Barco R9004460, Руководство пользователя

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6. Adjustment Mode
A bar scale will be displayed.
3. Use the ← or → key to move the slider.
The more the slider is to the left, the lower the z-value.
The more the slider is to the right, the higher the z-value.
Windows with a higher z-value is always displayed in front of a window with a lower z-value.
4. Press EXIT to return.
WINDOW ADJUSTMENT
SELECT SOURCE
SIZE
POSITION
Z-ORDER
COLOR KEY
ALPHA BLEND
NO SIGNAL COLOR
Select with
↑
or
↓
then <ENTER>
<EXIT> to return
Menu 6-48
6.5.6 Color Key
Color key
Sometimes also called chroma key. This is a method of combining two video images. An example of chroma keying in
action is the nightly news person standing in front of a weather map. In reality, the person is standing in front of a blue
or green background and the camera image is mixed with a computer-generated weather map. This is how it works:
a TV camera is pointed at the person and fed along with the image of the weather map into a box. Inside the box, a
decision is made. Wherever it sees the blue or green background, it displays the weather map. Otherwise, it shows
the person. So, whenever the person moves around, the box figures out where he is, and displays the appropriate
image.
6.5.6.1 Color Key activation
Example images of color keying
Take e.g. two image. One taken on a full color background and the other a normal image. The full color background will be replaced
by the second image via the principle of color keying.
Image 6-12
Zebra on a single color
Image 6-13
Full color image Image 6-14
Result image after color keying
Activating Color key
1. Push the cursor key ↑ or ↓ to highlight
Color Key
. (menu 6-49)
The Color key menu will be displayed. (menu 6-50)
2. Select
Status
.
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