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KayakDD - Digital Production Switcher
3.6.5
Automatic Key Adjustment
3.6.5.1 Auto
The
Auto
button serves to start various automatic functions in the different key modes.
•
In
Add Key
, the key control is switched to 1:1 transfer so that key signals e.g.
from the caption generator are effective without change.
•
In
Luminance Key
, clip and gain are adjusted so that the key source signal is
amplified to become a full-range signal with minimum of 0% and maximum of
100%.
•
In
Linear Key
clip and gain are set to unity.
•
In
Chroma Key
, the
Auto
button starts an automatic key adjustment.
NOTE! After all automatic key adjustments, the corresponding parameters
may still be changed manually.
3.6.5.2 Automatic
ChromaKey
Adjustment
The first step of setting up most chroma keys is to use Auto Setup. Auto Setup
automates the first steps to achieving a chroma key. Auto Setup performs the
following:
•
Calculates primary suppression Hue and Luminance.
•
Sets primary suppression Selectivity and Chroma to defaults.
•
Calculates Clip Low, and sets Clip Hi to default.
•
Sets all the secondary suppression values to duplicate the primary
suppression values, but turns secondary suppression off.
•
Changes Opacity temporarily to 100% to permit an accurate backing color
sample, and then returns it to its original setting.
•
Sets Key Position and Size values to default (0).
Two different Auto Setup algorithms are available, one for well designed and lighted
sets (
FGD Fade
off), and the other for more challenging sets (
FGD Fade
on).
Depending on individual circumstances, additional manual adjustments may be
required after you use Auto Setup.
After an Auto Setup has been initiated by pressing the
Cursor button,
you can cancel
it by pressing the
Cursor button
again, but the chroma key will retain the default
settings imposed.
If the result of the Auto Setup is not satisfactory, further fine tuning can be made in the
chromakey menu.
User Manual
87
Summary of Contents for GRASS VALLEY KayakDD-1
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