Grass Valley Kayenne v.3.0 - Manual (Page 53)

KAYENNE — User Manual53
Keying
In this case the shaped input is incorrectly shaped again, sometimes called
a double-multiply (
Figure 26 ).
Figure 26. Incorrect Keying with Shaped Input
When the DPM provides an unshaped video output but the key is pro-
cessed as though it were shaped, excessive luminance occurs where the key
fill video and key hole edges overlap, producing a white halo around the
key (
Figure 27 ).
Figure 27. Incorrect Key With White Halo
In this case the unshaped video fails to be shaped at all ( Figure 28 )
x
+ Invert
Background Key Hole in Background
Key Control
Shaping Circuit On
Doubly-Shaped
Video
Incorrect Key
with Dark Halo
0618_00_34
Shaped
Key Fill
x
Correct Key