Ross Synergy 100 MD, Руководство оператора

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Synergy 100 MD Operator’s Manual (v7.2 MD-S100) Keying • 7–3
1. Key Type Section
The Key Type Section provides four buttons that select the type of Key that will be
inserted over the background video.
• Press
SELF KEY
to select a “Self” Key type, also known as a luminance Key. With
a Self Key, the luminance (or brightness) values of the Key source itself (as selected
on the
Key Bus ) are used to cut the hole.
The Key hole is filled with the same video signal as the Key cutter. The Key hole
can also be filled with color matte. Self Keys are often used to Key images from
tape as there is no separate alpha available.
• Press
AUTO SELECT
to choose an “Auto Select” Key type, also known as a
linear Key.
With Auto Select Keys, two signals are used to cut and fill the hole, a Key (alpha)
signal and a fill (video) signal. These signals originate from devices such as
character generators, still stores, DVEs, and graphics systems.
When you choose an Auto Select Key and press a Key source (on the Key Bus ), the
switcher automatically selects both the alpha and fill signals. These signals were
linked together during the installation procedure. Refer to Chapter 7, “ BNC
Configuration and Check ” in the Synergy 100 MD Engineering Manual for
details.
• Press
CHROMA KEY
to select an UltraChrome™ Chroma Key type. With a
Chroma Key, the hole is cut based on a selected color value (hue) rather than on a
luminance value or an alpha signal. The color is then electronically removed and
replaced with background video from another image.
Similar to Self Keys, the Chroma Key hole is filled from the
same video source as
the Key cutter, except that the fill is composed of all colors that remain after the
selected Chroma Key color is removed. The hole can also be filled with color matte.
Chroma Keys are typically used to Key the weathercaster over a weather map.
• Press
PST PATT
to select a “Preset Pattern” Key type. With a Preset Pattern Key,
the hole is cut based on a pattern that you select in the Effects Control Group . The
pattern (which acts just like the alpha signal for an auto select Key) is filled with
video from the Key Bus .
Note Unlike analog switchers that require separate RGB signals to perform a
Chroma Key, with the
Synergy 100 MD switcher, you can Chroma
Key on any source that you select on the Key Bus .
Operating
Tip
Pressing the button that is currently lit in the Key Type Section is a
quick way to activate a Keyer for adjustment, when both Keyers are in
use.
Note If you have the Squeeze & Tease MD Option installed, this action
will automatically turn on the FLY KEY button (in the Key Modifier
Section), and apply a 3-D box effect to the Key.
SELF
KEY
AUTO
SELECT
CHROMA
KEY
PST
PATT