Apple Shake 4 New Features - Manual (Page 67)

Chapter 2 Major Features and New Nodes 67
AutoAlign Parameters
The AutoAlign node displays the following controls in the Parameters tab:
analyze
Click this button to perform the analysis that is the first step in aligning two or three
images. This analysis creates a preprocessed data set that is used to perform the actual
alignment. Images only have to be analyzed once, and the resulting transform data is
stored inside the Shake script. The other parameters in the node act upon this
transformation data—changing the parameters has no effect on the analysis data.
If, at any time, you’re not satisfied with the results of the analysis, you can change the
mode and re-analyze the analysisRange.
analysisRange
The range of frames you want to process. By default this parameter inherits the
maximum number of frames in the FileIn node at the top of the tree.
processedRange
A non-editable display field that shows the number of frames that have already been
analyzed. When you first create an AutoAlign node, this parameter reads “<empty>.”
Opening the processedRange subtree reveals the following subparameters:
• confidence: The confidence value indicates the level of matching accuracy that
resulted from the analysis. Each frame’s confidence is restricted to one of three
possible values. You can load the confidence parameter into the Curve Editor to
quickly find problem areas in the analysis. The values are:
• 1: Indicates an analysis in which Shake has high confidence. A keyframe has been
generated at these frames.