that has all the
another object (such as another layer , text, or an effect
properties of a visible layer, so that it can be a parent to
control point) to create compositions in which images
any layer in the composition
and effects follow the motion.
>Layer >New
Feature Region defines the element in the layer to
>Null Object
be tracked.
>Edit Target
Search Region defines the area that After Effects
>Layer = Null 1
will search to locate the tracked feature. between
>Apply
frames. Attach point designates the place of attachment for
Create Text Layer
the target.
>Layer >New >Text
>select layer with film
>type text
>Window >Tracker
Link Text to Null Object
>click Track Motion in the window that has appeared
> Drag spiral icon (‘Parent & Link’) from Text layer to
on the bottom right
‘Null 1.’
>Layer panel will open, showing a set of Tracking
> Uncheck eye on ‘Null 1’ to make box invisible.
Regions. >Resize the centre Feature Region to enclose the
>enable Enhance Before Match
object to be tracked, and set the outer Search Region
>enable Subpixel Positioning
to be a few pixels larger. Hold Control to move the
>enable Adapt Feature on Every Frame
region corners and sides independently of each
>Click on the popup underneath to Continue
other.
Tracking
>In the middle of the Feature Region you will see a +
> click Play to Analyse in the Tracker Window
symbol, this is the Attach Point: the spot that will be used to define the Position value of a second layer, in this case, our text. Move it to a desired location. >Click on Options to optimize the tracking process >Set Channel to RGB >enable Enhance Before Match >enable Subpixel Positioning >enable Adapt Feature on Every Frame >Click on the popup underneath to Continue Tracking > click Play to Analyse in the Tracker Window
