Anthropometry

• Anthropometry (from Greek άνθρωπος anthropos, "man" and μέτρον metron, "measure") refers to the measurement of the human individual. An early tool of physical anthropology, it has been used for identification, for the purposes of understanding human physical variation, in paleoanthropology and in various attempts to correlate physical with racial and psychological traits. wikipedia

• Published References for review and citation

Ergonomic Models of Anthropometry, Human Biomechanics and Operator-Equipment Interfaces: Proceedings of a Workshop ( 1988 )

Professional Societies: Professional Certifications, Licenses in Anthropometry International Standards: ISO - Basic human body measurements for technological design -- Part 1: Body measurement definitions and landmarks IEEE -

North American Standards:

ANSI

South, Central, Latin American Standards:

European, Middle Eastern and African Standards:

Asian Standards:

Human joint articulation of any type:

• ball & socket
• elbow
• gliding
• hinge
• hip
• saddle joints

can be expressed using Euler angles or quaternions.

• The word quaternion is modified based on how it is used--rotation, orientation or attitude modifiers are germane but there are others for different use cases.
• There are multiple approaches to convert Euler angles into quaternions (http://en.wikipedia.org/wiki/Hamilton_product#Hamilton_product, http://en.wikipedia.org/wiki/Quaternions_and_spatial_rotation).