2017

4 Select a pixel within the spill in the Result image.
A red vertical bar appears in the hue spectrum identifying the colour to be shifted.
5 Click the colour pot next to the Hue button.
The colour picker appears.
6 Select or pick the colour you want to shift the spill to.
7 Use the cursor to move the points along the Suppression curve.
8 On the Hue Shift curve, drag the point closest to the plotted colour down to a value of 75, intersecting
the plotted colour.
The colour spill is shifted toward the Hue colour.
9 Continue modifying the shape of the curve until you are satisfied with the result.
Inverting a Matte
Use the Negative node to invert a matte. By inserting the Negative node between the Matte Edge and the
GMask nodes in the processing pipeline, the matte is automatically inverted. The Negative node has no
settings to configure.
To invert a matte:
1 From the Modular Keyer Node bin, drag the Negative node to the schematic.
2 Hold Shift and drag the Negative node to the Matte Edge node so their tabs touch and repeat for the
GMask node.
The Negative node is inserted to the schematic and your matte is inverted.
Adjusting the Front and Matte Luminance Curves
When you create a matte for the front clip, the Modular Keyer automatically creates a matte for the back
clip to specify which part of the back clip is used for the composite. By default, the back matte is the inverse
of the front matte.
You can adjust the luminance of the front matte and back matte separately in the Matte Curves menu. For
example, increase the luminance of the back matte so that more of the back clip shows through at the edges
of the key. This creates a better blend at the edges.
To adjust the luminance curves:
1 Click the Result node in the pipeline.
The Matte Curves menu appears.
712 | Chapter 16 Chroma Keying and Working with Green Screens