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Understanding specifically where a model focuses on within an image is critical for human interpretability of the decision-making process. Deep learning-based solutions are prone to learning coincidental correlations in training datasets,…

计算机视觉与模式识别 · 计算机科学 2024-10-22 Aidan Boyd , Mohamed Trabelsi , Huseyin Uzunalioglu , Dan Kushnir

Thanks to the ubiquitousness of Wi-Fi access points and devices, Wi-Fi sensing enables transformative applications in remote health care, security, and surveillance. Existing work has explored the usage of machine learning on channel state…

网络与互联网体系结构 · 计算机科学 2022-04-21 Niloofar Bahadori , Jonathan Ashdown , Francesco Restuccia

This survey presents a comprehensive analysis of data augmentation techniques in human-centric vision tasks, a first of its kind in the field. It delves into a wide range of research areas including person ReID, human parsing, human pose…

计算机视觉与模式识别 · 计算机科学 2024-03-14 Wentao Jiang , Yige Zhang , Shaozhong Zheng , Si Liu , Shuicheng Yan

Localization services for wireless devices play an increasingly important role in our daily lives and a plethora of emerging services and applications already rely on precise position information. Widely used on-device positioning methods,…

信号处理 · 电气工程与系统科学 2024-01-17 Pengzhi Huang , Emre Gönültaş , Maximilian Arnold , K. Pavan Srinath , Jakob Hoydis , Christoph Studer

WiFi Channel State Information (CSI)-based human activity recognition (HAR) provides a privacy-preserving, device-free sensing solution for smart environments. However, its deployment on edge devices is severely constrained by domain shift,…

机器学习 · 计算机科学 2025-10-31 Kexing Liu

This paper compares the performance of BiLSTM and CNN+GRU deep learning models for Human Activity Recognition (HAR) on two WiFi-based Channel State Information (CSI) datasets: UT-HAR and NTU-Fi HAR. The findings indicate that the CNN+GRU…

计算机视觉与模式识别 · 计算机科学 2025-06-16 Almustapha A. Wakili , Babajide J. Asaju , Woosub Jung

This paper explores the use of ambient radio frequency (RF) signals for human presence detection through deep learning. Using WiFi signal as an example, we demonstrate that the channel state information (CSI) obtained at the receiver…

机器学习 · 计算机科学 2020-12-11 Yang Liu , Tiexing Wang , Yuexin Jiang , Biao Chen

The generalization ability of visuomotor policy is crucial, as a good policy should be deployable across diverse scenarios. Some methods can collect large amounts of trajectory augmentation data to train more generalizable imitation…

机器人学 · 计算机科学 2025-11-14 Hanwen Wang

Wireless sensing is of great benefits to our daily lives. However, wireless signals are sensitive to the surroundings. Various factors, e.g. environments, locations, and individuals, may induce extra impact on wireless propagation. Such a…

机器学习 · 计算机科学 2025-02-13 Rui Zhou , Yu Cheng , Songlin Li , Hongwang Zhang , Chenxu Liu

Recently, with the advancement of the Internet of Things (IoT), WiFi CSI-based HAR has gained increasing attention from academic and industry communities. By integrating the deep learning technology with CSI-based HAR, researchers achieve…

信号处理 · 电气工程与系统科学 2023-08-07 Ke Xu , Jiangtao Wang , Hongyuan Zhu , Dingchang Zheng

In the Machine Learning research community, there is a consensus regarding the relationship between model complexity and the required amount of data and computation power. In real world applications, these computational requirements are not…

机器学习 · 计算机科学 2022-08-03 Joao Fonseca , Fernando Bacao

Data augmentation is a technique to improve the generalization ability of machine learning methods by increasing the size of the dataset. However, since every augmentation method is not equally effective for every dataset, you need to…

机器学习 · 计算机科学 2022-05-31 Daisuke Oba , Shinnosuke Matsuo , Brian Kenji Iwana

Human Activity Recognition (HAR) has recently received remarkable attention in numerous applications such as assisted living and remote monitoring. Existing solutions based on sensors and vision technologies have obtained achievements but…

计算机视觉与模式识别 · 计算机科学 2022-05-25 Yanling Hao , Zhiyuan Shi , Yuanwei Liu

Performance on benchmark datasets has drastically improved with advances in deep learning. Still, cross-dataset generalization performance remains relatively low due to the domain shift that can occur between two different datasets. This…

计算机视觉与模式识别 · 计算机科学 2019-01-08 Alexandra Carlson , Katherine A. Skinner , Ram Vasudevan , Matthew Johnson-Roberson

Objects in an environment affect electromagnetic waves. While this effect varies across frequencies, there exists a correlation between them, and a model with enough capacity can capture this correlation between the measurements in…

计算机视觉与模式识别 · 计算机科学 2020-01-17 Mohammad Hadi Kefayati , Vahid Pourahmadi , Hassan Aghaeinia

Wireless sensing technologies become increasingly prevalent due to the ubiquitous nature of wireless signals and their inherent privacy-friendly characteristics. Device-free personnel identity recognition, a prevalent application in…

信号处理 · 电气工程与系统科学 2024-05-07 Jichen Bian , Chong Tan , Peiyao Tang , Min Zheng

A reliable comfort model is essential to improve occupant satisfaction and reduce building energy consumption. As two types of the most common and intuitive thermal adaptive behaviors, precise recognition of dressing and undressing can…

人机交互 · 计算机科学 2024-10-30 Zhaohe Lv , Guoliang Zhao , Zhanbo Xu , Jiang Wu , Yadong Zhou , Kun Liu

Given the rapid advancements in wireless communication and terminal devices, high-speed and convenient WiFi has permeated various aspects of people's lives, and attention has been drawn to the location services that WiFi can provide.…

信号处理 · 电气工程与系统科学 2023-07-03 Jiyu Jiao , Xiaojun Wang , Chenlin He

It has been shown that the channel state information (CSI) of a Wi-Fi system can be exploited to localize Wi-Fi devices or track trajectory of a moving target. In the existing literature, both sensing tasks are treated separately and some…

信号处理 · 电气工程与系统科学 2026-03-19 Chunxi Chen , Jingwen Zhang , Chao Yu , Fan Liu , Rui Wang

Saliency prediction models are constrained by the limited diversity and quantity of labeled data. Standard data augmentation techniques such as rotating and cropping alter scene composition, affecting saliency. We propose a novel data…

计算机视觉与模式识别 · 计算机科学 2024-09-12 Bahar Aydemir , Deblina Bhattacharjee , Tong Zhang , Mathieu Salzmann , Sabine Süsstrunk