Publications

2026

1. 

   Need for Speed: Zero-Shot Depth Completion with Single-Step Diffusion

   Jakub Gregorek, Paraskevas Pegios, Nando Metzger, Konrad Schindler, Theodora Kontogianni, and Lazaros Nalpantidis

   In Computer Vision and Pattern Recognition Workshops (CVPRW), 2026

   Project Paper arXiv Code Supplement BibTeX

   @inproceedings{gregorek2026marigoldssd,
     title = {Need for Speed: Zero-Shot Depth Completion with Single-Step Diffusion},
     author = {Gregorek, Jakub and Pegios, Paraskevas and Metzger, Nando and Schindler, Konrad and Kontogianni, Theodora and Nalpantidis, Lazaros},
     booktitle = {Computer Vision and Pattern Recognition Workshops (CVPRW)},
     year = {2026},
   }

2025

1. 

   Interactive4D: Interactive 4D LiDAR Segmentation

   Ilya Fradlin, Idil Esen Zulfikar, Kadir Yilmaz, Theodora Kontogianni, and Bastian Leibe

   In International Conference on Robotics and Automation (ICRA), 2025

   Project Paper BibTeX

   @inproceedings{fradlin2025interactive4d,
     title = {Interactive4D: Interactive 4D LiDAR Segmentation},
     author = {Fradlin, Ilya and Zulfikar, Idil Esen and Yilmaz, Kadir and Kontogianni, Theodora and Leibe, Bastian},
     booktitle = {International Conference on Robotics and Automation (ICRA)},
     year = {2025},
   }

2024

1. 

   AGILE3D: Attention Guided Interactive Multi-object 3D Segmentation

   Yuanwen Yue, Sabarinath Mahadevan, Jonas Schult, Francis Engelmann, Bastian Leibe, Konrad Schindler, and Theodora Kontogianni

   In International Conference on Learning Representations (ICLR), 2024

   Project Paper BibTeX

   @inproceedings{yue2024agile3d,
     title = {AGILE3D: Attention Guided Interactive Multi-object 3D Segmentation},
     author = {Yue, Yuanwen and Mahadevan, Sabarinath and Schult, Jonas and Engelmann, Francis and Leibe, Bastian and Schindler, Konrad and Kontogianni, Theodora},
     booktitle = {International Conference on Learning Representations (ICLR)},
     year = {2024},
   }

2023

1. 

   Interactive Object Segmentation in 3D Point Clouds

   Theodora Kontogianni, Ekin Celikkan, Siyu Tang, and Konrad Schindler

   In International Conference on Robotics and Automation (ICRA), 2023

   Best Paper Nominee in Human-Robot Interaction

   Project Paper BibTeX

   @inproceedings{kontogianni2023interactive,
     title = {Interactive Object Segmentation in 3D Point Clouds},
     author = {Kontogianni, Theodora and Celikkan, Ekin and Tang, Siyu and Schindler, Konrad},
     booktitle = {International Conference on Robotics and Automation (ICRA)},
     year = {2023},
     note = {Best Paper Nominee in Human-Robot Interaction},
   }

2. 

   Connecting the Dots: Floorplan Reconstruction Using Two-Level Queries

   Yuanwen Yue, Theodora Kontogianni, Konrad Schindler, and Francis Engelmann

   In Computer Vision and Pattern Recognition (CVPR), 2023

   Project arXiv Code BibTeX

   @inproceedings{yue2023roomformer,
     title = {Connecting the Dots: Floorplan Reconstruction Using Two-Level Queries},
     author = {Yue, Yuanwen and Kontogianni, Theodora and Schindler, Konrad and Engelmann, Francis},
     booktitle = {Computer Vision and Pattern Recognition (CVPR)},
     year = {2023},
   }

2020

1. 

   Continuous Adaptation for Interactive Object Segmentation by Learning from Corrections

   Theodora Kontogianni, Michael Gygli, Jasper Uijlings, and Vittorio Ferrari

   In European Conference on Computer Vision (ECCV), 2020

   Paper BibTeX

   @inproceedings{kontogianni2020continuous,
     title = {Continuous Adaptation for Interactive Object Segmentation by Learning from Corrections},
     author = {Kontogianni, Theodora and Gygli, Michael and Uijlings, Jasper and Ferrari, Vittorio},
     booktitle = {European Conference on Computer Vision (ECCV)},
     year = {2020},
   }

2. 

   DualConvMesh-Net: Joint Geodesic and Euclidean Convolutions on 3D Meshes

   Jonas Schult, Francis Engelmann, Theodora Kontogianni, and Bastian Leibe

   In Computer Vision and Pattern Recognition (CVPR), 2020

   Oral Presentation

   Project Paper Code BibTeX

   @inproceedings{schult2020dualconvmesh,
     title = {DualConvMesh-Net: Joint Geodesic and Euclidean Convolutions on 3D Meshes},
     author = {Schult, Jonas and Engelmann, Francis and Kontogianni, Theodora and Leibe, Bastian},
     booktitle = {Computer Vision and Pattern Recognition (CVPR)},
     year = {2020},
     note = {Oral Presentation},
   }

3. 

   Dilated Point Convolutions: On the Receptive Field Size of Point Convolutions on 3D Point Clouds

   Francis Engelmann, Theodora Kontogianni, and Bastian Leibe

   In International Conference on Robotics and Automation (ICRA), 2020

   Paper BibTeX

   @inproceedings{engelmann2020dilated,
     title = {Dilated Point Convolutions: On the Receptive Field Size of Point Convolutions on 3D Point Clouds},
     author = {Engelmann, Francis and Kontogianni, Theodora and Leibe, Bastian},
     booktitle = {International Conference on Robotics and Automation (ICRA)},
     year = {2020},
   }

2019

1. 

   3D-BEVIS: Bird’s-Eye-View Instance Segmentation

   Cathrin Elich, Francis Engelmann, Jonas Schult, Theodora Kontogianni, and Bastian Leibe

   In German Conference on Pattern Recognition (GCPR), 2019

   YRF DAGM Best Master’s Thesis Award 2019

   Paper BibTeX

   @inproceedings{elich20193dbevis,
     title = {3D-BEVIS: Bird's-Eye-View Instance Segmentation},
     author = {Elich, Cathrin and Engelmann, Francis and Schult, Jonas and Kontogianni, Theodora and Leibe, Bastian},
     booktitle = {German Conference on Pattern Recognition (GCPR)},
     year = {2019},
     note = {YRF DAGM Best Master's Thesis Award 2019},
   }

2018

1. 

   Know What Your Neighbors Do: 3D Semantic Segmentation of Point Clouds

   Francis Engelmann, Theodora Kontogianni, Jonas Schult, and Bastian Leibe

   In European Conference on Computer Vision Workshops (ECCVW), 2018

   Paper BibTeX

   @inproceedings{engelmann2018neighbors,
     title = {Know What Your Neighbors Do: 3D Semantic Segmentation of Point Clouds},
     author = {Engelmann, Francis and Kontogianni, Theodora and Schult, Jonas and Leibe, Bastian},
     booktitle = {European Conference on Computer Vision Workshops (ECCVW)},
     year = {2018},
   }

2017

1. 

   Exploring Spatial Context for 3D Semantic Segmentation of Point Clouds

   Theodora Kontogianni, Francis Engelmann, Alexander Hermans, and Bastian Leibe

   In International Conference on Computer Vision Workshops (ICCVW), 2017

   Oral Presentation

   Project Paper Code BibTeX

   @inproceedings{kontogianni2017context,
     title = {Exploring Spatial Context for 3D Semantic Segmentation of Point Clouds},
     author = {Kontogianni, Theodora and Engelmann, Francis and Hermans, Alexander and Leibe, Bastian},
     booktitle = {International Conference on Computer Vision Workshops (ICCVW)},
     year = {2017},
     note = {Oral Presentation},
   }

2016

1. 

   Incremental Object Discovery in Time-Varying Image Collections

   Theodora Kontogianni, Markus Mathias, and Bastian Leibe

   In Computer Vision and Pattern Recognition (CVPR), 2016

   Paper BibTeX

   @inproceedings{kontogianni2016incremental,
     title = {Incremental Object Discovery in Time-Varying Image Collections},
     author = {Kontogianni, Theodora and Mathias, Markus and Leibe, Bastian},
     booktitle = {Computer Vision and Pattern Recognition (CVPR)},
     year = {2016},
   }