C
ALIBRATION
34
Calibration
MultiTaction Cells are calibrated in the factory. The factory settings are aimed
to match the general use cases.
Tuning of the Tracking Parameters
The tracking parameters may be adjusted as needed for the following uses. To
bring up the calibration display, press 'd' on the keyboard. This brings up the
calibration view, with sliders for adjusting the tracking parameters.
Finger Tracking
The main finger tracking parameters are edge limit, and lumi limit. Increasing
these values makes the tracking less sensitive, while decreasing the values makes
tracking more sensitive.
Marker Tracking
MultiTaction Cells can be used to track different markers, and the marker
parameters can be adjusted from the calibration view. The marker tracking
parameters are the same as the ones for older Cells
(see: https://cornerstone.multitouch.fi/cornerstone-documenta-
tion/adjusting-tracking-parameters).
Automatic Geometry calibration
MultiTaction Cells utilize a camera matrix for tracking objects on the display
surface. During transport and installation the physical positions of the cameras
may move by some millimeters, which causes a need for recalibration of the
geometrical alignments of the cameras.
Preparations
You will need one white calibration sheet, which is big enough to cover the
whole display. The sheet can be cardboard or A4 papers stitched together with
two layers, or a piece of cardboard.
Calibration process
It may be necessary to perform recalibrate to the geometry matching on the Cell
on-site if there has been rough handling during transit. To perform calibration,
you need to connect a keyboard to the display, and switch to the on-screen
