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7. Advanced
7.8.5.4
Black level
Overview
•
•
•
7.8.5.4.1
Introduction
Brightness uniformity
In a multi channel system the brightness can vary over the different channels/projectors. The brightness level can be matched using
:
1.
CLO: in this case the light power is matched over the different projectors, see
CLO
in the
Lamps
section
2.
Black level : this will act on the brightness of the “black” color of the image part situated outside the soft edge zones.
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 7-137
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.
R59770330 SIM 7QP SERIES 08/12/2014
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Summary of Contents for SIM 7QP HB
Page 8: ...Table of contents 4 R59770330 SIM 7QP SERIES 08 12 2014...
Page 12: ...1 Introduction 8 R59770330 SIM 7QP SERIES 08 12 2014...
Page 38: ...4 Installation 34 R59770330 SIM 7QP SERIES 08 12 2014...
Page 52: ...5 Setup 48 R59770330 SIM 7QP SERIES 08 12 2014...
Page 82: ...7 Advanced Image 7 50 Image 7 51 Image 7 52 78 R59770330 SIM 7QP SERIES 08 12 2014...
Page 139: ...7 Advanced Image 7 157 R59770330 SIM 7QP SERIES 08 12 2014 135...
Page 168: ...7 Advanced 164 R59770330 SIM 7QP SERIES 08 12 2014...
Page 182: ...8 Maintenance 178 R59770330 SIM 7QP SERIES 08 12 2014...
Page 188: ...10 Environmental information 184 R59770330 SIM 7QP SERIES 08 12 2014...
Page 194: ...C GLD alignment 190 R59770330 SIM 7QP SERIES 08 12 2014...
Page 198: ...D Image files 194 R59770330 SIM 7QP SERIES 08 12 2014...
Page 200: ...Glossary 196 R59770330 SIM 7QP SERIES 08 12 2014...
Page 204: ...Index 200 R59770330 SIM 7QP SERIES 08 12 2014...