Datavideo DVK-400, Инструкция по эксплуатации

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5.4 More Applications of Garbage and Holdout Masks
In this section, we will show you more examples of using garbage and holdout masks in a
chromakey.
Example 1
Please note that in this example, the Invert option should be turned OFF for both Garbage and
Holdout masks.
As shown in the following diagram, there are issues in the foreground image such as (1) the screen
edges, (2) a lighting stand and (3) green components in the TV image.
To solve these issues, we will need a garbage mask to remove the screen edges and the light stand
and cover the TV with a holdout mask to ensure that the TV area is not keyed. As shown in the
diagram below, rectangle 1 is the transparent area defined by the garbage mask and rectangle 2 is
the holdout mask covering the TV. See
Sections 5.2 and 5.3 for instructions on how you can
activate the two masks on the foreground.