2008

There is also a Pseudo Alpha filter event on page 6641 .
Procedures
To use the Pseudo Alpha Compositor:
1 Add two Scene or Image Input events to the queue.
2 Select both events and assign an Image Layer event consisting of the
Pseudo Alpha Composite Filter.
Simple Additive Compositor
Rendering menu > Video Post > Video Post window > Make sure the two child
events are in the order you want the Image Layer event to use them. > Select
the two events. > Video Post toolbar > Add Image Layer Event > Choose Simple
Additive Compositor from the Layer Plug-in list.
Rendering menu > Video Post > Video Post window > Select a Simple Additive
Compositor. > Video Post toolbar > Edit Current Event
The Simple Additive compositor composites the two images using the second
image's intensity (HSV value) to determine transparency. Areas of full intensity
(255) are opaque; areas of zero intensity are transparent; and areas with
intermediate transparency are translucent.
Additive compositing
This layer event can be useful when the second image is a bitmap whose format
does not have an alpha channel.
There are no setup options for this compositor.
6710 | Chapter 20 Video Post