Federico Bolelli

Workshops

Workshops and international challenges I have organized, mostly as satellite events of MICCAI, ICPR and ICIAP: from binary image processing and reproducible research to 3D dental image analysis.

6workshops
4challenges
2022organizing since

2026

Workshop ODIN General Chair / Lead Organizer

ODIN 2026: Oral and Dental Image aNalysis

International Workshop on Multi-Structure and Multi-Modal Learning for 3D Dental Image Analysis
  • 27 September 2026
  • Strasbourg Convention Center, Strasbourg, France
  • In conjunction with 29th International Conference on Medical Image Computing and Computer Assisted Intervention - MICCAI 2026

The second edition of ODIN brought together researchers, clinicians and industry working on oral and dental image analysis: CBCT, intraoral scans and photographs, and the multimodal models that connect them. Besides keynotes, spotlight talks and a poster session, it hosted three international challenges, two of them on generating clinical reports from 3D data.

3 keynotes
  • Three challenges hosted: ToothFairy4, Bite2Text and STS 2026
  • €6,000 in prizes for the ToothFairy4 and Bite2Text winners
  • Live demo of the ODIN Data Initiative
Keynotes
  • Bas Loomans, Radboud University Medical Center, Netherlands “Data, Detection & Decisions”
  • Roberto Mangano, FifthIngenium, Lugano, Switzerland “Current and Future Applications of XR and AI in Dentistry”
  • Tabea Flügge, Charité - Berlin University Medicine, Germany “Digital Dentistry meets Data Science: Imaging, Reconstruction and the Role of AI”
Organizers (9)
  • Federico Bolelli · University of Modena and Reggio Emilia, Italy
  • Achraf Ben-Hamadou · Digital Research Center of Sfax, Tunisia
  • Yaqi Wang · Hangzhou Dianzi University, China
  • Luca Lumetti · University of Modena and Reggio Emilia, Italy
  • Sergi Pujades · University Grenoble Alpes, France
  • Shuai Wang · Hangzhou Dianzi University, China
  • Kevin Marchesini · University of Modena and Reggio Emilia, Italy
  • Zhi Li · Hangzhou Dianzi University, China
  • Costantino Grana · University of Modena and Reggio Emilia, Italy
Sponsors
W&H · IAI Biotech Dental
Website Program
Challenge ODIN General Chair / Lead Organizer

ODIN 2026 Challenges: ToothFairy4 and Bite2Text - Multimodal Report Generation for Oral and Dental Image Analysis

Multimodal text report generation for oral and dental image analysis
  • 27 September 2026
  • Strasbourg Convention Center, Strasbourg, France
  • In conjunction with 29th International Conference on Medical Image Computing and Computer Assisted Intervention - MICCAI 2026

ODIN 2026 introduced a benchmark for turning 3D dental data into clinical text. ToothFairy4 asks for maxillofacial and surgical planning reports from CBCT volumes (dental status, bone quality, anatomical risks); Bite2Text asks for orthodontic reports from intraoral scans and photographs. Both are trained on multi-center data and scored on test sets from independent sites.

  • ToothFairy4 winner: Singh, Lu and Sagl, a segmentation-guided VLM pipeline for CBCT report generation
  • Bite2Text winner: Li et al., a modular structured pipeline from dental geometry to clinical text
  • Prizes: €1,500, €1,000 and €500 for each sub-challenge
Related publications
Sponsors
W&H · IAI Biotech Dental
Website Program Challenge & results
Workshop RRPR Main Chair

RRPR 2026: Sixth Workshop on Reproducible Research in Pattern Recognition

  • 21 August 2026
  • Louis Néel Building, Lyon, France
  • In conjunction with 28th International Conference on Pattern Recognition - ICPR 2026

RRPR is both a short participative course on reproducible research and a practical workshop on how to do it, aimed at all ICPR attendees and especially at PhD students and young researchers. Papers come in two tracks: reproducible-research frameworks and experiences, and companion papers that document the implementation of works accepted at ICPR. This edition marked ten years of RRPR and the work of the IAPR Technical Committee 22.

16 papers presented 2 keynotes
  • Outcome of the ICPR 2026 Reproducible Label
  • Post-proceedings published separately by Springer in LNCS
Keynotes
  • Sorina Camarasu-Pop, CREATIS, CNRS, Lyon “Reproducibility Challenges: A Focus on Computational Reproducibility with Examples from the Medical Imaging Research Community”
  • Simon Tournier, Université Paris Cité, Saint Louis Research Institute “Reproducible Computational Environment: Archiving and Beyond”
Organizers (5)
  • Federico Bolelli · University of Modena and Reggio Emilia, Italy (Main Chair)
  • Miguel Colom · Centre Borelli, ENS Paris-Saclay, France
  • Daniel Lopresti · Lehigh University, USA
  • Bertrand Kerautret · LIRIS, Université Lumière Lyon 2, France
  • Adrien Krähenbühl · ICube, University of Strasbourg, France (Reproducible Label Chair)
Website Program

2025

Workshop ODIN General Chair / Lead Organizer

ODIN 2025: Oral and Dental Image aNalysis

International Workshop on Multi-Structure and Multi-Modal Learning for 3D Dental Image Analysis
  • 27 September 2025
  • Daejeon Convention Center, Daejeon, South Korea
  • In conjunction with 28th International Conference on Medical Image Computing and Computer Assisted Intervention - MICCAI 2025

The first edition of ODIN, a MICCAI workshop on 3D dental image analysis: CBCT and intraoral scan registration, multi-instance segmentation, landmark detection, learning with limited supervision and trustworthy AI for dentistry. It hosted three international challenges on CBCT and intraoral scan analysis.

3 keynotes
  • Three challenges hosted: ToothFairy3, 3DTeethSeg2 and STSR 2025
  • Proceedings published in Springer LNCS, volume 16473
Keynotes
  • Bram van Ginneken, Diagnostic Image Analysis Group, Radboud University Medical Center, Netherlands “Medical image analysis should be really open, not only pretend to be open (as OpenAI)”
  • Huiyu Zhou, University of Leicester, United Kingdom “Tooth Segmentation - A Powerful Tool for Oral Health”
  • Dahong Qian, Shanghai Jiao Tong University, China “Evolution of AI Medical Imaging in Orthognathic Surgery and Orthodontics”
Organizers (13)
  • Federico Bolelli · University of Modena and Reggio Emilia, Italy
  • Achraf Ben-Hamadou · Digital Research Center of Sfax, Tunisia
  • Yaqi Wang · Communication University of Zhejiang, China
  • Luca Lumetti · University of Modena and Reggio Emilia, Italy
  • Dahong Qian · Shanghai Jiao Tong University, China
  • Kevin Marchesini · University of Modena and Reggio Emilia, Italy
  • Jun Liu · Hangzhou Dianzi University, China
  • Niels van Nistelrooij · Radboud University, Netherlands
  • Sergi Pujades · University Grenoble Alpes, France
  • Lan Feng · Zhejiang University, China
  • Yifan Zhang · Hangzhou Dental Hospital Group, China
  • Shankeeth Vinayahalingam · Radboud University, Netherlands
  • Costantino Grana · University of Modena and Reggio Emilia, Italy
Related publications
Sponsors
See Through · 3Shape
Website Program Proceedings
Challenge ToothFairy General Chair / Lead Organizer

ToothFairy3: Multi-Class Segmentation in CBCT Volumes

Multi-class segmentation of maxillofacial anatomy in CBCT, part of the ODIN 2025 challenges
  • 27 September 2025
  • Daejeon Convention Center, Daejeon, South Korea
  • In conjunction with 28th International Conference on Medical Image Computing and Computer Assisted Intervention - MICCAI 2025

The third ToothFairy challenge extended the dataset of ToothFairy2 with 102 more fully annotated scans and a much finer taxonomy, including the pulp cavity of every tooth and small neurovascular structures. Runtime counted in the ranking alongside accuracy, and a second track asked for click-based interactive segmentation of the Inferior Alveolar Canal.

  • 582 CBCT volumes (532 public, 50 held out for testing) with 77 classes and over 40,000 annotated objects
  • Task 1: multi-class segmentation, with runtime in the ranking
  • Task 2: interactive segmentation of the Inferior Alveolar Canal
  • Five top teams presented their methods at ODIN 2025, chaired by Federico Bolelli and Zdravko Marinov
Related publications
Website Challenge & results

2024

Challenge ToothFairy General Chair / Lead Organizer

ToothFairy2: Multi-Structure Segmentation in CBCT Volumes

Multi-structure segmentation in maxillofacial CBCT
  • Marrakech, Morocco
  • In conjunction with 27th International Conference on Medical Image Computing and Computer Assisted Intervention - MICCAI 2024

The second ToothFairy challenge moved from the Inferior Alveolar Canal alone to the full maxillofacial anatomy: jawbones, teeth with their FDI numbers, crowns, bridges, implants, maxillary sinuses and pharynx. Participants’ methods were run and evaluated with a standardized protocol, including tooth detection and numbering.

26 participating teams
  • 530 CBCT volumes (480 public, 50 hidden test) with expert 3D annotations of 42 classes
  • Results and analysis published in Medical Image Analysis (2026)
Related publications
Website Challenge & results
Workshop RRPR Main Chair

RRPR 2024: Fifth Workshop on Reproducible Research in Pattern Recognition

  • 1 December 2024
  • Kolkata, India
  • In conjunction with 27th International Conference on Pattern Recognition - ICPR 2024

The fifth edition of RRPR, held in hybrid mode as a satellite event of ICPR 2024. It mixed talks on reproducible-research tools and benchmarks with ICPR companion papers, and hosted the presentation of the proposal that led to the IAPR Technical Committee on Reproducible Research (TC22).

13 papers presented
Organizers (4)
  • Daniel Lopresti · Lehigh University, USA
  • Miguel Colom · Centre Borelli, ENS Paris-Saclay, France
  • Bertrand Kerautret · LIRIS, Université Lumière Lyon 2, France
  • Federico Bolelli · University of Modena and Reggio Emilia, Italy
Website Program Proceedings

2023

Challenge ToothFairy General Chair / Lead Organizer

ToothFairy: A Cone-Beam Computed Tomography Segmentation Challenge

Segmentation of the Inferior Alveolar Canal in CBCT volumes
  • 8 October 2023
  • Vancouver, Canada
  • In conjunction with 26th International Conference on Medical Image Computing and Computer Assisted Intervention - MICCAI 2023

The first ToothFairy challenge asked participants to segment the Inferior Alveolar Canal, the nerve canal that surgeons must avoid in the mandible, from CBCT scans with both sparse 2D and dense 3D annotations. It was organized with Radboud University Medical Center.

  • 443 CBCT scans, 153 with voxel-level annotations: the largest public dataset of its kind
  • Results and the best methods published in IEEE Transactions on Medical Imaging
  • Open-source repository with the implementations of the best submissions
Related publications
Website Challenge & results

2022

Workshop Co-organizer

Binary is the New Black (and White)

An International Workshop on Binary Image Processing
  • 24 May 2022
  • Lecce, Italy
  • In conjunction with 21st International Conference on Image Analysis and Processing - ICIAP 2022

Binary image processing is less fashionable in the deep learning era, yet most computer vision pipelines still rely on it: connected components labeling, thinning, contour tracing and morphology prepare training data and clean up network outputs. BNBW collected work on faster algorithms for CPU, GPU and FPGA, binary features and maps for neural networks, binarization, and extensions to 3D volumes.

  • Program committee of eight experts from Europe, Asia, Oceania and North America
  • Mixed event, in person in Lecce and streamed online
  • Followed by the Frontiers Research Topic “Binary Is the New Black (and White)”
Organizers (2)
  • Costantino Grana · University of Modena and Reggio Emilia, Italy
  • Federico Bolelli · University of Modena and Reggio Emilia, Italy
Proceedings
Workshop DeepHealth Co-organizer

Deep Learning and High Performance Computing to Boost Biomedical Applications

  • 23 May 2022
  • Lecce, Italy
  • In conjunction with 21st International Conference on Image Analysis and Processing - ICIAP 2022

A workshop of the H2020 DeepHealth project on deep learning and high performance computing for biomedical applications. It combined invited talks with paper presentations on the project’s results and on related solutions for medical imaging.

Organizers (3)
  • Federico Bolelli · University of Modena and Reggio Emilia, Italy
  • Costantino Grana · University of Modena and Reggio Emilia, Italy
  • Jon Ander Gómez · Universitat Politècnica de València, Spain
Proceedings