Studies and Occupational Information

Georgios Papaioannou is a Professor of Computer Graphics at the Department of Informatics of the Athens University of Economics and Business. He received a 4-year BSc in Computer Science in 1996 and a PhD degree in Computer Graphics and Shape Analysis in 2001, both from the National and Kapodestrian University of Athens, Greece.

From 2002 till 2007 he has worked as a virtual reality software engineer at the Foundation of the Hellenic World (FHW) and has actively participated in the design and implementation of the virtual reality dome theatre system of FHW (Hellenic Cosmos). From 2006 till 2010 he was a lecturer at the Department of Informatics of the Athens University of Economics and Business and then an Assistant Professor till 2021. Since 2025 he is a full professor at the department.

Georgios Papaioannou is the head of the AUEB Computer Graphics Group, a part of the Information Processing Laboratory research unit. Its members conduct research on key areas related to image synthesis, and shape analysis with an emphasis on real-time and interactive applications, as well as work to establish national and international collaborations with institutions, organizations and private companies. The AUEB Computer Graphics Group is active and present in major international computer graphics events and its research has been positively greeted by the industry.

The research of Prof. Georgios Papaioannou is focused on real-time computer graphics algorithms, photorealistic rendering and three-dimensional shape analysis. He has published more than 90 scientific papers in international journals and conference proceedings with peer review and book chapters in the above research areas and has co-authored 3 computer graphics textbooks (1 international, 2 Greek). He is currently actively conducting research in the domains of physically-based rendering, real-time global illumination, inverse lighting and opening design problems and registration methods for 3D data.

Prof. Papaioannou has supervised 5 completed doctoral theses and more than 60 undergraduate and graduate theses. Since 1997 he has participated in more than 30 research and development projects funded by the EC, Greece and the private sector as a principal investigator and researcher. He is a member of the ACM, ACM SIGGRAPH and Eurographics associations and has been a reviewer for many established computer graphics journals and conferences. Since 2023, he is the director of the MSc Programme in Digital Methods for the Humanities and member of the UNESCO chair for the digital methods for the humanities and social sciences.

Selected Publications

I. Evangelou, G. Papaioannou, K. Vardis, A. Gkaravelis, A neural builder for spatial subdivision hierarchies, The Visual Computer, 39, pp. 3797–3809, https://doi.org/10.1007/s00371-023-02975-y, 2023.

N. Vitsas, I. Evangelou, G. Papaioannou, A. Gkaravelis, Parallel Transformation of Bounding Volume Hierarchies into Oriented Bounding Box Trees, Computer Graphics Forum (Proc. Eurographics), 42(2), pp. 245-254, 2023.

G. Papaioannou, T. Schreck, A. Andreadis, P. Mavridis, R. Gregor, I. Sipiran, K. Vardis, From Reassembly to Object Completion: A Complete Systems Pipeline. ACM Journal on Computing and Cultural Heritage, 10(2), Article 8, DOI: http://dx.doi.org/10.1145/3009905, 2017.

K. Vardis, A. Vasilakis, G. Papaioannou, A Multiview and Multilayer Approach for Interactive Ray Tracing, Proc. ACM SIGGRAPH Symposium on Interactive 3D Graphics and Games (i3D), 2016.

P. Mavridis, A. Andreadis, G. Papaioannou, Efficient Sparse ICP, to appear in Computer Aided Geometric Design (Proc. Geometric Modeling and Processing), 2015.

K. Vardis, G. Papaioannou, A. Gkaravelis, Real-time Radiance Caching using Chrominance Compression, Journal of Computer Graphics Techniques (JCGT), 3(4), pp. 111-131, 2014.

K. Vardis, G. Papaioannou, A. Gaitatzes, Multi-view Ambient Occlusion with Importance Sampling. Proc. ACM SIGGRAPH Symposium on Interactive 3D Graphics and Games (i3D 2013), pp. 111-118.

G. Papaioannou, Real-Time Diffuse Global Illumination Using Radiance Hints, Proc.ACM SIGGRAPH Symposium on High Performance Graphics (HPG '11), pp. 15-24.

G. Papaioannou, E. A. Karabassi, On the Automatic Assemblage of Arbitrary Broken Solid Artefacts, Image & Vision Computing, Elsevier, 21(5), pp. 401-412, 2003.

G. Papaioannou, E.A. Karabassi, T. Theoharis, Reconstruction of Three-dimensional Objects through Matching of their Parts, IEEE Transactions on Pattern Analysis and Machine Intelligence, 24(1), pp.114-124, 2002.

Selected Projects

GLIDE - Goal-driven Lighting for Dynamic 3D Environments (ARISTEIA II programme)

PRESIOUS - Predictive digitization, restoration and degradation assessment of cultural heritage objects

THOLOS - Design and Construction of the THOLOS VR Dome Theatre, FHW, 2002-2006.