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Trajectory

Glossary-28 Vicon MX Hardware System Reference

Trajectory The path though space that

a moving marker follows. This

reconstructed data is stored in a file as a

time-series of points with the same label.

A trajectory can be displayed in the

3D Workspace as a line through the

position of a marker in the current field. A

trajectory may consist of a single

uninterrupted path or of a number of

segments. The latter can occur when

markers are obscured from view. Also see

3D Workspace, .c3d file, Field, Label,

Marker, Trajectory, and .trial file.

Translation The movement of an

object along a specified axis. In Vicon

application software, the translation of an

object can be manipulated to change its

displayed position in a 3D Workspace.

Also see 3D Workspace, Rotation and

Scale.

.trc file Track Row Column file. A text

file with extension .trc, which contains

marker and trajectory data in Track Row

Column format. A .trc file can be used to

import data from third-party applications

into some Vicon application software.

Also see Marker and Trajectory.

Trial The result of data capture in a

Vicon system. The two basic types of data

capture are dynamic trials and static

trials. Trial data can be saved to file types

appropriate for the stage of processing.

Also see .c3d file, Dynamic trial, Static

trial, .trial file, .tvd file, and .x2d file.

.trial file A binary file with extension

.trial, which contains all data from a

motion capture trial (e.g. unprocessed 2D

camera, rigid body, virtual point, and

kinematic data). This file can be created

when the real-time stream is acquired by

Vicon motion capture systems and when

offline data is processed in some Vicon

application software. By default, .trial

files are saved to the active Session

folder of the open database. Also see

Data capture, Kinematic model, Motion

capture, Rigid body, Trial, and Virtual

point.

.TrialTypes file An XML file with

extension .TrialTypes, which contains

configuration settings for motion capture

trial setups created in the Capture tools

pane in Vicon Nexus. Also see Nexus.

Trigger A specified event that initiates

or terminates remote data capture or

synchronization in a Vicon system. This

can be when a specific level either in

increasing or decreasing signal is reached

or at a specified point of an incoming

analog signal. Also see Post-triggering,

Remote triggering, and Timecode

triggering.

Truck The moving of a camera side to

side along a horizontal axis (truck left or

truck right). Also see Dolly, Pan, and Tilt.

.tvd file A binary file with extension

.tvd, which contains 2D camera data

previously captured in a Vicon V-series

system. By default, .tvd files are saved to

the active Session folder of the open

database. Also see Eclipse database and

Vicon V-series system.

V

.vad file Vicon Analog Data file. A

binary file with extension .vad, which

contains unprocessed data from analog

data capture. By default, .vad files are

saved to the active Session folder of the

open database. Similar functionality is

provided by the .x1d file in Vicon Nexus.

Also see Analog and Nexus.

VCam A small format, wide-angle lens

CMOS digital sensor camera used in a

Vicon V-series system. This type of

camera is the same specification as an

SV Cam camera with a standard body

and strobe size. Also see CMOS, SV Cam,

and Vicon V-series system.

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