Tektronix 2200 Manual Do Utilizador

4-33

Chroma keying allows you to key out a particular color in a scene 
and replace it with new background video. A typical application 
is to position a reporter in front of a blue wall and set up a chroma 
key to replace the blue wall with a weather map. 

Given a well-lit and well-composed chroma key scene, the high-
quality chroma keyer used in the switcher can produce a clean 
and natural-looking key with smooth edges and realistic 
shadows, even when the chroma key scene contains smoke, glass, 
or liquids. 

Creating a chroma key is especially easy with the Chroma Key 
Auto Setup feature. This feature automatically sets up the key 
when you identify the background color. In addition, the Chroma 
Key Menu and submenus give you the ability to make many 
manual adjustments for fine tuning the key.