Brompton Technology Tessera M2 - Chapter 12 - On-Screen Colour Adjustment (OSCA); Understanding OSCA and Display Options

- 110 -
Chapter 12 - On-Screen Colour Adjustment
On-Screen Colour Adjustment (OSCA)
Tessera processors feature comprehensive fixture-based seam adjustment for fixture and
module seams and 7 way colour correction for modules and panels.
High pixel pitch fixtures require absolute mechanical precision when connecting to adjacent
panels. However, due to mechanical design tolerances many higher pixel pitch fixtures have
issues lining up precisely with adjacent fixtures, or can even have slight mechanical
misalignment issues between the LEDmodules that make up the fixture. This can give rise to
the appearance of perceived bright or dark lines at the seams of fixtures or modules. This
can be particularly noticeable when viewing certain kinds of content or solid colours, and
appears as bright or dark seams between adjacent panels. One technique to help ameliorate
this is to adjust the luminance of the pixels at fixtures' seams, either on a fixture basis, if
there is an issue between adjacent panels or on a module basis, if there is an issue between
adjacent modules within an LEDfixture. OSCAprovides the user with an easy and
comprehensive method of quickly resolving difference in seam luminance between a groups
of fixtures and, if necessary, the modules that make up the fixtures.
Occasionally when using different batches of the same LEDfixtures together, the LEDs may
have aged differently, or the fixtures may have slightly different calibrations. OSCA allows
comprehensive colour correction to quickly match fixtures which appear to have slightly
different colours or brightnesses.
Note: OSCAis a fixture based adjustment and OSCAvalues are stored in the fixture. This
means the adjustments travel with the panels themselves, so if a LEDwall is re-assembled
from fixtures in a different order, the OSCAadjustments can be used with the new fixture
order. NB OSCAadjustments do not overwrite existing fixture colour calibrations.
Note: OSCAis called on-screen colour correction because when the processor is in OSCAMode
it uses a special user interface that appears on fixtures themselves, highlighting selected
fixture or module seams, fixtures or modules making it quick and intuitive to make
adjustments on several fixtures.
Putting the processor into OSCA Modecan be achieved either the Tools drop-down Menu in
the Main Project Screen, or by using the keyboard shortcut Ctrl+Shift+O.