46
Kayenne XL Package — User Manual
Section 2 — Concepts
down without affecting Gain, which is adjusted separately with its own
Gain control.
High Gain, Low Gain, and Unity Gain
A high gain key has a narrow range, creating harder key edges. A low gain
key has a wider range, creating softer key edges. Linear keys typically use
minimal gain (also called unity gain) to completely preserve the soft edges
of the keys (
Figure 9
). Note that the Kayak HD system also supports keys
that go below unity gain.
Figure 9. Keying Gain Values
On the this system, Gain has a percentage value. A Gain value of 50%
requires a luminance change of 50% of the distance between black and
white to produce a keying signal ranging from transparent to opaque. A
gain value of 100% (unity gain) uses the entire range between black and
white for this transparent to opaque transition. A gain value of 0% pro-
duces the hard key edges (a high gain key).
Clip Hi and Clip Lo
The Kayak HD system also supports a Clip Hi and Clip Lo mechanism.
With Clip Hi and Clip Lo, two thresholds are established. The upper
threshold specifies at what point video will be completely removed from
the background, and the lower threshold determines at what point back-
ground video will be retained completely intact.
Key Cut
Signal
Clip
Gain
0618_00_29
Clip Hi
Clip Lo
Summary of Contents for Kayenne XL Package
Page 82: ...82 Kayenne XL Package User Manual Section 2 Concepts ...
Page 264: ...264 Kayenne XL Package User Manual Section 4 Menu Overview ...
Page 275: ...Kayenne XL Package User Manual 275 Status Menu M E Mapping Submenu In Preparation ...
Page 285: ...Kayenne XL Package User Manual 285 Install Menu Figure 217 Install E Box Tally In Assign ...
Page 347: ...Kayenne XL Package User Manual 347 Config Menu Figure 282 Config Copy Simple Menu ...
Page 352: ...352 Kayenne XL Package User Manual Section 5 Menu Summaries Figure 285 Example ...
Page 434: ...434 Kayenne XL Package User Manual Section 5 Menu Summaries Figure 345 Chroma Key Main ...
Page 435: ...Kayenne XL Package User Manual 435 Key Menu Figure 346 Chroma Key Main Cursor ...
Page 437: ...Kayenne XL Package User Manual 437 Key Menu Figure 348 Chroma Key Suppression Cursor ...
Page 462: ...462 Kayenne XL Package User Manual Section 5 Menu Summaries ...
Page 487: ...Kayenne XL Package User Manual 487 RamRecorder Menu Figure 405 Export Dialog 2 ...
Page 509: ...Kayenne XL Package User Manual 509 Scaler Menu ...
Page 583: ...Kayenne XL Package User Manual 583 EMEM Menu Figure 472 EMEM Edit Insert Trigger Macro Number ...
Page 590: ...590 Kayenne XL Package User Manual Section 5 Menu Summaries ...
Page 618: ...618 Kayenne XL Package User Manual Glossary ...