7. Advanced
Applying a correction in a certain zone also in
fl
uences the adjacent zones.
The hierarchical levels are selected in a way that the
fi
rst hierarchy level in
fl
uences the entire transition from black to white (0% to
100%) with the main correction done at 25%. Below you can
fi
nd the table of the hierarchy levels and their in
fl
uence zone.
Hierarchy level (value 1–4)
Hierarchy level (%)
Gray level range
1
25.0%
0.0% - 100.0%
6.3%
0.0% - 25.0%
2
56.3%
25.0% - 100.0%
1.6%
0.0% - 6.3%
14.1%
3.6% - 25.0%
39.1%
25.0% - 56.3%
3
76.6%
56.3% -100.0%
0.4%
0.0% - 1.6%
3.5%
1.6% - 6.3%
9.8%
6.3% - 14.1%
19.1%
14.1% - 25.0%
31.6%
25.0% - 39.1%
47.3%
39.1% - 56.3%
66.0%
56.3% - 76.6%
4
87.9%
76.6% - 100.0%
The % values in the table indicate measurable brightness on the screen.
7.8.11.2 Illustrating the in
fl
uence of GLD correction
Illustrating GLD correction
Without performing GLD correction, we have a linear response
1
from black to white. This is shown as a green dashed line in the
graph below, where we the horizontal axis represents the signal strength (0% to 100%) and the vertical axis the intensity.
Linear response
Intensity
Signal
0
512
1024
0
25%
50%
75%
100%
Image 7-141
GLD: response curve
The following topics give you an overview of the outcome of the GLD corrections done at different levels.
1. To be fully correct, we will have the gamma response curve instead of a linear response curve. In this explanation, we consider it to be linear however.
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Страница 1: ...Barco SIM 7D User Guide R92112071 R92112072 R92112073 R59770198 10 13 02 2013 ...
Страница 8: ...Table of contents 4 R59770198 BARCO SIM 7D 13 02 2013 ...
Страница 10: ...1 Introduction 6 R59770198 BARCO SIM 7D 13 02 2013 ...
Страница 14: ...2 Packaging 10 R59770198 BARCO SIM 7D 13 02 2013 ...
Страница 39: ...4 Installation Image 4 40 Location of the IR receivers R59770198 BARCO SIM 7D 13 02 2013 35 ...
Страница 40: ...4 Installation 36 R59770198 BARCO SIM 7D 13 02 2013 ...
Страница 54: ...5 Setup 50 R59770198 BARCO SIM 7D 13 02 2013 ...
Страница 80: ...7 Advanced Image 7 41 Image 7 42 Image 7 43 76 R59770198 BARCO SIM 7D 13 02 2013 ...
Страница 108: ...7 Advanced Image 7 95 Image 7 96 Image 7 97 Image 7 98 104 R59770198 BARCO SIM 7D 13 02 2013 ...
Страница 154: ...7 Advanced 150 R59770198 BARCO SIM 7D 13 02 2013 ...
Страница 174: ...B GLD alignment 170 R59770198 BARCO SIM 7D 13 02 2013 ...
Страница 176: ...Glossary 172 R59770198 BARCO SIM 7D 13 02 2013 ...
Страница 182: ...List of tables 178 R59770198 BARCO SIM 7D 13 02 2013 ...