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Alexandre Bourdeu, Ph.D. student

by Alexandre Bourdeu last modified 2009-11-02 17:58

Department of Anthropology
University of Vienna
Althanstrasse 14
1090 Wien
Phone: +43 (0)1 4277 54716
Fax: +43 (0)1 4277 9547
Skype: alexandre.bourdeu

Surface scan of a living personI was employed as a Marie Curie doctoral fellow (EVAN Training Network) at Breuckmann GmbH in Meersburg, Germany. I am currently working on the design of an application dedicated to the digitization of human face and body.

I have worked on the implementation of functions and algorithms for the digitization, mesurement and visualization of three-dimensional anthropological data. Breuckmann GmbH manufactures 3D surface scanners whose technology is based on the projection of structured light on the object or the specimen which allows to operate without contact. The result of a the scan of an object is a triangle mesh, which is a set of points called vertices linked by segments and forming a surface made of triangles, corresponding to the surface of the scanned object, with a precision of less than the tenth of a micrometer.

Once the object has been scanned, several steps are needed to refine the data in order to enhance the visualization. One of the options is to allow the mapping of a color picture to optimize the rendering of the data. I have developed a function to map several pictures taken by a common camera on a digitized model.

Interface for texture mapping

Result of texture mapping

My other main task was the design of functions for the definition of geometrical landmarks and for their measurements. Landmarks are points of interest which can be defined by geometrical properties such as extremal three-dimensional curvatures or extremal distances in comparison with a reference point on the object. I have implemented a function for the research of landmarks on anatomical surfaces and for the measurements between landmarks, on the surface of the digitized model.

Landmarks on a human face

My PhD thesis is now going on at the Department of Anthropology of the university of Vienna, under the title "A Study of the Inheritance of the Habsburg Prognathism Through Sculpted Portraits". The goal of this dissertation is to address the propagation of prognathism in the Habsburg family using geometrical data from busts of family members available across Europe along with the true Habsburg pedigree.

Curves on human jaw