Search Results for author: Florian Meyer

Found 35 papers, 3 papers with code

A New Statistical Model for Waveguide Invariant-Based Range Estimation in Shallow Water

no code implementations3 Dec 2024 Junsu Jang, Florian Meyer

In the undersea environment, positioning is often challenging, and thus, ranging based on passive acoustic data can provide valuable information for subsurface navigation and source localization.

A New Architecture for Neural Enhanced Multiobject Tracking

no code implementations8 Oct 2024 Shaoxiu Wei, Mingchao Liang, Florian Meyer

In particular, in problems where plenty of labeled data for the training of neural networks is available, data-driven MOT tends to have advantages compared to traditional methods.

Autonomous Driving

Direct Multipath-Based SLAM

no code implementations30 Sep 2024 Mingchao Liang, Erik Leitinger, Florian Meyer

The factor graph is the starting point for the development of an efficient belief propagation (BP) method for multipath-based SLAM that avoids data preprocessing by a channel estimator.

Position Simultaneous Localization and Mapping

Particle Flows for Source Localization in 3-D Using TDOA Measurements

no code implementations30 Aug 2024 Wenyu Zhang, Mohammad Javad Khojasteh, Florian Meyer

Our numerical results demonstrate that the proposed method can correctly determine the number of sources and provide accurate location estimates.

ISR: Invertible Symbolic Regression

no code implementations10 May 2024 Tony Tohme, Mohammad Javad Khojasteh, Mohsen Sadr, Florian Meyer, Kamal Youcef-Toumi

The proposed ISR method naturally combines the principles of Invertible Neural Networks (INNs) and Equation Learner (EQL), a neural network-based symbolic architecture for function learning.

Density Estimation regression +1

Multiobject Tracking for Thresholded Cell Measurements

no code implementations11 Mar 2024 Thomas Kropfreiter, Jason L. Williams, Florian Meyer

Our numerical results demonstrate the advantages of the proposed method that relies on thresholded cell measurements compared to the conventional multiobject tracking based on point measurements with and without AM.

A Probabilistic Focalization Approach for Single Receiver Underwater Localization

no code implementations6 Mar 2024 Luisa Watkins, Pietro Stinco, Alessandra Tesei, Florian Meyer

We introduce a Bayesian estimation approach for the passive localization of an acoustic source in shallow water using a single mobile receiver.

Learning Dynamics from Multicellular Graphs with Deep Neural Networks

1 code implementation22 Jan 2024 Haiqian Yang, Florian Meyer, Shaoxun Huang, Liu Yang, Cristiana Lungu, Monilola A. Olayioye, Markus J. Buehler, Ming Guo

Multicellular self-assembly into functional structures is a dynamic process that is critical in the development and diseases, including embryo development, organ formation, tumor invasion, and others.

Graph Neural Network

A Belief Propagation Approach for Direct Multipath-Based SLAM

no code implementations24 Dec 2023 Mingchao Liang, Erik Leitinger, Florian Meyer

This factor graph is the starting point for the development of an efficient belief propagation (BP) method for multipath-based SLAM that directly uses received radio signals as measurements.

Simultaneous Localization and Mapping

Graph-based Simultaneous Localization and Bias Tracking

no code implementations4 Oct 2023 Alexander Venus, Erik Leitinger, Stefan Tertinek, Florian Meyer, Klaus Witrisal

We demonstrate that the position-related information enables the algorithm to provide high-accuracy position estimates even in fully obstructed line-of-sight (OLOS) situations.

Position

Track Coalescence and Repulsion in Multitarget Tracking: An Analysis of MHT, JPDA, and Belief Propagation Methods

no code implementations11 Aug 2023 Thomas Kropfreiter, Florian Meyer, David F. Crouse, Stefano Coraluppi, Franz Hlawatsch, Peter Willett

Joint probabilistic data association (JPDA) filter methods and multiple hypothesis tracking (MHT) methods are widely used for multitarget tracking (MTT).

A BP Method for Track-Before-Detect

no code implementations3 Jul 2023 Mingchao Liang, Thomas Kropfreiter, Florian Meyer

Our proposed method is based on a new statistical model that introduces a new object hypothesis for each data cell of the raw sensor measurements.

Navigation in shallow water using passive acoustic ranging

no code implementations10 Jun 2023 Junsu Jang, Florian Meyer

The ability to compute the range rate and range measurements from the pressure field measured using a single hydrophone is demonstrated on real data from the SWellEx-96 experiment.

Message Passing-Based 9-D Cooperative Localization and Navigation with Embedded Particle Flow

no code implementations3 Jan 2023 Lukas Wielandner, Erik Leitinger, Florian Meyer, Klaus Witrisal

However, particle-based BP algorithms are known to suffer from particle degeneracy in large and dense networks of mobile agents with high-dimensional states.

Multisensor Multiobject Tracking with Improved Sampling Efficiency

no code implementations30 Dec 2022 Wenyu Zhang, Florian Meyer

We perform a numerical evaluation in a passive acoustic monitoring scenario where multiple sources are tracked in 3-D from 1-D time-difference-of-arrival (TDOA) measurements provided by pairs of hydrophones.

Object object-detection +3

Active Planning for Cooperative Localization: A Fisher Information Approach

no code implementations30 Dec 2022 Wenyu Zhang, Bryan Teague, Florian Meyer

A numerical case study demonstrates the intelligent behavior of a single controlled anchor in a 3-D scenario and the resulting significantly improved localization accuracy.

Neural Enhanced Belief Propagation for Multiobject Tracking

no code implementations16 Dec 2022 Mingchao Liang, Florian Meyer

State-of-the-art MOT methods fully rely on a statistical model and typically use preprocessed sensor data as measurements.

Autonomous Driving Autonomous Navigation +1

Data Fusion for Multipath-Based SLAM: Combining Information from Multiple Propagation Paths

no code implementations16 Nov 2022 Erik Leitinger, Alexander Venus, Bryan Teague, Florian Meyer

A key aspect of the proposed estimation method based on MVAs is to check the availability of singlebounce and double-bounce propagation paths at a specific agent position by means of ray-launching.

Indoor Localization Simultaneous Localization and Mapping +1

Bayesian Detection and Tracking of Odontocetes in 3-D from Their Echolocation Clicks

no code implementations22 Oct 2022 Junsu Jang, Florian Meyer, Eric R. Snyder, Sean M. Wiggins, Simone Baumann-Pickering, John A. Hildebrand

Time-difference-of-arrival (TDOA) measurements of echolocation clicks emitted by odontocetes can be extracted and used for detection, localization, and tracking in 3-D. We propose a data processing chain that automatically detects and tracks multiple odontocetes in 3-D from their echolocation clicks.

Graph-based sequential beamforming

1 code implementation26 Aug 2022 Yongsung Park, Florian Meyer, Peter Gerstoft

At each time step, belief propagation predicts the number of DOAs and their DOAs using posterior probability density functions (pdfs) from the previous time and a different Bernoulli-von Mises state transition model.

Bayesian Inference

Trajectory PMB Filters for Extended Object Tracking Using Belief Propagation

1 code implementation20 Jul 2022 Yuxuan Xia, Ángel F. García-Fernández, Florian Meyer, Jason L. Williams, Karl Granström, Lennart Svensson

First, we present a PMBM conjugate prior on the posterior of sets of trajectories for a generalized measurement model, in which each object generates an independent set of measurements.

Object Object Tracking

Data Fusion for Radio Frequency SLAM with Robust Sampling

no code implementations20 Jun 2022 Erik Leitinger, Bryan Teague, Wenyu Zhang, Mingchao Liang, Florian Meyer

A promising approach to address this problem is to exchange radio signals between mobile agents and static physical anchors (PAs) that bounce off flat surfaces in the indoor environment.

Indoor Localization Simultaneous Localization and Mapping

Neural Enhanced Belief Propagation for Data Association in Multiobject Tracking

no code implementations17 Mar 2022 Mingchao Liang, Florian Meyer

Situation-aware technologies enabled by multiobject tracking (MOT) methods will create new services and applications in fields such as autonomous navigation and applied ocean sciences.

Autonomous Driving Autonomous Navigation

Fusion of Sensor Measurements and Target-Provided Information in Multitarget Tracking

no code implementations26 Nov 2021 Domenico Gaglione, Paolo Braca, Giovanni Soldi, Florian Meyer, Franz Hlawatsch, Moe Z. Win

Here, we develop a statistical model and algorithm for tracking an unknown number of targets based on the probabilistic fusion of observations from two classes of data sources.

Acoustic Source Localization in Shallow Water: A Probabilistic Focalization Approach

no code implementations14 Sep 2021 Florian Meyer, Kay L. Gemba

This paper presents a Bayesian estimation method for the passive localization of an acoustic source in shallow water.

An Efficient Labeled/Unlabeled Random Finite Set Algorithm for Multiobject Tracking

no code implementations11 Sep 2021 Thomas Kropfreiter, Florian Meyer, Franz Hlawatsch

Only if a quantity characterizing the plausibility of object existence is above a threshold, a new labeled Bernoulli component is created and the object is tracked by the more accurate but more computationally demanding LMB part of the algorithm.

Object

A Scalable Track-Before-Detect Method With Poisson/Multi-Bernoulli Model

no code implementations3 Sep 2021 Thomas Kropfreiter, Jason L. Williams, Florian Meyer

We propose a scalable track-before-detect (TBD) tracking method based on a Poisson/multi-Bernoulli model.

Track Coalescence and Repulsion: MHT, JPDA, and BP

no code implementations3 Sep 2021 Thomas Kropfreiter, Florian Meyer, Stefano Coraluppi, Craig Carthel, Rico Mendrzik, Peter Willett

In particular, JPDA suffers from the track coalescence effect, i. e., estimated tracks of targets in close proximity tend to merge and can become indistinguishable.

Probabilistic Scan Matching: Bayesian Pose Estimation from Point Clouds

no code implementations8 Jun 2021 Rico Mendrzik, Florian Meyer

We formulate a holistic Bayesian estimation problem for both data association and pose estimation and present the corresponding joint factor graph.

Autonomous Navigation Pose Estimation +1

Neural Enhanced Belief Propagation for Cooperative Localization

no code implementations27 May 2021 Mingchao Liang, Florian Meyer

Location-aware networks will introduce innovative services and applications for modern convenience, applied ocean sciences, and public safety.

Graph Neural Network

Scalable Detection and Tracking of Geometric Extended Objects

no code implementations21 Mar 2021 Florian Meyer, Jason L. Williams

The proposed method dynamically introduces states of newly detected objects, efficiently performs probabilistic multiple-measurement to object association, and jointly infers the geometric shapes of objects.

Autonomous Driving Clustering +3

Graph-Based Multiobject Tracking with Embedded Particle Flow

no code implementations16 Mar 2021 Wenyu Zhang, Florian Meyer

Seamless situational awareness provided by modern radar systems relies on effective methods for multiobject tracking (MOT).

Object object-detection +1

QMA: A Resource-efficient, Q-Learning-based Multiple Access Scheme for the IIoT

no code implementations11 Jan 2021 Florian Meyer, Volker Turau

Results show that QMA considerably increases reliability and throughput in comparison to CSMA/CA, especially in networks with a high load.

Q-Learning Networking and Internet Architecture C.2.2

Classification-Aided Multitarget Tracking Using the Sum-Product Algorithm

no code implementations4 Aug 2020 Domenico Gaglione, Giovanni Soldi, Paolo Braca, Giovanni De Magistris, Florian Meyer, Franz Hlawatsch

Multitarget tracking (MTT) is a challenging task that aims at estimating the number of targets and their states from measurements of the target states provided by one or multiple sensors.

Classification General Classification

Sigma Point Belief Propagation

no code implementations2 Sep 2013 Florian Meyer, Ondrej Hlinka, Franz Hlawatsch

Here, we extend the SP filter to nonsequential Bayesian inference corresponding to loopy factor graphs.

Bayesian Inference

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