6-DoF localisation & SLAM

Visual Localisation and 3D Mapping

Beyond recognising a place, robots need their precise position and orientation, and maps that remain usable as the world changes.

Why it matters

We work on scene coordinate regression and 2D–3D matching for accurate 6-DoF localisation, on making pose-graph optimisation robust to wrong loop closures, and on reconstructing the same place across many sessions despite substantial appearance change. We also showed that structure-from-motion and visual SLAM pipelines can be tuned without any ground truth.

Team

Members of my group at the QUT Centre for Robotics and close collaborators.

Tobias Fischer Tobias Fischer
Lead
Michael Milford Michael Milford
Collaborator
Son Tung Nguyen Son Tung Nguyen
Former PhD student
Emilio Olivastri Emilio Olivastri
Former postdoc
Beverley Gorry Beverley Gorry
PhD student
Alejandro Fontan Alejandro Fontan
Collaborator
Ming Xu Ming Xu
Former PhD student

Publications

Selected papers from this line of work. See all publications.

arXiv 2026

TACO: A Test and Check Framework for Robust Pose Graph Optimization

Emilio Olivastri, Alberto Pretto, and Tobias Fischer

arXiv 2606.29851

WACV 2026

Robust Scene Coordinate Regression via Geometrically-Consistent Global Descriptors

Son Tung Nguyen, Alejandro Fontan, Michael Milford, and Tobias Fischer

IEEE/CVF Winter Conference on Applications of Computer Vision 2026

arXiv 2026

Long-Term Multi-Session 3D Reconstruction Under Substantial Appearance Change

Beverley Gorry, Tobias Fischer, Michael Milford, and Alejandro Fontan

arXiv 2602.20584

ICCV 2025

FUSELOC: Fusing Global and Local Descriptors to Disambiguate 2D-3D Matching in Visual Localization

Son Tung Nguyen, Alejandro Fontan, Michael Milford, and Tobias Fischer

ICCV 2025 Workshop on Camera Calibration and Pose Estimation (CALIPOSE)

arXiv 2024

Look Ma, No Ground Truth! Ground-Truth-Free Tuning of Structure from Motion and Visual SLAM

Alejandro Fontan, Javier Civera, Tobias Fischer, and Michael Milford

arXiv 2412.01116

WACV 2024

FocusTune: Tuning Visual Localization through Focus-Guided Sampling

Son Tung Nguyen, Alejandro Fontan, Michael Milford, and Tobias Fischer

IEEE/CVF Winter Conference on Applications of Computer Vision 2024

RAL 2021 + IROS 2021

Probabilistic Appearance-Invariant Topometric Localization with New Place Awareness

Ming Xu, Tobias Fischer, Niko Sünderhauf, and Michael Milford

IEEE Robotics and Automation Letters 2021 · Also selected for presentation at IROS 2021