Grass Valley Kayak HD v.6.9.3 - Manual (Page 383)

Kayak — User Manual 383
Chroma Key Operating Notes
Secondary Color Suppression
Secondary color suppression is intended to improve the color of translu-
cent areas (e.g., glass or smoke) or fine detail near the edge of a foreground
subject (e.g., hair). These areas can be take on some of the backing color.
Much less secondary suppression will be needed than is used for primary
suppression, because the foreground color is only partially corrupted by
the backing color. Because there is a mixture of backing color and fore-
ground color, the secondary suppression Hue and the direction (Angle)
will be different from primary suppression. Primary suppression removes
the backing color, while secondary suppression corrects the color in trans-
lucent areas.
Note If FGD Fade has been applied, it is unlikely enough edge detail will remain to
use secondary color suppression.
1. Touch the Sec Suppress data pads and then touch the Sec Suppr. button to
activate this feature (Figure below).
Data Pad 1 contains Luma / Chroma / Angle
Data Pad 2 contains Hue and Selectivity
Figure 304. Sec Suppress Controls Part1, Luma / Chroma / Angle