Tagged: 3D landmark points

What is a Population Average?

A population average merges together several individual specimens to form a consensus of the group being studied. A population average is useful for computing and understanding what “normal” means for a specific group. For example, what is the normal 3D shape of crania, mandible, condyle, femoral head, tibial plateau, etc.

The following steps are used to create a population average from a set of input specimen based on 3D volumetric data. In the example below,
3D anatomic landmark points placed on three input specimen guide the process to create a population average.

Geometric morphometrics provides invaluable information in the areas of physical anthropology and medical research. By comparing differences in 3D anatomic structures it can help quantify an evolutionary feature or relationship, determine an organisms ontogeny or help improve diagnostics and surgical planning among many other applications.

While a post-doc at UC Davis, I led the software development effort for the IDAV Landmark Editor in conjunction with my advisor Nina Amenta and colleague Eric Delson at Lehman College, NY.