Civil Engineering Building (H20)
Level 4, Room CE411
Associate Professor in the School of Civil and Environmental Engineering
Level 1: I use geographic information to enhance location-based decision-making.
Level 2: I conduct geospatial information research that allows us to improve the way we view, understand, design, plan, manage, analyse, interpret, and extract spatio-temporal information such as patterns and trends of geospatial data.
Level 3: I investigate point clouds from terrestrial, mobile and airborne lidar (known as light detection and ranging) mapping, images from unmanned aerial vehicle mapping, and airborne/satellite imagery for the purposes of data segmentation and classification, digital elevation modelling, feature extraction, building edge detection, change detection and monitoring environmental changes.
Interest in engineering
Why did you get into engineering?
I was a mathematician by training and, at some point, got engaged in satellite orbit design and manoeuvre which diverted my research interests to satellite geodesy, global navigation satellite systems, and geospatial information science.
What are your research goals?
My main research aim is to apply the geospatial information approach to real-world problems and help decision-making in the fields of asset/utility management, natural resources exploration, intelligent transportation, natural disaster and emergency management, and public health research.
What do people not understand about you do?
Almost all human activities and natural phenomena are spatially distributed, so can be studied using geospatial information systems. For example, I collaborate with archaeologists to identify and map artefacts using non-destructive geospatial information technology, and also co-work with medical professionals to explore correlation between diseases and geographical context of patients.
Advice for prospective civil and environmental engineers
The broadness of geospatial information science is only limited by your own imagination. Geospatial Technology is now being used by local governments and business firms on a daily basis. Geospatial Technology is a game changer that shapes the future. Be a leader, not a follower.
- GMAT3220 Geospatial Information Systems
- GMAT4220 Geospatial Information Science
- GEOS9016 Principles of Geographic Information Systems
Number currently in lab: 8 PhD students and 2 Masters by Research students
Number graduated: 10 PhDs and 4 Masters by Research
- Emergency management based on volunteered geographic information - Zi CHEN
- Assessment of Central Business District (CBD) accessibility using multi-transportation modes - Jeyuan QI
- Image processing and pattern recognition using hyperspectral images - Qishuo GAO
- Unmanned aerial vehicle-based lidar mapping for forest fuel loads estimation - Li LIU
- Monitoring of disturbance regimes in Australian forests and woodlands from airborne lidar - Jingyi SUN
- Understanding spatial patterns of wildfire occurrence in the South-Eastern Australia - Yang ZHANG
- Single and multi-objective optimization approaches for solving a Green Integrated Municipal Solid Waste Location-Routing Problem - Hossein ASEFI
- City-scale evacuation management in flood scenarios: development and implementation of a multi-agent based approach - Xuefen LIU
- Visual-based pose estimation and self-calibration for unmanned aerial vehicle photogrammetry - Mohammad Ridhwan TAMJIS
- Advanced management of geocoded address database for spatially enabling government: a case in Brunei Darussalam - Nor Zetty Akhtar HAJI ABDUL HAMID
Looking for students for projects related to:
Geographic Information Systems (GIS) GIS is now more than ever an enabling technology for utilities and communications, transportation, public safety, natural resources, health and human services, etc. My main research is to apply GIS to real-world problems and help decision-making in the fields of asset/utility management, natural resources exploration, intelligent transportation, natural disaster and emergency management, and public health research.
Geospatial Data Acquisition Technologies Traditional photogrammetry and hi-resolution optical and infrared imaging systems continue to be important geospatial data acquisition technologies. Digital image capture systems are mounted on different platforms, such as hi-resolution satellites, aircraft, unmanned aerial vehicles, road vehicles, etc. Research areas include sensor calibration, direct georeferencing of sensors and automated feature extraction, as well as those related to a variety of mapping/imaging applications. One of my research interests is data fusion of lidar point clouds and multispectral/hyperspectral images, which is essential for the enhanced feature extraction from multi-layered datasets.
Light Detection and Ranging (lidar) Lidar provides massive volumes of “point cloud” data, consisting of 3D coordinates of points, together with their information on the ground reflected laser signals. Lidar systems are typically mounted on aircraft or road vehicles and are used for civil engineering applications with higher spatial resolution and accuracy. There are many research challenges, ranging from sophisticated analysis of lidar sensor data, through to the development of applications-specific algorithms for terrain and forest mapping, 3D city modelling and rapid mobile mapping of transport corridors and engineering structures. I am interested in spatial information extraction from lidar data, UAV imagery and aerial/satellite imagery for data segmentation and classification, digital elevation modeling, feature extraction, building edge detection, change detection, and monitoring environmental changes.
Professional Organisations and Consulting positions
- Senior Member, Institute of Electrical and Electronics Engineers (IEEE)
- National Delegate, Commission 3, International Federation of Surveyors (FIG)
- Working Group Member, WG I/6 Lidar for Airborne and Spaceborne Sensing, International Society for Photogrammetry and Remote Sensing (ISPRS)
- Working Group Member, WG 4.3.3. Numerical Weather Prediction for Positioning, International Association of Geodesy (IAG)
- Professional Member, Surveying & Spatial Sciences Institute (SSSI), Australia
- Professional Member, American Geophysics Union (AGU), USA
- Professional Member, Institute of Navigation (ION), USA
- Editorial Board, International Journal on Civil Engineering and Urban Planning
- Editorial Board, International Journal of Geoinformatics
- Editorial Board, Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
Awards, Grants, Patents
- Outstanding Best Paper Awards, IEEE WA Section (2010)
- NSW Awards for Excellence in Surveying & Spatial Information (2008)
- Excellent Paper Awards, The Korean Society of Surveying, Geodesy, Photogrammetry & Cartography (2001)
- O'Reilly, D., Shewan, L., Armstrong, R., Lim, S., Chang, N., Domett, K., Halcrow, S., Unraveling the Mystery of the Plain of the Jars, Lao PDR, ARC-DP150101164, 2015-2019.
- Whitty, M., Lim, S., Improved yield prediction for the Australian wine industry, NSW Department of Primary Industries/GWRDC R&D Applications Shared Grant, 2014-2017.
- Ross, S., Karskens, G., Lim, S., et al., Federated Archaeological information Management System, National eResearch Collaboration Tools and Resources (NeCTAR) Project, 2012-2014.
- Lim, S., Trinder, J.C. and Turner, R., Full-Waveform Lidar Remote Sensing for Forest Inventory, ARC, ARC-LP100100847, 2010-2013.
- Zhang, K., Teunissen, P., Rizos, C., Lim, S., Marshall, J.L., Kuleshov, Y., Liou, Y., Platform Technologies for Space, Atmosphere and Climate, Australian Space Research Program (ASRP), 2010-2013.
- Lim, S., Message Passing Method for N-screen Services, Electronics and Telecommunications Research Institute, S. Korea, 2011-2012.
- Rizos, C., Lim, S., and Roberts, C., The Feasibility and Design of an Operational Real-Time GNSS CORS Analysis Capability for the Australian Region, CRC-SI, Project 1.15, 2009.
- Zhang, K., Wu, F., Rizos, C., Lim, S., Le Marshall, J., Rea, A., Kuleshov, Y., Satellite-Based Radio Occultation for Atmospheric Sounding, Weather Forecasting and Climate Monitoring in the Australian Region, ARC, ARC-Linkage, 2008-2011
- Collier, P. and Lim, S., Quality Control Issues for Real-Time Positioning, CRC-SI, Project 1.12, 2008-2010.
- Higgins, M., Feng, Y., Rizos, C. and Lim, S., Lorimer, R., Integrating Electricity, Telecommunications and Government Infrastructure to Deliver Precise Positioning Services in Regional Areas, CRC-SI, Project 1.04, 2007-2010.
- Lim, S., Metadata Research on Spatial Data, Omnilink Ltd. Pty, 2005-2008.
Ph.D. (Aerospace Engineering and Engineering Mechanics), University of Texas, Austin, TX, USA.
M.A. (Mathematics) Seoul National University, Seoul, South Korea.
B.A. (Mathematics) Seoul National University, Seoul, South Korea.