Variable Edge Blending; Mapping A Collage To A Spherical Surface - High End Systems DML-1200 User Manual

W/axon
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Global Functions
3.
On all the media servers you are configuring, set Modifier 1 DMX value = 1 to activate the array options. The selection grid
will not appear until the first modifier is set above 0
4.
On all the media servers you are configuring, set Modifier 3 DMX value = 255 (100%) to display the selection grid.
5.
On all the media servers you are configuring, increase Modifier 1 to a value between 1 and 127 to select a Collage array
configuration.
6.
On each individual server, set Modifier 2 DMX value between 1-127 (the range depending on the value selected in Step 5) to
select which grid cell that media server will project.
7.
Use Position, Keystone and Ratio parameters to align the projections of the individual media servers in such a way that there
is some overlap between the separate portions of the image. This overlap is needed for blending adjustment.
8.
Set Modifier 3 to a DMX value between 192 and 199 to define a hard edge for alignment. Readjust Position, Keystone and
Ratio parameters to bring Collage elements into good alignment.
9.
Increase the Modifier 3 DMX value = 203-207 to blend the overlap between the outputs. Readjust Position, Keystone and
Ratio parameters to bring Collage elements to fine tune alignment.
10. On all the media servers you are configuring, set the Global Effect Mode Modifier 3 parameter to a DMX value to the default
range of 0-127 (with edge blending) or between 128-143 (without edge blending) to put the media server output into their
cropped Collage state. The choice between the two values will depend on your preference for aligning the images.
Execute the panorama Collage:
1.
Create a setup cue that identifies the content media file and folder, sets the Play Mode parameter to
Frame
(DMX = 5) and the Opacity to 0 for the same graphic object on all units you are configuring for the panorama.
2.
For this example, follow with a cue that sets the Play Mode parameter of
Opacity to 100% for the same graphic object on all units you are configuring for the panorama.

4.12.4 Variable Edge Blending

Variable Edge Blending is used in conjunction with any of the Collage Generator Modes and allows for on-the-fly adjustment of
blend overlap between projectors. Using this mode gives more flexibility for sizing a collage to a given screen or projection
surface, as well as smoother blending if wider blend regions are used.
The Variable Edge Blend adjustment allows for blend region adjustments from 0% (hard edge) up to 50% of the image size.
Horizontal and vertical blend regions can be controlled independently of one another.
Variable Edge Blend is turned on by setting the Viewpoint Mode parameter to a value of 128. When variable edge blend is used,
the view point mode will default to spherical universe and cannot be changed. The view point position modifiers then become the
modifiers used for adjustment of the blend region sizes.
When active, the Viewpoint modifiers function as follows:
Modifier 1 (Viewpoint X Position): Horizontal blend width adjustment (Vertical Edges) from 0 = no adjustment to 255 = a maximum
overlap of 50%.
Modifier 2 (Viewpoint Y Position): Vertical blend width adjustment (Horizontal Edges) from 0 = no adjustment to 255 = a maximum
overlap of 50%.
Modifier 3 (View Point Z Position): Not used.
Because both Modifier 1 and Modifier 2 default to 32768 when they are used as Viewpoint Position modifiers, they will default to
the same when Variable Edge Blend is activated. With this value, the blend regions are set to approximately 25% overlap.
When Variable Edge Blend is used, all of the servers in the collage must be set to the same vertical and horizontal
blend overlap values. If this is not done, the collage will not align properly.
Setting up Variable Edge Blending:
1.
Select one of the collage modes available in the Global Effects
2.
Using the collage modifiers, select the collage size for your application, and assign each unit it's place in the collage
3.
Set the Viewpoint Mode channel to a value of 128. This will activate the Variable Edge Blending
4.
Using the Viewpoint Position X and Y modifiers, adjust the blend region width to the desired value. All units in the collage
must have the same X and Y values or the collage will not align properly.
5.
Align the collage using the keystone parameters, (see

4.12.5 Mapping a Collage to a Spherical Surface

The Spherical Mapping effect takes the normal rectangular output and wraps it on a selected portion of a sphere. This is the same
as wrapping a flat map on to a globe. The horizontal position of a point is its longitude. The vertical position of a point is its
latitude. For a detailed description of this effect, see
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51
Play Loop Forward
Keystone Correction Parameters
Spherical Mapping
on page 91.
DML-1200 w/Axon Embedded Graphic Engine 24/12/2010
Pause and Rewind to In
(DMX = 0) and brings up the
on page 40).

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