The research I perfomed falls into two categories: understanding the process used to create the data, and visualisation techniques which might be of use in analysing it.

Much of the work that has taken place so far in the research group is summarised in Carl Hetherington’s PhD thesis (HRTF estimation by shape parameterization of the human head and pinnae. PhD thesis, University Of York, October 2004), and in papers published during his research (Carl Hetherington, Anthony I.Tew. Parameterizing human pinna shape for the estimation of head-related transfer functions. Presented at the AES Convention, March 2003), (Carl Hetherington, Anthony I.Tew, Yufei Tao. Three-dimensional elliptic Fourier methods for the parameterization of human pinna shape. In Proceedings of the IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2003)). As well as presenting the methods used to prepare head shape data for analysis, the thesis summarises other approaches that other groups have taken.

The analysis technique used is presented in another paper by the research group (Yufei Tao, Anthony I. Tew, and Stuart J. Porter. The differential pressure synthesis method for efficient acoustic pressure estimation. Journal of the Audio Engineering Society, 51(7-8):647-656, 2003).

Other groups have used other methods to find mappings between the HRTF and physical measurements. These include: C. P. Brown and R. O. Duda. An effcient HRTF model for 3-D sound. In IEEE Workshop on Applications of Signal Processing to Audio and Acoustics, 1997 and C. Jin, P. Leong, J. Leung, A. Corderoy, and S Carlile. Enabling individualized virtual auditory space using morphological measurements. In Proceedings of the first IEEE Pacifc-Rim Conference on Multimedia, pages 235-238, 2000.

Members of the research group had already been using the software

VTK during their work, and the book documenting the toolkit also describes basic visualisation techniques: Will Schroeder, Ken Martin, Bill Lorensen. The Visualisation Toolkit, An Object-Oriented Approach to 3D Graphics, Kitware.

Some visualisation resources are available on the web - these included information on using VTK with the open source 3D package

Blender from the University of Alberta's Research Support Group, who also provide general information about visualisation.