Vision Operator’s Manual (v12.0 MD) Keying • Ops 7–27
Key Masks
Three types of masks are available, Box masks, Utility Bus masks, and Pattern masks. All key
types can be masked, with the exception on Pattern masks, which cannot be applied to Preset
Pattern Keys.
All mask types are set up from the Mask Setup Menu. From this menu you can select the type of
mask you want to use, as well as adjusting various mask parameters.
Box Masks
The Box Mask uses a simple box shape to mask the key. The box mask can be adjusted for size
and location, but cannot be rotated.
Use the following procedure to apply a box mask to a key:
1. Press the MASK button on the Keyers Module.
2. Press Box Mask on the Mask Setup Menu.
Box Mask Menu
3. Toggle Mask on the Box Mask Menu to On to apply the mask to the selected Keyer.
4. Adjust the position and size of the mask as follows:
• Press Posn/Size on the Box Mask Menu.
• Use the knobs or positioner to adjust the position and size of the mask.
5. Adjust the shape of the mask as follows:
• Press Top/Left on the Box Mask Menu.
• Use the knobs or positioner to adjust the location of the top-left corner of the mask.
• Press Bottom/Right on the Box Mask Menu.
• Use the knobs or positioner to adjust the location of the bottom-right corner of the
mask.
6. Toggle Force on the Box Mask Menu to On to force the masked area of the image on
screen.
7. Toggle Invert on the Box Mask Menu to On to reverse the mask. The portion of the
image that was masked out is now visible, and the portion that was visible is masked.
This completes the procedure for applying a box mask to a key.
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