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10 __________________________________________________________Barco - DCMS - User Manual
About DCMS
3
About DCMS
3.1
What is DCMS?
The Barco Display Consistency Management Software (DCMS) is a software tool
to calibrate displays in terms of luminance, gamma and gray tracking*. DCMS is
able to calibrate displays to a predefined set of parameters or match displays to
each other. The software uses a USB color sensor to measure color and
luminance.
The term Display Consistency applies to the consistency of color throughout the
The term Display Consistency applies to the consistency of color throughout the
gray scale and the consistency of color and luminance between multiple displays
of the same or different type.
*
Gray tracking means that the color of every gray level from black to white is
constant, and equal to the white point target. In practice, because of LCD
limitations, this holds for gray levels higher than 20% drive.
3.2
Why using DCMS?
Because of spread in backlight, color filter and liquid crystal properties, all LCDs
have different native white points and gamma. The same user settings will
effectively produce different images, visible when the displays are put next to
each other. Appropriate calibration can solve this by matching the luminances,
gammas and white points.
This calibration requirement is general for all markets that use tiled LCD
This calibration requirement is general for all markets that use tiled LCD
displays. More specifically, broadcasters must be able to trust the color they are
seeing, so as good as possible absolute calibration (to an absolute, defined
target) is also necessary. This is a matter of cost – used sensor, bit-depth of
display and electronics, cost of color correction software and cross-talk removal,
spread of color filters etc.
DCMS consists of software and sensor performing the given calibration.
DCMS consists of software and sensor performing the given calibration.