Grass Valley DD35 Family v.3.1.5 User Manual
Page 201
3. Menu Operation
DD35 Production Switcher
3 – 49
Operating Instructions – Rev. 16 / 10.2001
Pressing the Auto button starts an automatic key adjustment to Blue.
The picture evaluation includes all those colors which are within an angle range of
+/–30
o
around the primary color Blue. Within this range, blue with the highest inten-
sity is detected as key color. Key color and selectivity are thus adjusted.
Switches the selected border.
Lum-equalized key modes can be set to non-equalized key mode. The FGD Fade
(foreground fade) key switches over the key procedure. Now, the cleaned key fill
signal and the background signal are faded in one fading operation by the key con-
trol signal.
These three functions are available in the Lum/Add key and FGD Fade modes,
not in the DynaChrome
t
.
Attention:
When selecting P/S/S in the DynaChrome
t
mode, the chromakey
procedure automatically switches to FG Fade (quality loss)! When se-
lecting P/S/S in the Lum Self Key mode, the fill linearization is auto-
matically omitted for the luminance key procedure (quality loss)!
All P/S/S parameters are stored in the key memory, independent of the key type.
With Reset, all P/S/S parameters are reset. When starting an automatic key adjust-
ment (AKA), all P/S/S parameters are switched to OFF, but will be preserved.
Positioning: The setting range amounts to +/ – 8 pixels with a smallest increment
of 1/8 subpixel. A positive Positioning shifts the key signal with regard to the fill sig-
nal to the right.
Sizing: The setting range amounts to +/ – 8 pixels with a smallest increment of 1/4
subpixel with all permitted key types. A positive sizing extends the key signal, thus
reducing the foreground objects. By this way, incorrect object edges can be re-
moved. However, foreground details will also disappear more and more.
A negative sizing increases the foreground object around the object edges. Dark
or key-colored object edges are added.
Softening: The key signal is filtered with an adjustability of 10 steps. Object edges
and details are softened.
For details refer to section Introduction.
Auto
Border
FGD Fade
P/S/S
Digits