Graphics Programs Reference
In-Depth Information
Layering with the Alpha Over node
Layering using the Alpha Over node can be performed by connecting a background
image to the upper
Image
socket and a foreground image to the lower
Image
socket
of the Alpha Over node, as shown in the following screenshot:
Fringe issue
When the resulting images from the Alpha Over and Mix layering techniques are
compared, a one-pixel dark line can be seen on the edge of the foreground content
in the Mix layering mode, but not seen in Alpha Over process. This is termed as
Fringe issue
, as shown in the following screenshot:
