3D Human Body Coding Standards

As it was mentioned in the previous section, an HBM consists of a number of
segments that are connected to each other by joints. This physical structure can
be described in many different ways. However, in order to animate or interchange
HBMs, a standard representation is required. This standardization allows
compatibility between different HBM processing tools (e.g., HBMs created
using one editing tool could be animated using another completely different tool).
In the following, the Web3D H-anim standards, the MPEG-4 face and body
animation, as well as MPEG-4 AFX extensions for humanoid animation, are
briefly introduced.