Acknowledgements
Firstly I wish to thank my supervisor Dr. Peter Kovesi for his invaluable advice and support throughout the year. Portions of the research in this thesis use the CASIA iris image database collected by Institute of Automation, Chinese Academy of Sciences, and I thank them for these eye images, which proved extremely useful to this research. Also thanks go to the Lions Eye Institute of Perth, Chris Barry and Nicola Ritter for the use of their eye image database.