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Transfer learning using deep neural networks as feature extractors has become increasingly popular over the past few years. It allows to obtain state-of-the-art accuracy on datasets too small to train a deep neural network on its own, and…

Machine Learning · Computer Science 2017-10-25 Vincent Gripon , Ghouthi B. Hacene , Matthias Löwe , Franck Vermet

Accurately determining the origin of radio emissions is essential for numerous scientific experiments, particularly in radio astronomy. Conventional techniques, such as the use of antenna arrays encounter significant challenges, specially…

Applied Physics · Physics 2024-10-01 Harsha Aviansh Tanti , Abhirup Datta , Tiasha Biswas , Anshuman Tripathi

This paper presents a data processing algorithm with machine learning for polarization extraction and event selection applied to photoelectron track images taken with X-ray polarimeters. The method uses a convolutional neural network (CNN)…

Instrumentation and Methods for Astrophysics · Physics 2019-09-04 Takao Kitaguchi , Kevin Black , Teruaki Enoto , Asami Hayato , Joanne E. Hill , Wataru B. Iwakiri , Philip Kaaret , Tsunefumi Mizuno , Toru Tamagawa

The detection of oriented objects is frequently appeared in the field of natural scene text detection as well as object detection in aerial images. Traditional detectors for oriented objects are common to rotate anchors on the basis of the…

Computer Vision and Pattern Recognition · Computer Science 2020-05-11 Haoran Wei , Yue Zhang , Zhonghan Chang , Hao Li , Hongqi Wang , Xian Sun

The time difference of arrival (TDOA) problem admits exact, purely algebraic solutions for the situation in which there are 4 and 5 sensors and a single source whose position is to be determined in 3 dimensions. The solutions are exact in…

Signal Processing · Electrical Eng. & Systems 2025-01-09 Niraj K. Inamdar

Finding and classifying astronomical sources is key in the scientific exploitation of radio surveys. Source-finding usually involves identifying the parts of an image belonging to an astronomical source, against some estimated background.…

Instrumentation and Methods for Astrophysics · Physics 2019-12-20 V. Lukic , F. De Gasperin , M. Brüggen

We consider the problem of estimating the direction-of-arrival (DoA) of a desired source located in a known region of interest in the presence of interfering sources and multipath. We propose an approach that precedes the DoA estimation and…

Signal Processing · Electrical Eng. & Systems 2024-09-13 Amitay Bar , Joseph S. Picard , Israel Cohen , Ronen Talmon

In this paper, we present a new model for Direction of Arrival (DOA) estimation of sound sources based on an Icosahedral Convolutional Neural Network (CNN) applied over SRP-PHAT power maps computed from the signals received by a microphone…

Audio and Speech Processing · Electrical Eng. & Systems 2022-12-07 David Diaz-Guerra , Antonio Miguel , Jose R. Beltran

Rotation estimation of high precision from an RGB-D object observation is a huge challenge in 6D object pose estimation, due to the difficulty of learning in the non-linear space of SO(3). In this paper, we propose a novel rotation…

Computer Vision and Pattern Recognition · Computer Science 2023-08-22 Jiehong Lin , Zewei Wei , Yabin Zhang , Kui Jia

In this paper a robust algorithm for DOA estimation of coherent sources in presence of antenna array imperfections is presented. We exploit the current advances of deep learning to overcome two of the most common problems facing the state…

Signal Processing · Electrical Eng. & Systems 2020-05-07 Aya Mostafa Ahmed , Omar Eissa , Aydin Sezgin

Automatic airplane detection in aerial imagery has a variety of applications. Two of the significant challenges in this task are variations in the scale and direction of the airplanes. To solve these challenges, we present a…

Computer Vision and Pattern Recognition · Computer Science 2020-11-03 Mohammad Reza Mohammadi

We propose a novel method for interpreting neural networks, focusing on convolutional neural network-based receiver model. The method identifies which unit or units of the model contain most (or least) information about the channel…

Machine Learning · Computer Science 2025-05-26 Marko Tuononen , Dani Korpi , Ville Hautamäki

In this paper, we present a spectrum monitoring framework for the detection of radar signals in spectrum sharing scenarios. The core of our framework is a deep convolutional neural network (CNN) model that enables Measurement Capable…

Networking and Internet Architecture · Computer Science 2017-05-02 Ahmed Selim , Francisco Paisana , Jerome A. Arokkiam , Yi Zhang , Linda Doyle , Luiz A. DaSilva

For autonomous navigation, accurate localization with respect to a map is needed. In urban environments, infrastructure such as buildings or bridges cause major difficulties to Global Navigation Satellite Systems (GNSS) and, despite…

Computer Vision and Pattern Recognition · Computer Science 2024-12-16 Maxime Noizet , Philippe Xu , Philippe Bonnifait

The increased presence of advanced sensors on the production floors has led to the collection of datasets that can provide significant insights into machine health. An important and reliable indicator of machine health, vibration signal…

Signal Processing · Electrical Eng. & Systems 2021-02-04 Rishikesh Magar , Lalit Ghule , Junhan Li , Yang Zhao , Amir Barati Farimani

This paper addresses the task of set prediction using deep learning. This is important because the output of many computer vision tasks, including image tagging and object detection, are naturally expressed as sets of entities rather than…

Computer Vision and Pattern Recognition · Computer Science 2017-08-14 S. Hamid Rezatofighi , Vijay Kumar B G , Anton Milan , Ehsan Abbasnejad , Anthony Dick , Ian Reid

Variants of accuracy and precision are the gold-standard by which the computer vision community measures progress of perception algorithms. One reason for the ubiquity of these metrics is that they are largely task-agnostic; we in general…

Computer Vision and Pattern Recognition · Computer Science 2020-04-21 Jonah Philion , Amlan Kar , Sanja Fidler

Drone detection is the problem of finding the smallest rectangle that encloses the drone(s) in a video sequence. In this study, we propose a solution using an end-to-end object detection model based on convolutional neural networks. To…

Computer Vision and Pattern Recognition · Computer Science 2017-06-20 Cemal Aker , Sinan Kalkan

In this paper, we propose an extension to the Propagator algorithm for source bearing estimation by performing root decomposition which eliminates the need for spectral search over angles. Further the propagator spatial spectrum is reused…

Signal Processing · Electrical Eng. & Systems 2025-01-27 Pradeep Dheerendra , Zoltan Derzsi

This paper investigates the joint localization, detection, and tracking of sound events using a convolutional recurrent neural network (CRNN). We use a CRNN previously proposed for the localization and detection of stationary sources, and…

Sound · Computer Science 2019-04-30 Sharath Adavanne , Archontis Politis , Tuomas Virtanen