Motive
© 2013 NaturalPoint Inc. All rights reserved. P-OT-153.1307
Software Installation
Download the Motive software installer from the Motive
Download Page: www.optitrack.com/downloads/
Run the installer and follow its prompts. Activate your
software by launching Motive (once installation is finished)
and clicking on the License Tool button in the Motive splash
screen, or by using the OptiTrack License Activation Service:
www.optitrack.com/support/
Placing Cameras and Hubs
Cameras should be placed around the capture volume so
that markers in the volume will be visible by at least two
cameras at all times. Aim cameras so that their views overlap
the most in the region where most of the capture will take
place. When using tripods or camera stands, ensure that they
are placed in stable positions. Any camera movement after
calibration will require recalibrating the system. Cable strain-
relief should be used at the camera end of camera cables to
prevent potential damage to the camera.
For more information, visit:
wiki.optitrack.com/index.php?title=Prepare_Volume
Cabling and Load Balancing
USB systems: When placing cameras, keep cable length
restrictions in mind. USB cameras must be connected to
hubs with cables not to exceed 5 meters in length. The
hub must be connected directly to the computer with no
more than one 5 meter USB cable and up to two 5 meter
active USB extensions for a total of 15 meters between
the computer and the hub. Additionally, OptiHubs require
external power, and synchronization cables must be
connected in a chain between OptiHubs. When connecting
hubs to the computer, ensure the cameras are evenly
split between the computer’s USB controllers to optimize
available bandwidth. The controller each camera is associated
with can be viewed in the Device pane.
Ethernet systems: Ethernet cameras are subject to the
limitations of the PoE (Power over Ethernet)and Ethernet
communications standards, meaning that the distance
between camera and switch must be less than 100 meters.
Separate Ethernet camera network traffic from the office/
local area network. If the computer used for capture is
connected to an existing network then use a second
Ethernet port or add-on network card for connecting the
computer to the camera network. For best performance do
not connect devices other than the capture computer to the
camera network. Add-on network cards should be installed if
additional Ethernet ports are required.
Camera Calibration
Click the Layout → Calibrate menu item to access the
calibration layout. Ensure that the volume is free of unwanted
objects, and that all light interference has been physically
masked off. Click Block Visible to use software masking to
block any light sources or reflections that cannot be physically
masked. Click Start Wanding to begin wanding. When
enough samples have been collected, click on the Calculate
button to begin calibration calculations. When the Ready to
Apply button becomes enabled, click Apply Result to apply
the calibration and save it to a file.
Suit Up
Put on the motion capture suit and ensure that it is as
tight as possible. Motive derives the position of each body
segment from the markers that you will place on the suit, so
preventing the shifting of markers due to a loose-fitting suit is
essential.
Define a Skeleton
Click the Layout → Create menu item to access the
model creation layout. Have the actor you wish to define
a skeleton for enter the volume wearing a suit that is fully
and appropriately markered. You can select the marker set
you wish to use from the dropdown in the skeleton pane
and view the correct positioning if necessary. Once only the
desired actor is in view and striking a T-pose, click Create.
Record Data
Once the volume is calibrated and skeletons are defined,
click the Layout → Capture menu item to access the capture
layout. Press the red record button to begin capturing 3D
data. Once data is captured, you can trajectorize, edit, and
export your data in C3D, BVH, or FBX format for use with
most 3D animation software.
Label Data
Markers associated with Rigid Bodies and Skeletons are
labeled automatically. Unconstrained markers can also be
tracked, but need to be labeled manually. These markers
can be grouped into MarkerSets - a collection of labels.
MarkerSets are recorded with a take. Each marker is then
labeled manually after trajectorization.
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Need help?
Call technical support at 1-888-865-5535 or e-mail us at
support@optitrack.com. For general information, please visit
www.optitrack.com.
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