High End Systems DL.2 - Manual (Page 140)

CHAPTER 11
Global Functions
118 DL.2 Digital Light User Manual
Keystone Correction Parameters
When you output an image from a
projector at an angle, the image
may appear skewed. Eight
Keystone parameters
Top
Top Left X Top Right X
Top
Bottom
Right Y
Bottom Right X Bottom Left X
Bottom
Left Y
Right Y
Left Y
Original Content
adjust the
image shape and compensate for
this effect. You can control each of
the four corners of the graphics
output to reshape your image to a
form that projects correctly.
Default DMX Value: 0 = no
keystone correction has been
applied
Each corner has an x and a y
value that adjust and correct scale of the projection from any corner toward the image center
on that axis.
Setting all Keystone X and Y parameters DMX values to zero will place the four corners of the
image at the four corners of the projector output. Adjusting keystone x values toward 255
(100%) moves the respective corner x positions horizontally toward the center of that image
edge. Adjusting keystone y values toward 255 (100%) causes the respective corner y positions
to be moved vertically toward the center of that edge of the image.
Tip: These parameters can also be used to create interesting skewing as a design effect.
Keystone Top Left X DMX value = 85
Keystone Top Left Y DMX value = 85
Keystone Top Right X DMX value = 85
Keystone Top Right Y DMX value = 85
Keystone Top Right Y DMX value = 170
All other Keystone parameter DMX values = 255