Chroma Key Masking - Sony DVS-7250 User Manual

Chroma Key Masking

If there are unwanted background "holes" in the chroma key image, you can
mask these areas off. For chroma key masking you can use the main and
subsidiary masks independently or simultaneously on the selected keyer
(KEY 1 or KEY 2). The following procedures are thus the same in both D1
and D2 systems.
1
In the CHROMA KEY menu, select item 4 (MASK).
The MASK menu appears.
OFF
4H
F1
2
Press F2 or F3 to select the mask type.
F2 (KEY MASK): key masking
F3 (BKGD MASK): background masking
3
Press one of F4 (BOX) to F6 (UTIL BUS), turning it on, to select the
mask source.
F4 (BOX): rectangular mask generated by the internal box generator
F5 (WIPE): wipe pattern from the wipe generator.
F6 (UTILTY BUS): signal selected on the utility bus.
MASK TYPE MASK SOURCE
BKGD
KEY
MASK BOX
MASK
4H
F2 F3 F4
Function key indications in the MASK menu
When you make this selection, make the wipe pattern selection and
modifier settings in the WIPE menu (see page 4-66) and then return
to the CHROMA KEY menu.
When you select a wipe pattern for masking, the EDGE and
DIRECTION modifier settings in the WIPE menu become invalid.
For example, to select the signal on the M/E-1 utility bus, press the
M/E-1 UTIL button in the auxiliary delegation section, and press the
cross-point button assigned to the required signal.
UTILITY MASK
INVERT
WIPE BUS
OFF
F5 F6 F7 F8
Chapter 5 Chroma Keying
F9 F10
(Continued)
5-13