Colin Lemmon (JCU) is
studying for a PhD in the area of Wireless Ad Hoc Networks. Our current
papers and topics of interest:
Boundary Mapping and Boundary State Routing (BSR) in Ad-Hoc
Networks, Colin Lemmon and Phillip Musumeci, IEEE Transactions on
Mobile Computing, vol. 7 no. 1 January 2008 (abstract);
Cooperative Behaviour of Location Aware Nodes in Ad-hoc
Networks, Colin Lemmon and Phillip Musumeci, IEEE-DEST 2007, February
2007, Cairns, Australia. (abstract)
(refereed)
We have also investigated geographic coordinate data updates (with data
compression) and trust management in Ad Hoc Networks using geographic
forwarding.
Ben Guy, Nic Bidwell (JCU) and I have been considering how games
engine technology might apply to city (or built environment) planning.
See:
GamePlan: Serious Gaming for Place Making,
Ben Guy, Nicola Bidwell, and Phillip Musumeci,
2nd Australasian Conference on Interactive Entertainment, November 2005,
Sydney, Australia. (ACM portal) (refereed)
Cairns JCU SIT staff have collaborated in the use of games in IT education. See:
Creativity in the Cane Fields: Motivating and Engaging IT Students
through games,
Colin Lemmon, Nicola Bidwell, Marion Hooper, Chris Gaskett,
Jason Holdsworth and Phillip Musumeci,
2nd Annual Microsoft Academic Days Conference on Game Development
in Computer Science Education. (Feb 2007, refereed)
Genevieve Coath (RMIT) and I have worked on image analysis algorithms
for RoboCup. Some of our work to produce a RoboCup vision system that was
not dependent on known object colouring is described in:
News May 2007: Genevieve has completed a PhD in the Dynamic Systems and
Control Group, Mechanical and Manufacturing Engineering, Uni of Melbourne.
Industrial R&D for Ultra High Speed Continuous Paper Inkjet Printers:
From 1998 to 2001, I have led teams developing the computer systems
for ultra high speed inkjet printers which can print unique
content on each page (traditional systems print the same
content on each page). Design challenges: control algorithms to
synchronise image delivery to high speed paper transport (>1 m/s),
signal processing to suppress sensor noise and plant interference, high
speed image generation (>30Mp/s from VLIW DSP and reconfigurable
hardware platform). Design approach: abstraction of image generation
machines, balancing load between configurable hardware and programmable DSP
systems, efficient communications protocols. Some of the resulting
intellectual property is protected with an international patent:
This description of the project development team
and time-lines includes an example of a 6-layer printer in Melbourne,
Australia, attached to a modular high speed collator manufactured by Form Flo, Phoenix, Arizona. A 200
feet/minute single-layer printer handling 34cm wide paper was demonstrated
at the 2000 DRUPA trade show, Dusseldorf, attached to a paper transport
system manufactured by Dimuken, Kyoto, and using
inkjet print heads manufactured by XAAR, Cambridge U.K. Some core team
members have undertaken PhD study: Dr Evan Greensmith (ANU Systems
Engineering 2005), James Webb (UNSW/ADFA Electrical Engineering, in
progress...).
Regional Creative Industries: Justification of
government support requires economic (and other) arguments based on
evidence. As a member of a creative industries working party originally
setup within the cluster group program of the Cairns Regional Economic
Development Corporation, I was part of a small group of 3 who developed the
survey questions for economic analysis to suit current 2006 industry and
government requirements. This led to the launch of The
Ideas Economy: Creative Industries - their size, worth and impact in Far
North Queensland in May 2008.
Optimal Filtering and Array Processing: My PhD
(Optimal Array Processing for Seismic Inversion, ANU 1989)
developed array processing algorithms and 1-dimensional seismic inversion
algorithms for use in tomographic analysis of earth structures. This is
useful as more accurate knowledge of earth structure allows more efficient
planning of overlay removal and/or resource extraction. Brief notes:
1-dimensional, 2-dimensional and 3-dimensional sensor (spatial) arrays are
handled; seismic inversion used an analytic solution to lossy wave
propagation within an "onion peeling" algorithm, work was carried out at
the Australian National University, Canberra, with support from BHP Central
Research Labs (now BHP Billiton) who used array filtering in the
tomographic analysis of coal seams; supervisor was Darrell Williamson.
Selected papers:
Fast Design of Optimal Array
Filters, Phillip Musumeci, IEEE International Conference on Acoustics,
Speech, and Signal Processing, Adelaide, Australia, pp.V509-V512, April
1994. ISBN 0-7803-1775-0;
P. Musumeci and D. Williamson,
Optimum Two-Dimensional Array Filters, Proceedings of the 1989 Australian
Symposium on Signal Processing and its Applications, Adelaide, Australia,
pp.373-376, April 1989;
D. Williamson, P. Agathoklis, and P. Musumeci,
Discrete Modelling for Solving One-Dimensional Inversion on Finite
Media, IEEE CDC Proceedings, Austin, Texas, USA, pp.1892-1896, December
1988;
D. Williamson, K.L. Teo, and P.C. Musumeci,
Optimum FIR Array Filters, IEEE Trans. Acoustics, Speech, Signal
Processing, vol. ASSP-36, no. 8, pp.1211-1222, August 1988;
Image Coding: I have worked in a team performing
research on coding algorithms that efficiently handle digital image
sequences at different (but related) spatial resolutions from HDTV to
videophone sizes. This was useful because it allowed better conversion
between formats and researchers became more familiar with the techniques
employed e.g. motion compensation, subband coding, Huffman and run-length
coding, etc. This work was backed by ADFA, Telstra, Siemens, and the
Australian Government, and was based at ADFA, Canberra.
J. Arnold, M. Cavenor, P. Musumeci and C. Sholl,
"Coding Scheme for Flexible Interworking of Video Services on B-ISDN",
Packet Video Workshop, 1991.
Modern Control Applications: I worked with Bob
Bitmead in the ANU Systems Engineering Department on design and
implementation of optimal control algorithms to control speed of steam
turbines driving sugar milling units. This was useful because we obtained
better quality of control from less actuator use (i.e. better chute level
consistency and less variation in turbine speed), and we also obtained more
precise control (outputs vary in a smaller region of uncertainty) that made
it possible to run the plant much closer to its limits (overall output and
profit is higher). Extension of this work by others has resulted in more
accurate control of a set of sugar milling units, less energy use, and in
some instances the duplication of expensive sugar milling plant has been
avoided. The CSR sugar mill at Ingham trialled these algorithms which
included a Kalman filter to estimate plant model state and an LQG
controller driving turbine speed. Bob is now with the department of Mechanical and Aerospace
Engineering at UCSD.
This report has one figure of daily plant data omitted.
Microprocessor/DSP Real-time Systems:
Application areas include mechanical harvesters, automotive body flexing
analysis (Ford and RMIT, Melbourne), and a miscellany of microprocessor
based systems.