Specifications

DigitalSpot 5000 DT
66
8. To execute the picture merging ,run the same gobo/video on all six fixtures and set the channels Global Effect 1-
Parameter 3 to a DMX value of 0-130.
Note: In order to assure a correct playback of videos sequences , all fixtures in the picture merging system should
be synchronized to the one (master) fixture - see the chapter bellow.
24. Pre-cut content mode for Picture Merging
The mode is useful when you want to cover large projection area with full resolution for each projector or
you don't want to be restricted with limits of matrix configuration.
The basic idea is that before projection you have to prepare the pre-cut content (e.g. picture) and upload the
single parts of the splitted source picture into individual fixtures.
Source picture Pre-cut pictures for matrix 3x1 (with overlapping edges)
Resolution: 1024x768 pixels 366x768 366x768 366x768
Single segments of the source picture must have the same size (pixels) which is given by:
L
partX
= L
totalX
/[x-(b/100)*(x-1)] …………. Size of the single segment in X-axis
L
partY
= L
totalY
/[y-(b/100)*(y-1)] …………. Size of the single segment in Y-axis
where
L
partX
= size (pixels) of picture segment in X-axis L
partY
= size (pixels) of picture segment in Y-axis
L
totalX
= total size (pixels) of the source picture in X-axis L
totalY
= total size (pixels) of the source picture in Y-axis
x = number of picture segments in X-axis y = number of picture segments in Y-axis
b = size of overlapping edges in %
Positions at which single picture segments start in the source picture are given by:
L
posX
= (N
x
-1)* L
partX
*[1.0-(b/100)] ………Position in X-axis
L
posY
= (N
Y
-1)* L
partY
*[1.0-(b/100)] ………Position in Y-axis
where
L
posX
= position (pixels) at which segment starts in X-axis
L
posY
= position (pixels) at which segment starts in Y-axis
N
x
= order of the fixture image in X-axis (figured from the left side of the source picture)
N
Y
= order of the fixture image in Y-axis (figured from the bottom side of the source picture)
b = size of overlapping edges in %
The pre-cut content mode has several advantages compared to the standard picture merging:
-unlimited size of the image field configuration matrix
-allows full resolution of every matrix element
- less loading of fixtures ´graphics engines
But the time for preparing pictures and calculation of the overlapping edges has to be taken into account.
There is an example of calculation of needed points in the source fixture for the image stated above.