User Manual

Table Of Contents
Multi-box: When selecting this filter, the Num Passes slider appears and lets you
control the quality. At 1 and 2 passes, results are identical to Box and Bartlett,
respectively. At 4 passes and above, results are usually as good as Gaussian, in less
time and with no edge “ringing.
Gaussian: The Gaussian filter uses a true Gaussian approximation and gives excellent
results, but it is a little slower than the other filters. In some cases, it can produce an
extremely slight edge “ringing” on floating-point pixels.
Soft Edge
Use the Soft Edge slider to blur (feather) the mask, using the selected filter. Higher values cause
the edge to fade off well beyond the boundaries of the mask. A value of 0.0 creates a crisp,
well-defined edge.
Paint Mode
Connecting a mask to the effect mask input displays the Paint mode menu. The Paint mode is
used to determine how the incoming mask for the effect mask input and the mask created in the
node are combined.
Merge: Merge is the default for all masks. The new mask is merged with the input mask.
Add: The mask’s values add to the input mask’s values.
Subtract: In the intersecting areas, the new mask values subtract from the
input mask’s values.
Minimum: Comparing the input mask’s values and the new mask displays the lowest
(minimum) value.
Maximum: Comparing the input mask’s values and the new mask displays the
highest (maximum) value.
Average: This calculates the average (half the sum) of the new mask and
the input mask.
Multiply: This multiplies the values of the input mask by the new mask’s values.
Replace: The new mask completely replaces the input mask wherever they intersect.
Areas that are zero (completely black) in the new mask do not affect the input mask.
Invert: Areas of the input mask that are covered by the new mask are inverted; white
becomes black and vice versa. Gray areas in the new mask are partially inverted.
Copy: This mode completely discards the input mask and uses the new
mask for all values.
Ignore: This mode completely discards the new mask and uses the input
mask for all values.
Invert
Selecting this checkbox inverts the entire mask. Unlike the Invert Paint mode, this checkbox
affects all pixels, regardless of whether the new mask covers them.
Fit Input
This menu is used to select how the image source is treated if it does not fit the dimensions of
the generated mask.
Chapter – 97 Mask Nodes 2101