![background image](http://html1.mh-extra.com/html/barco/r9040411/r9040411_user-manual_4242996165.webp)
5. Advanced
Internal black level versus Beta Planes
In the same way as for the soft edge adjustment (Internal vs Alpha planes) this black level adjustment can be
fi
xed
internally
by
using a dialog box or externally by uploading a user de
fi
ned
Beta plane
. This beta plane will contain the values for the brightness
offset
to be applied to the image.
Both methods will allow to compensate for the typical double brightness phenomenon in the soft edge zones by increasing the
brightness of the rest of the image.
channel 1
channel 1
Overlap zone (double brightness)
channel 1&2
pulled up
Image 5-200
Black level : double brightness compensation
It is worth noting however, that (internal) black level (via the dialog box) is to be used for simple linear soft
edge zones (like in the illustration above). Curved soft edge zone should be done using (external) beta planes.
The D-drive of the projector can only save 8 MB of compressed data of which approximately 2 MB is used for
image
fi
les, geometry
fi
les, factory backup data. This means that the total size of Alpha plane and Beta plane
should be less than 6 MB
The Black level adjustment has to be done for all the channels (projectors)
5.9.9.5.2
Internal black level
What can be done ?
Internal black level can be adjusted via the projector’s software using a dialog box. The dialog box allows to add an offset to the
black level of the image in the zones outside the soft edge zones. The range goes from 0 to 255.
R59770718 GALAXY NW SERIES 20/06/2013
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Summary of Contents for R9040411
Page 1: ...Galaxy NW series User guide R9040411 R9240411 R9040406 R9240406 R59770718 01 20 06 2013...
Page 10: ...Table of contents 4 R59770718 GALAXY NW SERIES 20 06 2013...
Page 14: ...1 General 8 R59770718 GALAXY NW SERIES 20 06 2013...
Page 56: ...4 Getting started 50 R59770718 GALAXY NW SERIES 20 06 2013...
Page 93: ...5 Advanced Image 5 70 Image 5 71 Image 5 72 R59770718 GALAXY NW SERIES 20 06 2013 87...
Page 192: ...6 Maintenance 186 R59770718 GALAXY NW SERIES 20 06 2013...