Barco XLM H25, Руководство пользователя

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6. Adjustment Mode
What can be done ?
It is possible to adjust the Z-order or layering scheme of the windows in relation to one another. The Z-value of the active window
can be changed so that the display order is changed.
Image 6-10
Z-order adjustment
How to change the Z-order of a window
1. Push the cursor key ↑ or ↓ to highlight
Z-order
. (menu 6-43)
2. Press ENTER to select.
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
Select with
↑
or
↓
then <ENTER>
<EXIT> to return
Menu 6-43
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 giant weather map. In actuality, the person is standing in front
of a blue or green background and their 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.
66 R5976690 XLM H25 03/09/2004