For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

—  ISO Online browsing platform: available at www.iso.org/obp

—  IEC Electropedia: available at www.electropedia.org

3.1
avatar

virtual character serving as the representative of a real character

3.2
character

thing or person to which action is directed or upon which something operates

3.3
displacer

specification of movement restrictions for an HAnim figure

3.4
end effector

site for use by inverse kinematics (IK) systems

3.5
field

property or attribute of an object

3.6
feature point

surface feature on the body, providing a useful relative location or making a significant contribution to overall appearance

3.7
HAnim figure

articulated 3D representation that depicts an animated character as defined in this document

3.8
humanoid

single HAnim figure

3.9
joint

position in an HAnim figure where articulation may occur

3.10
inverse kinematics
IK

mathematical process of recovering the movements of an object in the world from some other data

3.11
level of articulation
LOA

degree of fidelity based on number of joints in an HAnim figure

3.12
object

elemental data type that contains a set of fields of other data types and/or other objects

3.13
pose

humanoid figure posture for the initial geometric model of an HAnim figure

3.14
representation system

system capable of displaying and manipulating an HAnim figure

3.15
rig

entire skeletal structure created after model geometry is completed

3.16
segment

portion between joints of an HAnim figure that represents geometry and appearance

3.17
site

feature point or location of semantic interest within an HAnim figure