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This work presents an investigation on the scalability of a deep leaning (DL)-based blind transmitter positioning system for addressing the multi transmitter localization (MLT) problem. The proposed approach is able to estimate relative…

Signal Processing · Electrical Eng. & Systems 2023-06-07 Ivo Bizon , Ahmad Nimr , Philipp Schulz , Marwa Chafii , Gerhard P. Fettweis

Indoor human positioning has become increasingly important for applications such as health monitoring, breath monitoring, human identification, safety and rescue operations, and security surveillance. However, achieving robust indoor human…

Signal Processing · Electrical Eng. & Systems 2024-03-08 Amala Sonny , Abhinav Kumar , Linga Reddy Cenkeramaddi

In this paper, we present a new solution to the problem of large-scale multi-building and multi-floor indoor localization based on linked neural networks, where each neural network is dedicated to a sub-problem and trained under a…

Machine Learning · Computer Science 2024-09-18 Sihao Li , Kyeong Soo Kim , Zhe Tang , Graduate , Jeremy S. Smith

Multiple-input multiple-output (MIMO) is an enabling technology to meet the growing demand for faster and more reliable communications in wireless networks with a large number of terminals, but it can also be applied for position estimation…

Signal Processing · Electrical Eng. & Systems 2021-08-06 Gregor Cerar , Aleš Švigelj , Mihael Mohorčič , Carolina Fortuna , Tomaž Javornik

In the context of supervised learning of a function by a neural network, we claim and empirically verify that the neural network yields better results when the distribution of the data set focuses on regions where the function to learn is…

Machine Learning · Statistics 2022-09-28 Paul Novello , Gaël Poëtte , David Lugato , Pietro Congedo

In the last decade, the rapid development of deep learning (DL) has made it possible to perform automatic, accurate, and robust Change Detection (CD) on large volumes of Remote Sensing Images (RSIs). However, despite advances in CD methods,…

Computer Vision and Pattern Recognition · Computer Science 2025-02-06 Lei Ding , Danfeng Hong , Maofan Zhao , Hongruixuan Chen , Chenyu Li , Jie Deng , Naoto Yokoya , Lorenzo Bruzzone , Jocelyn Chanussot

Wi-Fi fingerprinting is widely applied for indoor localization due to the widespread availability of Wi-Fi devices. However, traditional methods are not ideal for multi-building and multi-floor environments due to the scalability issues.…

Machine Learning · Computer Science 2024-07-19 Sihao Li , Zhe Tang , Kyeong Soo Kim , Jeremy S. Smith

Fine-grained image classification is to recognize hundreds of subcategories in each basic-level category. Existing methods employ discriminative localization to find the key distinctions among subcategories. However, they generally have two…

Computer Vision and Pattern Recognition · Computer Science 2018-05-08 Xiangteng He , Yuxin Peng , Junjie Zhao

Wireless communication networks rely heavily on channel state information (CSI) to make informed decision for signal processing and network operations. However, the traditional CSI acquisition methods is facing many difficulties:…

Information Theory · Computer Science 2015-08-25 Jingchu Liu , Ruichen Deng , Sheng Zhou , Zhisheng Niu

With widely deployed WiFi network and the uniqueness feature (fingerprint) of wireless channel information, fingerprinting based WiFi positioning is currently the mainstream indoor positioning method, in which fingerprint database…

Networking and Internet Architecture · Computer Science 2019-10-14 Qiyue Li , Heng Qu , Zhi Liu , Nana Zhou , Wei Sun , Stephan Sigg , Jie Li

Weakly supervised object localization is a challenging task in which the object of interest should be localized while learning its appearance. State-of-the-art methods recycle the architecture of a standard CNN by using the activation maps…

Computer Vision and Pattern Recognition · Computer Science 2020-12-03 Akhil Meethal , Marco Pedersoli , Soufiane Belharbi , Eric Granger

The abundance of modern health data provides many opportunities for the use of machine learning techniques to build better statistical models to improve clinical decision making. Predicting time-to-event distributions, also known as…

Machine Learning · Statistics 2020-12-15 Zidi Xiu , Chenyang Tao , Benjamin A. Goldstein , Ricardo Henao

This paper presents a novel hybrid deep learning framework designed to enhance the robustness of CSI-based Human Activity Recognition (HAR) within bandwidth-constrained Wi-Fi sensing environments. The core of our proposed methodology is a…

Signal Processing · Electrical Eng. & Systems 2026-02-10 Alison M. Fernandes , Hermes I. Del Monego , Bruno S. Chang , Anelise Munaretto , Hélder M. Fontes , Rui Campos

In this paper, we propose a robust and parsimonious approach using Deep Convolutional Neural Network (DCNN) to recognize and interpret interior space. DCNN has achieved incredible success in object and scene recognition. In this study we…

Computer Vision and Pattern Recognition · Computer Science 2016-10-11 Fan Zhang , Fabio Duarte , Ruixian Ma , Dimitrios Milioris , Hui Lin , Carlo Ratti

Cross-view geo-localization aims to match images of the same target from different platforms, e.g., drone and satellite. It is a challenging task due to the changing appearance of targets and environmental content from different views. Most…

Computer Vision and Pattern Recognition · Computer Science 2024-11-04 Quan Chen , Tingyu Wang , Zihao Yang , Haoran Li , Rongfeng Lu , Yaoqi Sun , Bolun Zheng , Chenggang Yan

Reconfigurable intelligent surface (RIS) has recently gained popularity as a promising solution for improving the signal transmission quality of wireless communications with less hardware cost and energy consumption. This letter offers a…

Signal Processing · Electrical Eng. & Systems 2022-05-19 Wangyang Xu , Jiancheng An , Chongwen Huang , Lu Gan , Chau Yuen

This paper addresses the problem of dense depth predictions from sparse distance sensor data and a single camera image on challenging weather conditions. This work explores the significance of different sensor modalities such as camera,…

Computer Vision and Pattern Recognition · Computer Science 2020-12-18 Sadique Adnan Siddiqui , Axel Vierling , Karsten Berns

Direction finding and positioning systems based on RF signals are significantly impacted by multipath propagation, particularly in indoor environments. Existing algorithms (e.g MUSIC) perform poorly in resolving Angle of Arrival (AoA) in…

Signal Processing · Electrical Eng. & Systems 2021-12-13 Zhuangzhuang Dai , Yuhang He , Tran Vu , Niki Trigoni , Andrew Markham

Evolving Internet-of-Things (IoT) applications often require the use of sensor-based indoor tracking and positioning, for which the performance is significantly improved by identifying the type of the surrounding indoor environment. This…

Signal Processing · Electrical Eng. & Systems 2020-01-08 Mohamed I. AlHajri , Nazar T. Ali , Raed M. Shubair

This paper presents DeepCRF, a new framework that harnesses deep learning to extract subtle micro-signals from channel state information (CSI) measurements, enabling robust and resilient radio-frequency fingerprinting (RFF) of…

Signal Processing · Electrical Eng. & Systems 2024-11-12 Ruiqi Kong , He Chen