Staff profile

Personal web pages http://www.dur.ac.uk/ioannis.ivrissimtzis

I am an Associate Professor in the Department of Computer Science of Durham University. I have a degree in mathematics from the University of Thessaloniki, Greece and a PhD in mathematics from the University of Southampton. Before joining Durham University I was a lecturer at the Department of Creative Computing in Coventry University. Before that, I was a researcher at the Department of Computer Graphics of the
Max-Planck Institut fuer Informatik, in Saarbruecken, Germany and before that, a Research Associate at the Computer Laboratory of Cambridge University.

My research interests are in the area of computer graphics. In particular, I work on subdivision surfaces, polygonal mesh encoding and the application of statistical learning methods in surface reconstruction from scan data.

• 2003: Talk at Computer Science Colloquia, University of Wales Swansea, UK: I was invited to give a talk at Computer Science Colloquia, University of Wales Swansea, UK. The title was "Statistical Learning in Surface Reconstruction".
• 2002: Talk at Workshop on Geometric Modeling, Dagstuhl, Germany (Dagstuhl event 02201): I was invited to participate and give a tak at the Workshop on Geometric Modeling, in Dagstuhl, Germany, in May 2002. The title of the talk was "Evolving n-gons in subdivision schemes with small support".

Chapter in book

• User-Defined Hand Gesture Interface to Improve User Experience of Learning American Sign Language
  
  Wang, J., Ivrissimtzis, I., Li, Z., Zhou, Y., & Shi, L. (2023). User-Defined Hand Gesture Interface to Improve User Experience of Learning American Sign Language. In C. Frasson, P. Mylonas, & C. Troussas (Eds.), Augmented Intelligence and Intelligent Tutoring Systems: 19th International Conference, ITS 2023, Corfu, Greece, June 2-5, 2023, Proceedings (pp. 479-490). Springer Verlag. https://doi.org/10.1007/978-3-031-32883-1_43
• Subdivision Surfaces and Applications
  
  Catalano, C., Ivrissimtzis, I., & Nasri, A. (2008). Subdivision Surfaces and Applications. In L. De Floriani & M. Spagnuolo (Eds.), Shape analysis and structuring. (pp. 115-143). Springer Verlag. https://doi.org/10.1007/978-3-540-33265-7_4

Conference Paper

• Enhancing American Sign Language Learning with LLM-Assisted Feedback: A Comparative Study with Traditional Methods
  
  Wang, J., Ivrissimtzis, I., Li, Z., & Shi, L. (2026). Enhancing American Sign Language Learning with LLM-Assisted Feedback: A Comparative Study with Traditional Methods. In Human-Computer Interaction – INTERACT 2025 (pp. 210-215). Springer Nature Switzerland. https://doi.org/10.1007/978-3-032-05008-3_40
• The Role of Extraversion in AI-Mediated Communication: User Personality and AI Trait Preferences in Chinese Dyads
  
  Wang, J., Ivrissimtzis, I., Li, Z., Gu, W., & Shi, L. (2025). The Role of Extraversion in AI-Mediated Communication: User Personality and AI Trait Preferences in Chinese Dyads. In Human-Computer Interaction – INTERACT 2025 (pp. 137-141). Springer Nature.
• Mesh Comparison Using Regular Grids
  
  Kaye, P., & Ivrissimtzis, I. (2024). Mesh Comparison Using Regular Grids. In Italian Chapter Conference 2024 - Smart Tools and Apps in Graphics. https://doi.org/10.2312/stag.20241347
• Enhancing User Experience in Chinese Initial Text Conversations with Personalised AI-Powered Assistant
  
  Wang, J., Ivrissimtzis, I., Li, Z., & Shi, L. (2024, May 11). Enhancing User Experience in Chinese Initial Text Conversations with Personalised AI-Powered Assistant. Presented at CHI ’24: CHI Conference on Human Factors in Computing Systems, Honolulu HI, USA.
• Comparative Efficacy of 2D and 3D Virtual Reality Games in American Sign Language Learning
  
  Wang, J., Ivrissimtzis, I., Li, Z., & Shi, L. (2024, March 16). Comparative Efficacy of 2D and 3D Virtual Reality Games in American Sign Language Learning. Presented at 2024 IEEE Conference on Virtual Reality and 3D User Interfaces Abstracts and Workshops (VRW), Orlando, FL, USA. https://doi.org/10.1109/vrw62533.2024.00234
• A multiscale optimisation algorithm for shape and material reconstruction from a single X-ray image
  
  Westmacott, H., Ivrissimtzis, I., & Weinzierl, T. (2024). A multiscale optimisation algorithm for shape and material reconstruction from a single X-ray image. In ICIGP ’24: Proceedings of the 2024 7th International Conference on Image and Graphics Processing (pp. 252-259). ACM. https://doi.org/10.1145/3647649.3647690
• Race Bias Analysis of Bona Fide Errors in Face Anti-spoofing
  
  Abduh, L., & Ivrissimtzis, I. (2023). Race Bias Analysis of Bona Fide Errors in Face Anti-spoofing. In CAIP 2023: Computer Analysis of Images and Patterns (pp. 23-32). Springer. https://doi.org/10.1007/978-3-031-44240-7_3
• Developing and Evaluating a Novel Gamified Virtual Learning Environment for ASL
  
  Wang, J., Ivrissimtzis, I., Li, Z., Zhou, Y., & Shi, L. (2023). Developing and Evaluating a Novel Gamified Virtual Learning Environment for ASL. In Human-Computer Interaction – INTERACT 2023: 19th IFIP TC13 International Conference, York, UK, August 28 – September 1, 2023, Proceedings, Part I (pp. 459-468). Springer Verlag. https://doi.org/10.1007/978-3-031-42280-5_29
• Exploring the Potential of Immersive Virtual Environments for Learning American Sign Language
  
  Wang, J., Ivrissimtzis, I., Li, Z., Zhou, Y., & Shi, L. (2023). Exploring the Potential of Immersive Virtual Environments for Learning American Sign Language. In Responsive and Sustainable Educational Futures: 18th European Conference on Technology Enhanced Learning, EC-TEL 2023, Aveiro, Portugal, September 4–8, 2023, Proceedings (pp. 459-474). Springer Verlag. https://doi.org/10.1007/978-3-031-42682-7_31
• Anomaly Detection with Transformers in Face Anti-spoofing
  
  Abduh, L., Omar, L., & Ivrissimtzis, I. (2023). Anomaly Detection with Transformers in Face Anti-spoofing. Presented at WSGC 2023: 31. International Conference in Central Europe on Computer Graphics, Visualization and Computer Vision 2023, Plzen, Czech Republic. https://doi.org/10.24132/JWSCG.2023.10
• Quality perception and discrimination thresholds in quantised triangle meshes
  
  Almutairi, A., Saarela, T., & Ivrissimtzis, I. (2021). Quality perception and discrimination thresholds in quantised triangle meshes. Presented at Sixth International Workshop on Pattern Recognition, Beijing, China. https://doi.org/10.1117/12.2604720
• Colour Processing in Adversarial Attacks on Face Liveness Systems
  
  Abduh, L., & Ivrissimtzis, I. (2019). Colour Processing in Adversarial Attacks on Face Liveness Systems. In F. P. Vidal, G. K. L. Tam, & J. C. Roberts (Eds.), Proceedings of Computer Graphics and Visual Computing 2019 (CGVC). (pp. 149-152). The Eurographics Association. https://doi.org/10.2312/cgvc.20191272
• A Perceptual Difference Scaling Study on Quantized 3D Models
  
  Almutairi, A., Saarela, T., & Ivrissimtzis, I. (2018). A Perceptual Difference Scaling Study on Quantized 3D Models [Conference paper]. Presented at ACM Symposium on Applied Perception, Vancouver, Canada.
• Single Image Watermark Retrieval from 3D Printed Surfaces via Convolutional Neural Networks
  
  Zhang, X., Wang, Q., & Ivrissimtzis, I. (2018). Single Image Watermark Retrieval from 3D Printed Surfaces via Convolutional Neural Networks. In G. Tam & F. Vidal (Eds.), Computer Graphics & Visual Computing (CGVC) 2018 : Eurographics UK Chapter proceedings. (pp. 117-120). Eurographics Association. https://doi.org/10.2312/cgvc.20182019
• Order-randomized Laplacian mesh smoothing
  
  Yang, Y., Rushmeier, H., & Ivrissimtzis, I. (2017). Order-randomized Laplacian mesh smoothing. In M. S. Floater, T. Lyche, M. Mazure, K. Mørken, & L. L. Schumaker (Eds.), Mathematical methods for curves and surfaces : 9th International Conference, MMCS 2016, Tønsberg, Norway, June 23 - June 28, 2016. Revised selected papers. (pp. 312-323). Springer Verlag. https://doi.org/10.1007/978-3-319-67885-6_17
• A user study on quantisation thresholds of triangle meshes
  
  Almutairi, A., Saarela, T., & Ivrissimtzis, I. (2017). A user study on quantisation thresholds of triangle meshes. In T. R. Wan & F. Vidal (Eds.), Computer Graphics & Visual Computing (CGVC) 2017. Eurographics UK Chapter Proceedings, anchester Metropolitan University, United Kingdom, 14 – 15 September 2017. The Eurographics Association. https://doi.org/10.2312/cgvc.20171283
• Designing a facial spoofing database for processed image attacks
  
  Omar, L., & Ivrissimtzis, I. (2016). Designing a facial spoofing database for processed image attacks. In 7th International Conference on Imaging for Crime Detection and Prevention (ICDP 2016) : Madrid, Spain, 23-25 November 2016 ; proceedings. IET. https://doi.org/10.1049/ic.2016.0073
• Resilience of Luminance based Liveness Tests under Attacks with Processed Imposter Images
  
  Omar, L., & Ivrissimtzis, I. (2016). Resilience of Luminance based Liveness Tests under Attacks with Processed Imposter Images. In V. Skala (Ed.), Computer Science Research Notes (pp. 79-82). WSCG.
• Evaluating the Resilience of Face Recognition Systems Against Malicious Attacks
  
  Omar, L., & Ivrissimtzis, I. (2015). Evaluating the Resilience of Face Recognition Systems Against Malicious Attacks. In X. Xie, M. W. Jones, & G. K. L. Tam (Eds.), Proceedings of the 7th UK Computer Vision Student Workshop (BMVW). (pp. 5.1-5.9). BMVA Press. https://doi.org/10.5244/c.29.bmvw.5
• Mesh Alignment using Grid based PCA
  
  Kaye, D., & Ivrissimtzis, I. (2015). Mesh Alignment using Grid based PCA. In J. Braz, J. Pettré, & P. Richard (Eds.), Proceedings of the 10th International Conference on Computer Graphics Theory and Applications (VISIGRAPP 2015) : Berlin, Germany, 11-14 March 2015. (pp. 174-181). SciTePress. https://doi.org/10.5220/0005313801740181
• A steganalytic algorithm for 3D polygonal meshes
  
  Yang, Y., Pintus, R., Rushmeier, H., & Ivrissimtzis, I. (2014). A steganalytic algorithm for 3D polygonal meshes. In ICIP 2014 : 2014 IEEE International Conference on Image Processing (ICIP). (pp. 4782-4786). Institute of Electrical and Electronics Engineers. https://doi.org/10.1109/icip.2014.7025969
• An evaluation of reconstruction filters for a path-searching task in 3D
  
  Roberts, D., Ivrissimtzis, I., & Holliman, N. (2014). An evaluation of reconstruction filters for a path-searching task in 3D. In 2014 Sixth International Workshop on Quality of Multimedia Experience (QoMEX 2014) : Singapore, 18-20 September 2014. (pp. 165-170). Institute of Electrical and Electronics Engineers. https://doi.org/10.1109/qomex.2014.6982314
• A Geometric Approach for the Computation of Principal Directions in Point Sets
  
  Ivrissimtzis, I. (2014). A Geometric Approach for the Computation of Principal Directions in Point Sets. In R. Borgo & W. Tang (Eds.), Computer Graphics & Visual Computing (CGVC) 2014 : University of Leeds, Leeds, United Kingdom 10 – 11 September 2014 ; proceedings. Eurographics Association. https://doi.org/10.2312/cgvc.20141210
• Model selection for the Dubuc-Deslauriers family of subdivision schemes
  
  Mustafa, G., & Ivrissimtzis, I. (2013). Model selection for the Dubuc-Deslauriers family of subdivision schemes. In R. J. Cripps, G. Mullineux, & M. A. Sabin (Eds.), Mathematics of surfaces - XIV. The proceedings of a conference on the Mathematics of Surfaces, organised by the Institute of Mathematics and its Applications held at the University of Birmingham in September 2013. (pp. 155-162). Institute of Mathematics and its Applications.
• Effects of Noise on Quantized Triangle Meshes
  
  Ivrissimtzis, I. (2010). Effects of Noise on Quantized Triangle Meshes. In M. Dahlen, M. Floater, T. Lyche, J. Merrien, K. Morken, & L. Schumaker (Eds.), Mathematical methods for curves and surfaces : 7th International Conference, MMCS 2008, 26 June - 1 July, 2008, Tønsberg, Norway ; revised selected papers. (pp. 274-284). Springer Verlag. https://doi.org/10.1007/978-3-642-11620-9_18
• Implicit surface reconstruction and feature detection with a learning algorithm
  
  Kaye, D., & Ivrissimtzis, I. (2010). Implicit surface reconstruction and feature detection with a learning algorithm (J. Collomosse & I. Grimstead, Eds.). European Association for Computer Graphics.
• Bootstrap test error estimations of polynomial fittings in surface reconstruction.
  
  Ramli, A., & Ivrissimtzis, I. (2009). Bootstrap test error estimations of polynomial fittings in surface reconstruction. In M. Magnor, B. Rosenhahn, & H. Theisel (Eds.), Proceedings of the Vision, Modeling, and Visualization Workshop 2009: November 16 - 18, 2009, Braunschweig, Germany (pp. 101-109). Institut für Simulation und Graphik.
• Distance Based Feature Detection on 3D Point Sets.
  
  Ahmad, R., & Ivrissimtzis, I. (2009). Distance Based Feature Detection on 3D Point Sets. In W. Tang & J. Collomosse (Eds.), Theory and practice of computer graphics 2009: Eurographics UK Chapter proceedings ; Cardiff University, United Kingdom, 17th to 19th June 2009; [papers presented at the 6th Theory and Practice of Computer Graphics Conference (TP.CG.09)] (pp. 53-56). Switzerland Eurographics Association.
• Multi-Colour Sketch Recognition in a Learning Environment
  
  Don, L., & Ivrissimtzis, I. (2008). Multi-Colour Sketch Recognition in a Learning Environment. In L. Li, T. Shih, Q. L. Li, S. Yang, & Q. Zhou (Eds.), 1st IEEE International Conference on Ubi-Media Computing, 15-16 July 2008, Lanzhou, China ; proceedings. (pp. 441-443). Institute of Electrical and Electronics Engineers. https://doi.org/10.1109/umedia.2008.4570932
• Self-Organising Maps for Implicit Surface Reconstruction
  
  Yoon, M., Ivrissimtzis, I., & Lee, S. (2008). Self-Organising Maps for Implicit Surface Reconstruction (I. S. Lim & W. Tang, Eds.). European Association for Computer Graphics.
• Surface Reconstruction with Neural Meshes.
  
  Ivrissimtzis, I., Jeong, W., Lee, S., Lee, Y. L., & Seidel, H. (2005). Surface Reconstruction with Neural Meshes (M. Daehlen, K. Morken, & L. Schumaker, Eds.). Nashboro Press.

Journal Article

• Hand gesture recognition for user-defined textual inputs and gestures
  
  Wang, J., Ivrissimtzis, I., Li, Z., & Shi, L. (2025). Hand gesture recognition for user-defined textual inputs and gestures. Universal Access in the Information Society, 24, 1315–1329. https://doi.org/10.1007/s10209-024-01139-6
• Bivariate non-uniform subdivision schemes based on L-systems
  
  Gérot, C., & Ivrissimtzis, I. (2023). Bivariate non-uniform subdivision schemes based on L-systems. Applied Mathematics and Computation, 457, Article 128156. https://doi.org/10.1016/j.amc.2023.128156
• Big data for human security: The case of COVID-19
  
  Cárdenas, P., Ivrissimtzis, I., Obara, B., Kureshi, I., & Theodoropoulos, G. (2022). Big data for human security: The case of COVID-19. Journal of Computational Science, 60, Article 101574. https://doi.org/10.1016/j.jocs.2022.101574
• Early Fault Diagnostic System for Rolling Bearing Faults in Wind Turbines
  
  Xu, L., Wang, Q., Ivrissimtzis, I., & Li, S. (2022). Early Fault Diagnostic System for Rolling Bearing Faults in Wind Turbines. Journal of Nondestructive Evaluation, Diagnostics and Prognostics of Engineering Systems, 5(1), Article 011004. https://doi.org/10.1115/1.4051222
• From Farey fractions to the Klein quartic and beyond
  
  Ivrissimtzis, I., Singerman, D., & Strudwick, J. (2021). From Farey fractions to the Klein quartic and beyond. Ars Mathematica Contemporanea, 20(1), 37-50. https://doi.org/10.26493/1855-3974.2046.cb6
• Using theoretical ROC curves for analysing machine learning binary classifiers
  
  Omar, L., & Ivrissimtzis, I. (2019). Using theoretical ROC curves for analysing machine learning binary classifiers. Pattern Recognition Letters, 128, 447-451. https://doi.org/10.1016/j.patrec.2019.10.004
• Trivalent expanders, $(Delta – Y)$-transformation, and hyperbolic surfaces
  
  Ivrissimtzis, I., Peyerimhoff, N., & Vdovina, A. (2019). Trivalent expanders, $(Delta – Y)$-transformation, and hyperbolic surfaces. Groups, Geometry, and Dynamics, 13(3), 1103-1131. https://doi.org/10.4171/ggd/518
• Reevaluating Reconstruction Filters for Path-Searching Tasks in 3D
  
  Roberts, D., & Ivrissimtzis, I. (2017). Reevaluating Reconstruction Filters for Path-Searching Tasks in 3D. Computer Graphics Forum, 36(6), 291-302. https://doi.org/10.1111/cgf.12939
• A 3D Steganalytic Algorithm and Steganalysis-Resistant Watermarking
  
  Yang, Y., Pintus, R., Rushmeier, H., & Ivrissimtzis, I. (2017). A 3D Steganalytic Algorithm and Steganalysis-Resistant Watermarking. IEEE Transactions on Visualization and Computer Graphics, 23(2), 1002-2626. https://doi.org/10.1109/tvcg.2016.2525771
• Quality measures of reconstruction filters for stereoscopic volume rendering
  
  Roberts, D. A., & Ivrissimtzis, I. (2016). Quality measures of reconstruction filters for stereoscopic volume rendering. Computational Visual Media, 2(1), 19-30. https://doi.org/10.1007/s41095-016-0035-7
• Mesh Discriminative Features for 3D Steganalysis
  
  Yang, Y., & Ivrissimtzis, I. (2014). Mesh Discriminative Features for 3D Steganalysis. ACM Transactions on Multimedia Computing, Communications and Applications, 10(3), Article 27. https://doi.org/10.1145/2535555
• Spectral representations of vertex transitive graphs, Archimedean solids and finite Coxeter groups
  
  Ivrissimtzis, I., & Peyerimhoff, N. (2013). Spectral representations of vertex transitive graphs, Archimedean solids and finite Coxeter groups. Groups, Geometry, and Dynamics, 7(3), 591-615. https://doi.org/10.4171/ggd/199
• Linear Correlations between Spatial and Normal Noise in Triangle Meshes
  
  Yang, Y., Norbert, P., & Ivrissimtzis, I. (2013). Linear Correlations between Spatial and Normal Noise in Triangle Meshes. IEEE Transactions on Visualization and Computer Graphics, 19(1), 45-55. https://doi.org/10.1109/tvcg.2012.106
• Efficient construction of the Čech complex
  
  Dantchev, S., & Ivrissimtzis, I. (2012). Efficient construction of the Čech complex. Computers and Graphics, 36(6), 708-713. https://doi.org/10.1016/j.cag.2012.02.016
• Polygonal mesh watermarking using Laplacian coordinates
  
  Yang, Y., & Ivrissimtzis, I. (2010). Polygonal mesh watermarking using Laplacian coordinates. Computer Graphics Forum, 29(5), 1585-1593. https://doi.org/10.1111/j.1467-8659.2010.01767.x
• Curve subdivision with arc-length control.
  
  Hernandez-Mederos, V., Estrada-Sarlabous, J., Morales, S., & Ivrissimtzis, I. (2009). Curve subdivision with arc-length control. Computing, 86(2-3), 151-169. https://doi.org/10.1007/s00607-009-0068-1
• Variational Bayesian noise estimation of point sets.
  
  Yoon, M., Ivrissimtzis, I., & Lee, S. (2009). Variational Bayesian noise estimation of point sets. Computers & Graphics., 33(3), 226-234. https://doi.org/10.1016/j.cag.2009.03.019
• Multi-pen Sketch Recognition in a Learning Environment.
  
  Don, L., & Ivrissimtzis, I. (2009). Multi-pen Sketch Recognition in a Learning Environment. Journal of Multimedia., 4(2), 80-86. https://doi.org/10.4304/jmm.4.2.80-86
• Point Set Denoising using a Variational Bayesian Method
  
  Yoon, M., & Ivrissimtzis, I. (2008). Point Set Denoising using a Variational Bayesian Method. 정보과학회논문지 : 컴퓨팅의 실제, 14(5), 527-531.
• Surface and normal ensembles for surface reconstruction
  
  Yoon, M., Lee, Y., Lee, S., Ivrissimtzis, I., & Seidel, H. (2007). Surface and normal ensembles for surface reconstruction. Computer-Aided Design, 39(5), 408-420. https://doi.org/10.1016/j.cad.2007.02.008
• Regular maps and principal congruence subgroups of Hecke groups.
  
  Ivrissimtzis, I., & Singerman, D. (2005). Regular maps and principal congruence subgroups of Hecke groups. European Journal of Combinatorics, 26(3-4), 437-356. https://doi.org/10.1016/j.ejc.2004.01.010
• On the support of recursive subdivision
  
  Ivrissimtzis, I., Sabin, M., & Dodgson, N. (2004). On the support of recursive subdivision. ACM Transactions on Graphics, 23(4), 1043-1060. https://doi.org/10.1145/1027411.1027417
• Evolutions of Polygons in the Study of Subdivision Surfaces
  
  Ivrissimtzis, I., & Seidel, H. (2004). Evolutions of Polygons in the Study of Subdivision Surfaces. Computing, 72(1-2), 93-103. https://doi.org/10.1007/s00607-003-0049-8
• A generative classification of mesh refinement rules with lattice transformations
  
  Ivrissimtzis, I., Dodgson, N., & Sabin, M. (2004). A generative classification of mesh refinement rules with lattice transformations. Computer Aided Geometric Design, 21(1), 99-109. https://doi.org/10.1016/j.cagd.2003.08.001
• An interpolating 4-point C2 ternary stationary subdivision scheme
  
  Hassan, M., Ivrissimtzis, I., Dodgson, N., & Sabin, M. (2002). An interpolating 4-point C2 ternary stationary subdivision scheme. Computer Aided Geometric Design, 19(1), 1-18. https://doi.org/10.1016/s0167-8396%2801%2900084-x
• The refinability of the 4-point scheme.
  
  Ivrissimtzis, I., Dodgson, N., Hassan, M., & Sabin, M. (2002). The refinability of the 4-point scheme. Computer Aided Geometric Design, 19(4), 235-238.