Search Results for author: Tobias Fischer

Found 40 papers, 26 papers with code

Human-in-the-Loop Segmentation of Multi-species Coral Imagery

1 code implementation15 Apr 2024 Scarlett Raine, Ross Marchant, Brano Kusy, Frederic Maire, Niko Suenderhauf, Tobias Fischer

For extremely sparsely labeled images, we propose a labeling regime based on human-in-the-loop principles, resulting in significant improvement in annotation efficiency: If only 5 point labels per image are available, our proposed human-in-the-loop approach improves on the state-of-the-art by 17. 3% for pixel accuracy and 22. 6% for mIoU; and by 10. 6% and 19. 1% when 10 point labels per image are available.

Semantic Segmentation

Know Your Neighbors: Improving Single-View Reconstruction via Spatial Vision-Language Reasoning

1 code implementation4 Apr 2024 Rui Li, Tobias Fischer, Mattia Segu, Marc Pollefeys, Luc van Gool, Federico Tombari

We propose KYN, a novel method for single-view scene reconstruction that reasons about semantic and spatial context to predict each point's density.

3D Scene Reconstruction Depth Estimation +2

Enhancing Visual Place Recognition via Fast and Slow Adaptive Biasing in Event Cameras

no code implementations25 Mar 2024 Gokul B. Nair, Michael Milford, Tobias Fischer

Event cameras are increasingly popular in robotics due to their beneficial features, such as low latency, energy efficiency, and high dynamic range.

Visual Place Recognition

Racing With ROS 2 A Navigation System for an Autonomous Formula Student Race Car

1 code implementation24 Nov 2023 Alastair Bradford, Grant van Breda, Tobias Fischer

The advent of autonomous vehicle technologies has significantly impacted various sectors, including motorsport, where Formula Student and Formula: Society of Automotive Engineers introduced autonomous racing classes.

Applications of Spiking Neural Networks in Visual Place Recognition

1 code implementation22 Nov 2023 Somayeh Hussaini, Michael Milford, Tobias Fischer

Lastly, we investigate the role of sequence matching in SNN-based VPR, a technique where consecutive images are used to refine place recognition.

Visual Place Recognition

FocusTune: Tuning Visual Localization through Focus-Guided Sampling

1 code implementation6 Nov 2023 Son Tung Nguyen, Alejandro Fontan, Michael Milford, Tobias Fischer

We propose FocusTune, a focus-guided sampling technique to improve the performance of visual localization algorithms.

regression Visual Localization

NeuroBench: A Framework for Benchmarking Neuromorphic Computing Algorithms and Systems

1 code implementation10 Apr 2023 Jason Yik, Korneel Van den Berghe, Douwe den Blanken, Younes Bouhadjar, Maxime Fabre, Paul Hueber, Denis Kleyko, Noah Pacik-Nelson, Pao-Sheng Vincent Sun, Guangzhi Tang, Shenqi Wang, Biyan Zhou, Soikat Hasan Ahmed, George Vathakkattil Joseph, Benedetto Leto, Aurora Micheli, Anurag Kumar Mishra, Gregor Lenz, Tao Sun, Zergham Ahmed, Mahmoud Akl, Brian Anderson, Andreas G. Andreou, Chiara Bartolozzi, Arindam Basu, Petrut Bogdan, Sander Bohte, Sonia Buckley, Gert Cauwenberghs, Elisabetta Chicca, Federico Corradi, Guido de Croon, Andreea Danielescu, Anurag Daram, Mike Davies, Yigit Demirag, Jason Eshraghian, Tobias Fischer, Jeremy Forest, Vittorio Fra, Steve Furber, P. Michael Furlong, William Gilpin, Aditya Gilra, Hector A. Gonzalez, Giacomo Indiveri, Siddharth Joshi, Vedant Karia, Lyes Khacef, James C. Knight, Laura Kriener, Rajkumar Kubendran, Dhireesha Kudithipudi, Yao-Hong Liu, Shih-Chii Liu, Haoyuan Ma, Rajit Manohar, Josep Maria Margarit-Taulé, Christian Mayr, Konstantinos Michmizos, Dylan Muir, Emre Neftci, Thomas Nowotny, Fabrizio Ottati, Ayca Ozcelikkale, Priyadarshini Panda, Jongkil Park, Melika Payvand, Christian Pehle, Mihai A. Petrovici, Alessandro Pierro, Christoph Posch, Alpha Renner, Yulia Sandamirskaya, Clemens JS Schaefer, André van Schaik, Johannes Schemmel, Samuel Schmidgall, Catherine Schuman, Jae-sun Seo, Sadique Sheik, Sumit Bam Shrestha, Manolis Sifalakis, Amos Sironi, Matthew Stewart, Kenneth Stewart, Terrence C. Stewart, Philipp Stratmann, Jonathan Timcheck, Nergis Tömen, Gianvito Urgese, Marian Verhelst, Craig M. Vineyard, Bernhard Vogginger, Amirreza Yousefzadeh, Fatima Tuz Zohora, Charlotte Frenkel, Vijay Janapa Reddi

The NeuroBench framework introduces a common set of tools and systematic methodology for inclusive benchmark measurement, delivering an objective reference framework for quantifying neuromorphic approaches in both hardware-independent (algorithm track) and hardware-dependent (system track) settings.


Visual Place Recognition: A Tutorial

1 code implementation6 Mar 2023 Stefan Schubert, Peer Neubert, Sourav Garg, Michael Milford, Tobias Fischer

It unifies the terminology of VPR and complements prior research in two important directions: 1) It provides a systematic introduction for newcomers to the field, covering topics such as the formulation of the VPR problem, a general-purpose algorithmic pipeline, an evaluation methodology for VPR approaches, and the major challenges for VPR and how they may be addressed.

Visual Place Recognition

Image Labels Are All You Need for Coarse Seagrass Segmentation

1 code implementation2 Mar 2023 Scarlett Raine, Ross Marchant, Brano Kusy, Frederic Maire, Tobias Fischer

Our method outperforms previous approaches that require patch-level labels on the multi-species 'DeepSeagrass' dataset by 6. 8% (absolute) for the class-weighted F1 score, and by 12. 1% (absolute) for the seagrass presence/absence F1 score on the 'Global Wetlands' dataset.

Outlier Detection

CC-3DT: Panoramic 3D Object Tracking via Cross-Camera Fusion

1 code implementation2 Dec 2022 Tobias Fischer, Yung-Hsu Yang, Suryansh Kumar, Min Sun, Fisher Yu

To track the 3D locations and trajectories of the other traffic participants at any given time, modern autonomous vehicles are equipped with multiple cameras that cover the vehicle's full surroundings.

3D Object Tracking Autonomous Vehicles +2

Boosting Performance of a Baseline Visual Place Recognition Technique by Predicting the Maximally Complementary Technique

no code implementations14 Oct 2022 Connor Malone, Stephen Hausler, Tobias Fischer, Michael Milford

One recent promising approach to the Visual Place Recognition (VPR) problem has been to fuse the place recognition estimates of multiple complementary VPR techniques using methods such as SRAL and multi-process fusion.

Visual Place Recognition

Ensembles of Compact, Region-specific & Regularized Spiking Neural Networks for Scalable Place Recognition

1 code implementation19 Sep 2022 Somayeh Hussaini, Michael Milford, Tobias Fischer

We evaluate this new scalable modular system on benchmark localization datasets Nordland and Oxford RobotCar, with comparisons to standard techniques NetVLAD, DenseVLAD, and SAD, and a previous spiking neural network system.

How Many Events do You Need? Event-based Visual Place Recognition Using Sparse But Varying Pixels

1 code implementation28 Jun 2022 Tobias Fischer, Michael Milford

Event cameras continue to attract interest due to desirable characteristics such as high dynamic range, low latency, virtually no motion blur, and high energy efficiency.

Visual Place Recognition

Point Label Aware Superpixels for Multi-species Segmentation of Underwater Imagery

no code implementations27 Feb 2022 Scarlett Raine, Ross Marchant, Brano Kusy, Frederic Maire, Tobias Fischer

We propose a point label aware method for propagating labels within superpixel regions to obtain augmented ground truth for training a semantic segmentation model.

Segmentation Semantic Segmentation +1

Hyperdimensional Feature Fusion for Out-Of-Distribution Detection

1 code implementation10 Dec 2021 Samuel Wilson, Tobias Fischer, Niko Sünderhauf, Feras Dayoub

We introduce powerful ideas from Hyperdimensional Computing into the challenging field of Out-of-Distribution (OOD) detection.

Out-of-Distribution Detection Out of Distribution (OOD) Detection

Unsupervised Complementary-aware Multi-process Fusion for Visual Place Recognition

no code implementations9 Dec 2021 Stephen Hausler, Tobias Fischer, Michael Milford

A recent approach to the Visual Place Recognition (VPR) problem has been to fuse the place recognition estimates of multiple complementary VPR techniques simultaneously.

Visual Place Recognition

Ambiguities in Direction-of-Arrival Estimation with Linear Arrays

no code implementations20 Oct 2021 Frederic Matter, Tobias Fischer, Marius Pesavento, Marc E. Pfetsch

Our approach uses Young tableaux for which a submatrix of the steering matrix has a vanishing determinant, which can be expressed through vanishing sums of unit roots.

Direction of Arrival Estimation

Spiking Neural Networks for Visual Place Recognition via Weighted Neuronal Assignments

1 code implementation14 Sep 2021 Somayeh Hussaini, Michael Milford, Tobias Fischer

Spiking neural networks (SNNs) offer both compelling potential advantages, including energy efficiency and low latencies and challenges including the non-differentiable nature of event spikes.

Template Matching Visual Place Recognition

Bio-inspired robot perception coupled with robot-modeled human perception

no code implementations31 Aug 2021 Tobias Fischer

My overarching research goal is to provide robots with perceptional abilities that allow interactions with humans in a human-like manner.

Probabilistic Appearance-Invariant Topometric Localization with New Place Awareness

1 code implementation16 Jul 2021 Ming Xu, Tobias Fischer, Niko Sünderhauf, Michael Milford

Probabilistic state-estimation approaches offer a principled foundation for designing localization systems, because they naturally integrate sequences of imperfect motion and exteroceptive sensor data.

Loop Closure Detection Visual Place Recognition

Monocular Quasi-Dense 3D Object Tracking

1 code implementation12 Mar 2021 Hou-Ning Hu, Yung-Hsu Yang, Tobias Fischer, Trevor Darrell, Fisher Yu, Min Sun

Experiments on our proposed simulation data and real-world benchmarks, including KITTI, nuScenes, and Waymo datasets, show that our tracking framework offers robust object association and tracking on urban-driving scenarios.

3D Object Tracking Autonomous Driving +3

Where is your place, Visual Place Recognition?

no code implementations11 Mar 2021 Sourav Garg, Tobias Fischer, Michael Milford

Visual Place Recognition (VPR) is often characterized as being able to recognize the same place despite significant changes in appearance and viewpoint.

Visual Place Recognition

Patch-NetVLAD: Multi-Scale Fusion of Locally-Global Descriptors for Place Recognition

3 code implementations CVPR 2021 Stephen Hausler, Sourav Garg, Ming Xu, Michael Milford, Tobias Fischer

Visual Place Recognition is a challenging task for robotics and autonomous systems, which must deal with the twin problems of appearance and viewpoint change in an always changing world.

Computational Efficiency Visual Localization +1

Intelligent Reference Curation for Visual Place Recognition via Bayesian Selective Fusion

no code implementations19 Oct 2020 Timothy L. Molloy, Tobias Fischer, Michael Milford, Girish N. Nair

A key challenge in visual place recognition (VPR) is recognizing places despite drastic visual appearance changes due to factors such as time of day, season, weather or lighting conditions.

Visual Place Recognition

Constraining the onset density of the hadron-quark phase transition with gravitational-wave observations

no code implementations6 Jun 2020 Sebastian Blacker, Niels-Uwe F. Bastian, Andreas Bauswein, David B. Blaschke, Tobias Fischer, Micaela Oertel, Theodoros Soultanis, Stefan Typel

The softening of the EoS by the PT at higher densities, i. e. after merging, leads to a characteristic increase of the dominant postmerger GW frequency f_peak relative to the tidal deformability Lambda inferred during the premerger inspiral phase.

High Energy Astrophysical Phenomena High Energy Physics - Phenomenology Nuclear Theory

Event-based visual place recognition with ensembles of temporal windows

1 code implementation22 May 2020 Tobias Fischer, Michael Milford

Event cameras are bio-inspired sensors capable of providing a continuous stream of events with low latency and high dynamic range.

Image Reconstruction Visual Place Recognition

RT-BENE: A Dataset and Baselines for Real-Time Blink Estimation in Natural Environments

1 code implementation IEEE International Conference on Computer Vision Workshops 2019 Kévin Cortacero, Tobias Fischer, Yiannis Demiris

We further incorporate our proposed RT-BENE baselines in the recently presented RT-GENE gaze estimation framework where it provides a real-time inference of the openness of the eyes.

Blink estimation Gaze Estimation

Track to Reconstruct and Reconstruct to Track

1 code implementation30 Sep 2019 Jonathon Luiten, Tobias Fischer, Bastian Leibe

Object tracking and 3D reconstruction are often performed together, with tracking used as input for reconstruction.

3D Reconstruction Multi-Object Tracking +3

Improved axion emissivity from a supernova via nucleon-nucleon bremsstrahlung

no code implementations27 Jun 2019 Pierluca Carenza, Tobias Fischer, Maurizio Giannotti, Gang Guo, Gabriel Martinez-Pinedo, Alessandro Mirizzi

We find that the axion emissivity is reduced by over an order of magnitude with respect to the basic OPE calculation, after all these effects are accounted for.

High Energy Physics - Phenomenology Solar and Stellar Astrophysics

RT-GENE: Real-Time Eye Gaze Estimation in Natural Environments

1 code implementation ECCV 2018 Tobias Fischer, Hyung Jin Chang, Yiannis Demiris

We first record a novel dataset of varied gaze and head pose images in a natural environment, addressing the issue of ground truth annotation by measuring head pose using a motion capture system and eye gaze using mobile eyetracking glasses.

Gaze Estimation Image Inpainting

Context-aware Deep Feature Compression for High-speed Visual Tracking

1 code implementation CVPR 2018 Jongwon Choi, Hyung Jin Chang, Tobias Fischer, Sangdoo Yun, Kyuewang Lee, Jiyeoup Jeong, Yiannis Demiris, Jin Young Choi

We propose a new context-aware correlation filter based tracking framework to achieve both high computational speed and state-of-the-art performance among real-time trackers.

Denoising Feature Compression +3

Kinematic Structure Correspondences via Hypergraph Matching

no code implementations CVPR 2016 Hyung Jin Chang, Tobias Fischer, Maxime Petit, Martina Zambelli, Yiannis Demiris

In this paper, we present a novel framework for finding the kinematic structure correspondence between two objects in videos via hypergraph matching.

Hypergraph Matching

Revisiting the SN1987A gamma-ray limit on ultralight axion-like particles

no code implementations14 Oct 2014 Alexandre Payez, Carmelo Evoli, Tobias Fischer, Maurizio Giannotti, Alessandro Mirizzi, Andreas Ringwald

We revise the bound from the supernova SN1987A on the coupling of ultralight axion-like particles (ALPs) to photons.

High Energy Astrophysical Phenomena High Energy Physics - Phenomenology

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