User Manual

Table Of Contents
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, this displays the
lowest (minimum) value.
Maximum: Comparing the input mask’s values and the new mask, this 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.
Selection Point
The Selection Point is a pair of X and Y coordinates that determines where in the source image
the Wand mask derives its initial color sample. This control is also seen as a crosshair in the
viewers. The selection point can be positioned manually, connected to a tracker, path, or other
expressions.
Color Space
The Color Space button group determines the color space used when selecting the source
color for the mask. The Wand mask can operate in RGB, YUV, HLS, or LAB color spaces.
Channel
The Channel button group is used to select whether the color that is masked comes from all
three color channels of the image, the Alpha channel, or an individual channel only.
The exact labels of the buttons depend on the color space selected for the Wand mask
operation. If the color space is RGB, the options are R, G, or B. If YUV is the color space, the
options are Y, U, or V.
Chapter – 97 Mask Nodes 2133