2017

4 Click a point to display its tangent handle and drag the handle to adjust the curve. Use other modes
in the Tools box to further adjust the curve, adding or deleting points or breaking tangent handles, as
needed.
Modifying the Edges of the Key
Use the Shrink, Erode, and Blur controls in the Matte Edge node in the schematic, to enhance the edge of
the keyed image.
To:Use:
Detect the edges of your matte and fine-tune the edges with tolerance controls. This is useful
for cleaning up difficult mattes.
Edges
Remove pixels from the edge of the matte. This control should not be used when the object
in the front clip has soft edges, such as hair.
Shrink
Blend the light and dark edges of the matte.Erode
Apply a softening filter to the edge of the matte. You can select either a Gaussian filter or Box
filter.
Blur
To access the Edge Matte controls:
1 Double-click the Matte Edge node in the schematic.
The Edge Matte controls appear.
To detect the edges of your matte:
1 In the Matte Edge menu, enable Edges.
The edges af your matte are detected and displayed in the viewer.
2 Fine-tune the edges by modifying the Min and Max fields (tolerance) and the Width field, which
determines the width, in number of pixels, of the detected edges.
To shrink the edge of the matte:
1 In the Matte Edge menu, enable Shrink.
2 Set a value in the Shrink Width field.
Refining Your Key | 707