NewTek TriCaster Studio - Manual (Page 95)

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As mentioned above, TriCaster also brings precise signal monitoring with a field-accurate
Waveform monitor for monitoring both luminance and chrominance (Y/C), or to quickly check
just the brightness (Y). The Vectorscope helps to align each color bar in the proper graticule box.
Hint: TriCaster also provides a color bars image in the Pictures folder – supplying it from a DDR as
a ‘regulation’ display can make downstream color phase calibration easier – useful if you plan to
integrate the output of your TriCaster with other video sources using external equipment.
6.7 LIVEMATTE
LiveMatte is TriCaster’s powerful realtime keying system for live production. Keying has proved
a popular and powerful method of combining two images, superimposing on above another,
whether still images, video clips or live camera shots. The process involves revealing the
background image by eliminating a portion of the foreground image (effectively cutting a digital
‘keyhole’ in it.)
There are two popular means for determining what part of the foreground image will be treated
as transparent, and they are referred to as ‘lumakeying or ‘chromakeying.’ The first is based on
the foreground’s brightness (luminance) values, while the second depends on the color
(chrominance) values.
Figure 72