Keystone Correction Parameters - High End Systems DLHD High Definition Digital Light User Manual

CHAPTER 11
Global Functions

Keystone Correction Parameters

When you output an image from a
projector at an angle, the image may
appear skewed. Eight Keystone
parameters 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 let you adjust and correct the 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 x corner positions horizontally toward the center of that image
edge. Adjusting keystone y values toward 255 (100%) adjusts the respective y corner positions
vertically toward the center of that edge of the image.
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
Other Keystone parameter DMX values = 255
NOTE: DL.3 fixtures have vertical lens shift capability that provides additional keystone
control. Engage lens shift with your DMX console in the Control Parameter of the
Motion Control fixture type.
94
Top Left X
Top
Left Y
Bottom
Left Y
Bottom Left X
Original Content
Keystone Top Left Y DMX value =128
Keystone Top Right X DMX value = 0
Keystone Bottom Left X DMX value = 239
Keystone Bottom Left X DMX value =0
Keystone Bottom Right Y DMX value = 2
Other Keystone parameter DMX values = 255
Top Right X
Top
Right Y
Bottom
Right Y
Bottom Right X
DLHD Digital Light User Manual