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Computer Society Chapter

IEEE Queensland Section



Computer Society Events 2007

Next event: Wide-Area, Low Frame-Rate Video Exploitation, 13th July 2007

Date/Time: 11:00am, Friday 13th July

Venue: The University of Queensland, St Lucia, General Purpose South Bldg 78, Room 420

Dr Reid Porter is a researcher at the Los Alamos National Laboratories in New Mexcio, USA.

Geographically referenced (geo-spatial) video acquisition systems are now in practical use. Wide area imaging sensors are placed on helicopters, balloons, small aircraft or unmanned aerial vehicle and geographically referenced video is communicated to a ground station in real-time. Compared to satellite imagery, which provides data at time scales of months or years, geo-spatial video provides data to observe and model temporal phenomena at time scales of seconds or minutes.

Geo-spatial video exploitation presents new challenges for computer vision researchers. First, many objects of interest (e.g. vehicles and people) cover very few pixels and therefore specific recognition is very difficult. Second, moving object detection in this imagery is an unsolved problem. Data arrives at about 1 or 2 frames per second, which means point-like moving objects move anywhere from 1 to 200 pixels. In addition, the oblique viewing angles and incomplete digital elevation maps mean buildings and other landmarks suffer from parallax. This introduces a large amount of motion clutter. Finally, registration is often required in real-time and is therefore approximate, e.g., stationary objects might move up to 30 pixels over a short period of time. All these factors combined lead to unique, and extremely difficult recognition and tracking problems.

In this talk we will describe recent algorithmic work which aims to address these challenges, which includes a novel combination of object detection, moving object detection, and anomaly detection. We present initial results for a variety of recognition and tracking problems and will discuss future work in this area.

Neville Holmes, 26th April 2007
On the 26th of April we held a successful event jointly with the Engineers Australia IT & EE subcommittee.  Neville Holmes joined us for the evening to discuss the nature of the computing profession.  Lively debate followed, which is always a sign of a good presentation.

Slides from Neville's presentation are available here.

Mr Holmes is an Honorary Research Associate in the School of Computing at The University of Tasmania, Australia.  After graduating from Melbourne University, he spent two years as a patent examiner before working as a systems engineer at IBM Australia for thirty years.  Taking early retirement, he took up teaching about computing at the tertiary level in Tasmania.  Mr Holmes was a foundation memory of the Victorian Computer Society and was awarded the 1974 ANCAAC Medal for his paper “The Social Implications of the Australian Computer Society.”  Since 2000 he has been editing and writing the feature column “The Profession” for the IEEE Computer Society's flagship magazine Computer.




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