Apple Shake 4 - Manual (Page 884)

884 Chapter 28 Filters
blurQuality
The amount of samples. A quality of 1, the maximum, is 64 samples.
mirror
Considers points beyond the center area if your amplitude is high enough when
enabled.
steps
The number of steps. The intensity of the control image is divided up X amount of
zones, with X equal to steps.
stepBlend
Controls the blending between the number of regions (see below). If you put this at 0,
each step has a constant blur value. If this is 1, there is a continuous blend between the
different regions.
controlChannel
The channel of the controlling image to use to control the amount of blur.
channels
The channels of the input image to blur.
invert
Inverts the controlChannel.
ISharpen
The ISharpen node is identical to the Sharpen node, except it uses a second control
image to set the amount of sharpening across the first image. Un-sharp masking is
used for the sharpening filter. This process blurs the image slightly, takes the difference
between the blurred result and the input image, and adds that back over the input
image. High values of x and yPixels (for example, greater than 3 percent of the image
size) return undesirable results. You can also use the sharpen filter in the Convolve
node, but ringing may result.
For an example of this process, see “ IBlur ” on page 879.
Parameters
This node displays the following controls in the Parameters tab:
percent
The amount of blend between the non-sharpened image (0) and the sharpened image
(100).
xPixels, yPixels
The amount of sharpening as described in pixels.