#Overlaying Graphics
18-Jan-94 07:38:21
Sb: #76863-#Overlaying Graphics
Fm: Fred W. Heidingsfelder 76556,744
To: Alex Karamanoglou 73162,2027
The answer Don gave will work if you are going to overlay in your own
computer, or one that has a targa+ board.
However, if you are planning to send these graphics off with a client
you may need to comply with the needs of an editing suite. Depending
on the editing suite you may want to supply the graphics on a blue
background but you may find more suites would prefer black. What
they will do is key out the color you use for the background and then
fill that area with the live video. Just like Don's method in the
Targa card.
Another method would require you to prepare a cut reel. A cut reel is simply a
pure white representation of what ever you created. This reel will be used to
cut the key hole for the graphics. You can think of the key hole as a cookie
cutter in the video which will be filled with your graphic. Usually this
method will be used if you have a full spectrum of colors in your graphic and
some detail would be missed by using the graphic image to do the cutting. It
is best to check with your client first.
Fred