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Herein, the problem of simultaneous localization of multiple sources given a number of energy samples at different locations is examined. The strategies do not require knowledge of the signal propagation models, nor do they exploit the…

Information Theory · Computer Science 2019-02-13 Junting Chen , Urbashi Mitra

This work localizes a molecular source in a diffusion based molecular communication (DbMC) system via a set of passive sensors and a fusion center. Molecular source localization finds its applications in future healthcare systems, including…

Signal Processing · Electrical Eng. & Systems 2019-07-10 Henry Ernest Baidoo-Williams , Muhammad Mahboob Ur Rahman , Qammer Hussain Abbasi

Direction-of-arrival estimation of multiple speakers in a room is an important task for a wide range of applications. In particular, challenging environments with moving speakers, reverberation and noise, lead to significant performance…

Audio and Speech Processing · Electrical Eng. & Systems 2024-09-24 Daniel A. Mitchell , Boaz Rafaely , Anurag Kumar , Vladimir Tourbabin

In this paper, the multiple-source ellipsoidal localization problem based on acoustic energy measurements is investigated via set-membership estimation theory. When the probability density function of measurement noise is…

Information Theory · Computer Science 2019-11-19 Fanqin Meng , Xiaojing Shen , Zhiguo Wang , Haiqi Liu , Junfeng Wang , Yunmin Zhu , Pramod K. Varshney

Accurately localizing 3D sound sources and estimating their semantic labels -- where the sources may not be visible, but are assumed to lie on the physical surface of objects in the scene -- have many real applications, including detecting…

Sound · Computer Science 2024-12-31 Yuhang He , Sangyun Shin , Anoop Cherian , Niki Trigoni , Andrew Markham

In this work we address the challenging problem of 3D human pose estimation from single images. Recent approaches learn deep neural networks to regress 3D pose directly from images. One major challenge for such methods, however, is the…

Computer Vision and Pattern Recognition · Computer Science 2017-09-07 Umar Iqbal , Andreas Doering , Hashim Yasin , Björn Krüger , Andreas Weber , Juergen Gall

In this paper, we consider a single-anchor localization system assisted by a reconfigurable intelligent surface (RIS), where the objective is to localize multiple user equipments (UEs) placed in the radiative near-field region of the RIS by…

Signal Processing · Electrical Eng. & Systems 2024-09-24 Parisa Ramezani , Alva Kosasih , Emil Björnson

We address the problem of localizing multiple sources in 3D by combining sensor array measurements with camera observations. We propose a fusion framework extending the covariance matrix fitting method with an unbalanced optimal transport…

Signal Processing · Electrical Eng. & Systems 2026-04-01 Ilyes Jaouedi , Gilles Chardon , José Picheral

A theoretical study is performed to analyze the directional response of different types of microphone array designs. 1-D (linear) and 2-D (planar) microphone array types are considered, and the delay and sum beamforming and conventional…

Sound · Computer Science 2024-03-27 Dheepak Khatri , Kenneth Granlund

This paper is concerned with uniqueness, phase retrieval and shape reconstruction methods for solving inverse electromagnetic source scattering problems with multi-frequency sparse phased or phaseless far field data. With the phased data,…

Analysis of PDEs · Mathematics 2019-06-07 Xia Ji , Xiaodong Liu

We present a novel acceleration technique for improving the convergence of source iteration for discrete ordinates transport calculations. Our approach uses the idea of the dynamic mode decomposition (DMD) to estimate the slowly decaying…

Computational Physics · Physics 2018-12-14 Ryan G. McClarren , Terry S. Haut

Deploying multiple unmanned aerial vehicles (UAVs) to locate a signal-emitting source covers a wide range of military and civilian applications like rescue and target tracking. It is well known that the UAVs-source (sensors-target)…

Signal Processing · Electrical Eng. & Systems 2024-07-19 Xin Cheng , Guangjie Han , Jinlin Peng , Jinfang Jiang , Yu He , Weiqiang Zhu , Feng Shu , Jiangzhou Wang

Localization of radio frequency sources over multipath channels is a difficult problem arising in applications such as outdoor or indoor gelocation. Common approaches that combine ad-hoc methods for multipath mitigation with indirect…

Information Theory · Computer Science 2015-05-14 Nil Garcia , Alexander M. Haimovich , Martial Coulon , Jason A. Dabin

Sound source localization aims to seek the direction of arrival (DOA) of all sound sources from the observed multi-channel audio. For the practical problem of unknown number of sources, existing localization algorithms attempt to predict a…

Audio and Speech Processing · Electrical Eng. & Systems 2022-06-27 Yanjie Fu , Meng Ge , Haoran Yin , Xinyuan Qian , Longbiao Wang , Gaoyan Zhang , Jianwu Dang

This purpose of this paper is to locate a single localized source from three range measurements with multiplicative noises. Although some minimization approaches for additive noise have been found, studies on the existence of solutions are…

Signal Processing · Electrical Eng. & Systems 2020-05-04 Kiwoon Kwon

Determining the positions of neurons in an extracellular recording is useful for investigating functional properties of the underlying neural circuitry. In this work, we present a Bayesian modelling approach for localizing the source of…

Neurons and Cognition · Quantitative Biology 2022-01-28 Cole L. Hurwitz , Kai Xu , Akash Srivastava , Alessio P. Buccino , Matthias H. Hennig

One major challenge for 3D pose estimation from a single RGB image is the acquisition of sufficient training data. In particular, collecting large amounts of training data that contain unconstrained images and are annotated with accurate 3D…

Computer Vision and Pattern Recognition · Computer Science 2016-03-29 Hashim Yasin , Umar Iqbal , Björn Krüger , Andreas Weber , Juergen Gall

We propose a channel selection method for hearing aid applications using remote microphones, in the presence of multiple competing talkers. The proposed channel selection method uses the hearing aid user's head-steering direction to…

Audio and Speech Processing · Electrical Eng. & Systems 2025-12-01 Vasudha Sathyapriyan , Michael S. Pedersen , Mike Brookes , Jan Østergaard , Patrick A. Naylor , Jesper Jensen

The EEG source localization is an ill-posed problem. It involves estimation of the sources which outnumbers the number of measurements. For a given measurement at given time all sources are not active which makes the problem as sparse…

Signal Processing · Electrical Eng. & Systems 2022-02-02 Teja Mannepalli , Aurobinda Routray

We present a system for localizing sound sources in a room with several ad-hoc microphone arrays. Each circular array performs direction of arrival (DOA) estimation independently using commercial software. The DOAs are fed to a fusion…