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Geometric Morphometric Classification of Crania for Forensic Scientists

    This website contains downloads for the software 3D-ID as well as a 3D coordinate database with modern cranial remains. 

   About 3D-ID and Geometric Morphometrics

    Geometric morphometrics is an approach to shape analysis that efficiently and maximally incorporates the geometry of specimens into the analysis of their shapes. Traditional approaches to shape analysis rely on somewhat disparate collections of linear distances, ratios, and angular measurements that generally lose valuable shape information. Most, but not all, geometric morphometric methods focus on the analysis of the two- or three-dimensional coordinates of anatomical points from which any distance or angle defined by those points can be computed. This preserves all geometric information obtainable from the points and creates a direct link from the statistical analysis back into the physical space of the specimen.  

3D-ID is a dedicated, but flexible, Java program providing geometric morphometric tools to aid in the assessment of the sex and/or ancestral affiliation of unknown cranial remains. The user provides the three-dimensional coordinates of anatomical points available from the subject, and the program constructs comparable reference samples and assigns the subject to one of several groups for which sufficient data are available. Quantitative measures used in the assignment are provided for all tested groups so the investigator can make an informed choice after examining the relative similarity or distinctiveness of the specimen.

REQUIREMENTS: Any system running Java 1.5 or later.
 
There is no charge for the download and use of 3D-ID.

                   Download 3D-ID....


Database

This site also contains cranial 3D coordinate data collected from forensic remains. The database is searchable and downloadable as a .csv. These data were collected primarily to support the 3D-ID software as reference populations for identification purposes. More information about the database can be found on About 3D Database

Click here if looking for the NCSU Americas Craniometric Database.

    Data is continually collected and added to the database. Be sure to check the Recent Site Activity on the left sidebar.

    This site is maintained by the NCSU Forensic Laboratory. More information about the lab can be found here

People

Ann H. Ross, Ph.D.
E-mail: ahross@ncsu.edu

Dennis Slice, Ph.D.
E-mail: dslice@morphometrics.org