System information

Glossary-6 Vicon MX Hardware System Reference
location. Also see CCD and Sensor.
Composite video signal A video signal
containing all the necessary chrominance
(color), luminance (black and white), and
synchronization pulses combined using a
standard such as PAL or NTSC. Also see
NTSC, PAL, Progressive video,
Synchronization, and Synchronization.
.conf file An XML file with extension
.conf which contains Vicon Nexus
configuration settings. This file is created
by Nexus. Also see Nexus.
Constraint The mathematical
relationship between one element in a
kinematic model and another element
whose behavior it controls. For example,
a segment may be constrained by a
marker, the path a muscle takes over a
segment may be constrained by a wrap
object, or the position of a segment or
model marker may be constrained in the
local coordinate system. Also see Local
coordinate system, Marker, and
Segment.
Context The condition or circumstance
that relates data in an event (e.g. left and
right foot events in gait analysis). Also
see Event.
Context bar The area below the Time
Bar ruler in which events contained in
context that are currently in use are
displayed in some Vicon application
software. Also see Context, Event, and
Time bar.
Control bar A tabbed pane on the left
side of an operating mode in a Vicon iQ or
Tracker application software window. A
control bar may contain either options for
determining the way data is displayed in
the workspace or help on using the
application. Also see Activity bar and
Operating mode.
Coordinates data In Vicon MX, the x
and y location of the start and end points
of a line of illuminated pixels in a
grayscale blob; it is the grayscale data
without the pixel values. Coordinates
data can be displayed as just the start
and end edges of each line of grayscale,
or with connecting lines between the start
and end edges. The latter looks similar to
edge data from Vicon V-series cameras.
Also see Edges and Grayscale blob.
.cp file Calibration Parameters file. A
text file with extension .cp, which
contains the calibration parameters
specified for a set of Vicon cameras. This
file is created during the camera
calibration process and used when data
from these cameras is processed. A copy
of the .cp file is saved to the active
Session folder of the open database.
Similar functionality is provided by the
.xcp file in Vicon Nexus application
software. Also see Camera calibration,
Nexus and .xcp file.
.cro file Calibration Reference Object
file. A text file with extension .cro, which
contains for one or more calibration
objects the coordinates of its markers in
relation to each other. This file also
contains configuration entries for each of
the calibration objects supplied in the
Vicon calibration kit, so they can be
selected in Workstation application
software. These .cro files are installed in
the Vicon Calibration Objects folder (by
default, C:\Program Files\Vicon\System
\CalibrationObjects). Also see Marker,
Calibration kit, and Calibration object.
.csm file Character Studio Motion
capture file. A text file with extension
.csm, which contains capture data from a
Vicon system in a format that can be
used by 3D Studio Max. This file is
created by a pipeline operation in some
Vicon application software and saved in
the active Session folder of the open
database. Also see Capture data and
Pipeline.
MXhardware_Reference.book Page 6 Thursday, September 7, 2006 11:36 AM