12. Color calibration
12.2 Color gamut calibration
Color Gamut
Color Gamut is the entire range of reproducible colors by a particular device such as a projector. The entire range of reproducible
colors are typically de
fi
ned so that horizontal and vertical directions describe saturation and luminance changes, respectively. When
a color is "out of gamut," it is not possible to reach that color by the device.
520
560
540
580
600
620
700
500
490
480
470
460
380
x
y
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
1
Image 12-1
Sample Chromaticity Diagram with Color Gamut of target device (1).
Why apply color correction?
During the post-production process of a
fi
lm, a speci
fi
c color space is applied. This color space is the Target Color Gamut Data
(TCGD). All movie content operates under that gamut. To ensure that in the cinema theater the
fi
lm is projected within the same
color space as intended by the
fi
lm industry, the color space of the projector has to be corrected accordingly.
What has to be done?
The color coordinates for the projected primary colors must be measured on the screen. The values can be different than those
originally inside the projector due to re
fl
ection on the screen or due to the in
fl
uence of the glass between the projection booth and
the theatre and even the projected colors are different from setup to setup.
These measured color coordinates are references for the projector and will be entered so that the projector knows how its colors
are projected on the screen. This reference measurement (MCGD), together with the delivered gamut
fi
le (TCGD) of the
fi
lm will
introduce a color correction so that the
fi
lm will be projected with the desired color target.
x
y
G
t
C
t
Y
t
M
t
R
t
B
t
Image 12-2
Correction of native color gamut towards desired color gamut (electronic correction)
Electronic correction
The electronic correction adapt the native color gamut towards the desired (target) color gamut (e.g. DC28_DCI_Xenon.TCGD).
This correction is introduced by the DMD drivers and is also called ‘P7 correction’. The electronic correction takes place once the
MCGD
fi
le of the projector is mapped with the TCGD
fi
le of the
fi
lm.
R5906847 DP2K SLP SERIES 02/06/2017
115
Summary of Contents for DP2K SLP Series
Page 1: ...DP2K SLP Series User and Installation manual R5906847 00 02 06 2017 ...
Page 4: ......
Page 15: ...1 Safety PR RESTRICTED AREA RESTRICTED AREA Image 1 2 R5906847 DP2K SLP SERIES 02 06 2017 11 ...
Page 18: ...1 Safety 14 R5906847 DP2K SLP SERIES 02 06 2017 ...
Page 44: ...5 Lenses Lens selection 40 R5906847 DP2K SLP SERIES 02 06 2017 ...
Page 86: ...7 ICMP 82 R5906847 DP2K SLP SERIES 02 06 2017 ...
Page 96: ...9 Starting up 92 R5906847 DP2K SLP SERIES 02 06 2017 ...
Page 108: ...10 Scheimpflug 104 R5906847 DP2K SLP SERIES 02 06 2017 ...
Page 116: ...11 Convergence 112 R5906847 DP2K SLP SERIES 02 06 2017 ...
Page 124: ...13 Preventative maintenance actions 120 R5906847 DP2K SLP SERIES 02 06 2017 ...
Page 162: ...B Pin configurations 158 R5906847 DP2K SLP SERIES 02 06 2017 ...
Page 172: ...C Environmental information 168 R5906847 DP2K SLP SERIES 02 06 2017 ...
