WEBVTT

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[MUSIC PLAYING]

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Welcome to our motion
capture lab here at RITMO,

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and this is where we do our
motion capture recordings.

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So these are the
Qualisys cameras.

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They're fixed to the scaffolding
and currently kind of tracing

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the perimeter of the room.

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But sometimes we also take them
down and put them on tripods

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if we want to get a
close-up of something

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or catch something
from a different level.

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Yeah.

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Usually they're sitting up
here in this big rectangle,

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and this is good because
it provides quite a lot

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of coverage for the whole room.

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And the cameras are--

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they take a little bit of work
if you want to reorient them.

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So right now we
know that they're

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fixed to capture this
area, and then this area

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is ready to be used.

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And the system that we
are mainly focusing on

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in this course is an infrared
motion capture system,

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and a passive one.

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And what this consists
of is these cameras

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that Laura just talked about.

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And these cameras, they both
send out infrared light,

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and then they record
the light that

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is reflected from the markers
that we have like this.

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So it's passive because
this marker doesn't really

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do anything.

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[LAUGHS] It just--

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it's made out of
reflective stuff.

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You'll also notice that we have
curtains going all around here.

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So this is actually
windows back there,

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but it's best for this
kind of motion capture

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to have as little sunlight
coming in as possible

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because this can also cause an
interference with the cameras.

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For this lab, it's
quite well set up.

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So we're able to use this whole
space for capturing people.

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And then, there's a room back
here, the control room, where

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there's some computers set up.

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So this is our control room.

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The computer that runs the
Qualisys system is here.

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So it's possible for us to
take the recordings here

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while the participants are in
the other room doing the task.

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We're also able to monitor
through video cameras what's

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going on in the other room and
give them verbal instructions

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to make sure they're
doing all right.

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[MUSIC PLAYING]

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