ARS | AUGMENTED REALITY SERIES
https://system76.com/weekendproject/
D: Launch the
XBackground
tool from a terminal like this:
XBackground
E: You’ll need to position the projector so that it fills
the interior of your sandbox. It’s okay if it overlaps
slightly. Use the
p
and
q
buttons on the projectors
remote to fill the interior of the sandbox. Each time
your restart the projector, you will have to do this.
If the arrows are not working. It may be that the
"Menu" is still open. Close "Menu" on the projector's
remote to close.
F: After you’re done positioning your projector,
hit
Esc
to close the
Background
application.
CALIBRATE AR SANDBOX
A: As with step 5, this step requires you to have filled
your sandbox with sand. You want the sand
surface to be as level as possible, but it doesn’t
need to be perfectly level.
B: To calibrate your sandbox, you’ll need an alignment
target and several spacers to help you perform the
alignment at multiple heights:
The easiest way to build an alignment target is to
create a target cross-hair on a piece of paper and
tape it to the top of an old CD or DVD. The cross-
hairs should be at right angles to one-another and
be centered on the CD or DVD.
A few rolls of tape make great spacers. Note the
rolls of tape need to have a diameter smaller than
the CD or DVD you’re using for the alignment target.
At each height, you’ll capture 12 tie-points. For a
decent calibration, you’ll need to capture tie-points
at least two heights (24 total tie-points). For an optimal
calibration, we recommend capturing tie-points at
three different heights (36 total tie-points)).
C: Launch
CalibrateProjector
from a terminal like this:
CalibrateProjector -s WIDTH HEIGHT
