Using Digital Fusion to Create a "Teleporter" Effect
6. Box select (marquee) the blue areas of the image in the Large
View to create a matte based on the images blue background.
The selection process is accumulative, so several selections
are possible. For a good view of the matte being created, drag
and drop the Ultra Key tool into the Small viewing area above
the controls. Change the channel being viewed in the Small View
to the Alpha channel. To do this, right click on the view and
select Display, then Alpha from the context menu.
7. To further adjust the matte, select (click) the Ultra Key
tools Image Controls tab. Drag the Spill Suppression slider
to the maximum amount. Select "Well Done" from the
Spill Method drop-down list. Finally enable (check) the Post
Multiply Image option. All these will cause the matte to be
improved and the blue to be removed from the image.
8. Using Windows NT Explorer, Drag and drop any file from the
Med_Back2 folder in the second Image CD, to the tile directly
below Loader 1. This will automatically add another Loader tool
to the flow, then load and sort all the files in the folder.
9. Drag the output of the UltraKey tool (red rectangle) over
the output of Loader 2. This will cause a Merge tool to be added
to the flow. The Merge tool is the heart of Digital Fusions
compositing capabilities. Additionally, the UltraKey tools
output is automatically connected to the Merges foreground
input and Loader 2s output is connected to the Merges
background input. This causes the soldiers image ("cut
out" by the UltraKey tool), to appear over top of the warehouse