Apple Shake 4 - Manual (Page 742)

742 Chapter 25 Image Tracking, Stabilization, and SmoothCam
refFrame
The reference frame that is used to calculate the null state of the transformation. For
example, scale has a value of 1 and rotate has a value of 0 at the reference frame.
outputType
A pop-up menu that lets you choose the compositing operation used to combine the
foreground element you’re adding to the scene against the background that you’re
tracking. Each menu option follows the standard Shake operator of the same name. To
pass on a tracked foreground without compositing, select Foreground. You can also use
this when modifying the foreground corner points, as the FG/BG button on the Viewer
shelf switches this setting.
clipMode
Selects the output resolution of the node from the Background (1) or the
Foreground (0).
applyScale
Opening the applyScale parameter reveals the scale parameter. In two-point mode, the
toggle control next to the scale slider toggles scaling of the foreground on and off.
Under this parameter is a subparameter that returns the actual scaling and rotation
value used in the transformation. You have the option to view the live calculated curve,
or to bake the curve to create editable data (keyframes).
scale
A slider that determines the calculated scale for two-point matching. The scale at the
refFrame is equal to 1, and all other frames are in reference to that frame.
applyRotate
Opening the applyRotate parameter reveals the rotate parameter. In two-point mode,
the toggle control next to the scale slider toggles rotation of the foreground on and off.
You have the option to view the live calculated curve, or to bake the curve to create
editable data (keyframes).
rotate
A slider that determines the calculated rotation for two-point matching. The angle at
the refFrame is equal to 0, and all other frames are calculated with reference to that
frame.
subPixelResolution
The resolution of your track. The smaller the number, the more precise and slower your
tracking. Possible values include:
• 1: Area is sampled at every pixel. Not very accurate or smooth, but very fast.
• 1/4: Area is sampled at every .25 pixels (16 times more than with a sampling of 1).
• 1/16: Area is sampled at every .0625 pixels (256 times more than with a sampling of 1).