Vicon IX 2000 L Informacje Techniczne Pobierz pdf (Strona 221)

Capture space

Vicon MX Hardware System Reference Glossary-5

or reference data from external video or

audio recording devices.

Capture space The full dimensions

(length, width, and depth) of the room

being used as a Vicon motion capture

studio (for entertainment applications) or

laboratory (for life sciences applications).

Capture volume The area of the

capture space in which Vicon cameras are

able to capture the motion of trial

subjects. Also see Capture space,

Calibration volume, Reconstruction

volume, and Subject.

.car file Capture Analog Reconstruction

file. A text file with extension .car, which

contains all the parameters required for

capture and reconstruction in Workstation

application software. This file is created

when a system or session configuration is

specified in Workstation and initially

contains the default parameters for the

system. Also see Motion capture and

Reconstruction.

CCD Charge Coupled Device. An image

sensor consisting of a grid of pixels made

up of capacitors sensitive to light. An

image is projected through a lens onto

the capacitor array, causing each capaci-

tor to accumulate an electric charge pro-

portional to the light intensity at that

location. This charge is subsequently con-

verted into a voltage, and the voltage for

each pixel is read out from the sensor.

Also see CMOS and Sensor.

CCIR Consultative Committee for

International Radio (the predecessor of

the International Telecommunication

Union–Telecommunication

Standardization Bureau, ITU–T). A format

defined for analog black and white

television, with a vertical resolution of

625 lines and a base frame rate of 25 Hz.

This is the format used in Europe. CCIR

uses the EBU timecode standard. Also see

EBU timecode, EIA, LTC, PAL, SECAM,

Timecode, and VITC.

Center of Mass The theoretical point of

a segment or body at which the whole

mass may be considered as concentrated.

Also see Segment.

Centroid In Vicon MX, a 2D circle with

cross-hairs for the horizontal and vertical

radii fitted around the center of intensity

calculated for a grayscale blob viewed by

an MX Camera. The equivalent for Vicon

V-series systems is a circle. Also see

Circle, Centroid fitting, and Grayscale

blob.

Centroid fitting In Vicon MX, the

process by which algorithms in

MX Cameras or in Vicon application

software calculate the center of intensity

for a grayscale blob and fit a centroid

around it. The equivalent functionality for

Vicon V-series systems is provided by

circle fitting. Also see Centroid, Circle

fitting, and Grayscale blob.

Centroids data In Vicon MX, the x,y

coordinates and the radius of the centroid

calculated for a grayscale blob. Also see

Centroid and Grayscale blob.

CG plug-in Computer Graphics plug-in.

A software module that facilitates the

import of Vicon data into a third-party

animation package. Also see Plug-in.

Child segment A segment in a

kinematic model whose attributes are

controlled by a parent segment. A child

segment also can be the parent of other

child segments. Also see Parent segment.

Circle In Vicon V-series systems, a 2D

circular shape fitted to a series of

horizontal video lines for a blob. Also see

Blob and Circle fitting. For Vicon MX

systems, see Centroid.

Circle fitting In Vicon V-series

systems, the process by which algorithms

in Vicon application software calculate a

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