4
5
Uniform brightness and contrast
Accurate images for night and dusk training
Extended Contrast Ratio (ECR)
Dark night scenes typically deliver video signals
with reduced dynamic range and almost no
contrast.
Barco’s NVGV
IEW
system add-on enables
users wearing NVG devices to see bright,
properly-defined targets and images for
true training accuracy and realism.
NVGV
IEW
™ projection
By electronically enhancing these video signals
and dimming to rescale to full dynamic range,
Barco’s ECR greatly improves the contrast ratio
and picture quality.
Constant Light Output (CLO)
An integrated, calibrated light meter
measures and controls the light output.
•
New and used lamps can be mixed
•
Not all lamps need to be changed at
the same time
The xRACU allows for Linked CLO
, so
the brightness of all linked projectors is
monitored and adjusted to the lowest
value.
Contrast level independent from
dimming level. Black level and overlap
zones don’t change when changing
lamp bulbs.
Uniform dimming
•
Increased dynamic range (20:1)
•
Accurate dark images
•
Contrast level independent from
dimming level (black level and
Optical Soft Edge Matching do not
change when changing lamps)
Rescaled video signal
Original video signal of a night scene
64
grayscales
256
grayscales
IMPROVED CONTRAST
REDUCED CONTRAST
Channel with new lamp
After dimming
After CLO
Unbalanced system:
2000:1 contrast
on middle channel only
3-channel system with
new lamp on middle
channel:
non-uniform brightness
and contrast
Balanced Sim 5plus
system:
1000:1
constant contrast
on every channel
Constant contrast dimmer
Typical dimmer:
brighter in the center
of the image
Standard image: weak dynamic range
ECR delivers full dynamic night scenes.
Barco ECR uniform dimming:
maintains image quality
Photo courtesy Thales Training & Simulation
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