1. Quality Wheat Cooperative Research Centre Ltd., Locked Bag 1345, North Ryde, NSW 1670, Australia.
2. CSIRO Plant Industry, Grain Quality Research Laboratory, PO Box 7 North Ryde, NSW 1670, Australia.
3. Department of Mechanical and Mechatronic Engineering, University of Sydney, NSW 2006, Australia.
4. School of Applied Sciences, University of Wolverhampton, Wulfruna St., Wolverhampton WV1 1SB, UK.
5. CSIRO Plant Industry, GPO Box 1600 Canberra, ACT 2601, Australia. Corresponding author: Phone (Sydney Office): +61 2 9490 8437. Fax: +61 2 9490 8419. Email: F.Bekes@pi.csiro.au.