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Owheo Building, Room 251
Tel +64 3 479 8587

Research Interests

My main research interest is Visual Computing, a field described as the intersection between traditional Computer Graphics, Computer Vision, Visualisation and Human-Computer Interaction. Within this field, I am particularly interested in methods for content capturing for immersive environments and visualisation techniques where digital data needs to be visualised in its spatial context. This kind of visualisation is often referred to as Situated Visualisation and has many application areas, including the visualisation of geospatial data, sports broadcasting, construction site visualisation, archeological visualisation, medical visualisation, and personal information systems. Situated visualisation raises many interesting research questions for Computer Vision research (such as live 3D reconstruction, image analysis and vision-based tracking), for Visualisation and Computer Graphics research (such as seamless integration of information and information presentation) as well as for Human-Computer-Interaction (such as intuitive viewpoint control).

Before joining the Department of Computer Science in September 2016, I worked as a senior developer at Animation Research Limited (ARL) in Dunedin. At ARL I was doing industrial research and development in the field of sports visualisation, post-production, and geo-data visualisation, in co-operation with several renowned companies and institutions. Before moving to New Zealand, I worked as a research assistant at Graz University of Technology in Austria, from where I also obtained my PhD researching visualisation techniques for GIS data and temporal data in an outdoor augmented reality system.

For more information, please see the Visual Computing Otago research group website:

Visual Computing Otago


COSC 342 Computer Graphics
COSC 326 Effective Programming
COSC 241 Programming and Problem Solving
COSC 450 Computer Vision and Graphics
COSC 212 Web Application Development

Professional Roles

Associate Editor IEEE Transactions of Computer Graphics and Visualization
Associate Editor Elsevier Computer & Graphics Journal
IEEE International Symposium on Mixed and Augmented Reality (Program Chair, Program Committee, Poster Chair)
IEEE Virtual Reality (Program Committee)
Pacific Graphics Conference Paper Chair

Current Research

Marsden – Fast Start: “Interactive 3D computational videography”
MBIE Endeavour Fund – Smart Ideas: “Augmented spectator sports experience – Situated visualisation for enriching sports experience for on-site spectators”
UORG: "360° Videos for Immersive Teaching Online and in the Classroom for Secondary and Tertiary Education: the new frontier”

Student supervision

Wei Hong Lo, PhD student, "Situated Visualisation to Enrich Sports Experience for On-site Spectators"
Anthony Dickson, PhD student,"3D from single view videos"
Shazia Gul, PhD student, " Localization and Tracking for Augmented Reality in Dynamic large scale environments"
Lewis Baker, PhD graduate, "Augmented Reality for On-site Visualisation of Sports Data"
Patrick Skinner, Master's graduate, "Localisation for Augmented Reality"


Baker, L., Ventura, J., Langlotz, T., Gul, S., Mills, S., & Zollmann, S. (2024). Localization and tracking of stationary users for augmented reality. Visual Computer, 40, 227-244. doi: 10.1007/s00371-023-02777-2 Journal - Research Article

Gul, S., Lo, W. H., Mills, S., & Zollmann, S. (2023). Benchmarking localization for augmented reality in large scale environments. In D. Bailey, A. Punchihewa & A. Paturkar (Eds.), Proceedings of the 38th International Conference on Image and Vision Computing New Zealand (IVCNZ). IEEE. doi: 10.1109/IVCNZ61134.2023.10344159 Conference Contribution - Published proceedings: Full paper

Schieber, H., Schmid, F., Hassan, M. U., Zollmann, S., & Roth, D. (2023). A modular approach for 3D reconstruction with point cloud overlay. Proceedings of the IEEE International Symposium on Mixed and Augmented Reality Adjunct (ISMAR-Adjunct). (pp. 609-610). IEEE. doi: 10.1109/ISMAR-Adjunct60411.2023.00129 Conference Contribution - Published proceedings: Full paper

Lo, W. H., Regenbrecht, H., & Zollmann, S. (2023). Sports visualization in the wild: The impact of technical factors on user experience in Augmented Reality sports spectating. IEEE Computer Graphics & Applications, 1-11. Advance online publication. doi: 10.1109/MCG.2023.3308958 Journal - Research Article

Zhang, F., Zhao, J., Zhang, Y., & Zollmann, S. (2023). A survey on 360° images and videos in mixed reality: Algorithms and applications. Journal of Computer Science & Technology, 38(3), 473-491. doi: 10.1007/s11390-023-3210-1 Journal - Research Article

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