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Reconstructing fields from sparsely observed data is an ill-posed problem that arises in many engineering and science applications. Here, we investigate the use of physics-informed neural networks (PINNs) to reconstruct complete…

流体动力学 · 物理学 2024-10-11 Nagahiro Ohashi , Leslie K. Hwang , Beomjin Kwon

This paper presents an approach for instantaneous bandwidth estimation from level-crossing (LC) samples using a long short-term memory (LSTM) encoder-decoder architecture. LC sampling is a nonuniform sampling technique that is particularly…

信号处理 · 电气工程与系统科学 2025-04-29 Johannes Königs , Carsten Bockelmann , Armin Dekorsy

Time-frequency analysis for non-linear and non-stationary signals is extraordinarily challenging. To capture features in these signals, it is necessary for the analysis methods to be local, adaptive and stable. In recent years,…

数值分析 · 数学 2015-10-26 Antonio Cicone , Jingfang Liu , Haomin Zhou

Laser feedback interferometry (LFI) has a wide range of applications such as displacement, distance and velocity measurements. LFI has been realized in many types of lasers but has never been reported in non-planar ring oscillators (NPRO)…

In this paper, we investigate a large intelligent surface-enhanced (LIS-enhanced) system, where a LIS is deployed to assist secure transmission. Our design aims to maximize the achievable secrecy rates in different channel models, i.e.,…

信息论 · 计算机科学 2020-10-28 Biqian Feng , Yongpeng Wu , Mengfan Zheng , Xiang-Gen Xia , Yongjian Wang , Chengshan Xiao

We study the transmission over a cloud radio access network in which multiple base stations (BS) are connected to a central processor (CP) via finite-capacity backhaul links. We propose two lattice-based coding schemes. In the first scheme,…

信息论 · 计算机科学 2016-03-01 Iñaki Estella Aguerri , Abdellatif Zaidi

Brain encoding and decoding aims to understand the relationship between external stimuli and brain activities, and is a fundamental problem in neuroscience. In this article, we study latent embedding alignment for brain encoding and…

统计方法学 · 统计学 2026-03-24 Shuoxun Xu , Zhanhao Yan , Lexin Li

Measurement of the velocity field in thermal-hydraulic experiments is of great importance for phenomena interpretation and code validation. Direct measurement employing Particle Image Velocimetry (PIV) is challenging in some multiphase…

流体动力学 · 物理学 2025-09-03 Xicheng Wang , YiMeng Chan , KinWing Wong , Dmitry Grishchenko , Pavel Kudinov

In this paper, we propose a new non-convex algorithm for solving the phase retrieval problem, i.e., the reconstruction of a signal $ \vx\in\H^n $ ($\H=\R$ or $\C$) from phaseless samples $ b_j=\abs{\langle \va_j, \vx\rangle } $, $…

数值分析 · 数学 2020-10-15 Bing Gao , Xinwei Sun , Yang Wang , Zhiqiang Xu

Imaging through a single optical fiber offers attractive possibilities in many applications such as microendoscopy or remote sensing. However, the direct transmission of an image through an optical fiber is difficult because spatial…

光学 · 物理学 2015-05-29 Roman Barankov , Jerome Mertz

Reconfigurable Intelligent Surfaces (RISs) have been recently considered as an energy-efficient solution for future wireless networks. Their dynamic and low-power configuration enables coverage extension, massive connectivity, and…

信息论 · 计算机科学 2020-11-30 Li Wei , Chongwen Huang , George C. Alexandropoulos , Zhaohui Yang , Chau Yuen , Zhaoyang Zhang

We propose a scheme which encodes information in both the longitudinal and spatial transverse phases of a continuous-wave optical beam. A split detector-based interferometric scheme is then introduced to optimally detect both encoded phase…

Spatial frequency analysis and transforms serve a central role in most engineered image and video lossy codecs, but are rarely employed in neural network (NN)-based approaches. We propose a novel NN-based image coding framework that…

图像与视频处理 · 电气工程与系统科学 2023-01-04 Hyomin Choi , Fabien Racape , Shahab Hamidi-Rad , Mateen Ulhaq , Simon Feltman

Spiking neural networks (SNNs) are promising brain-inspired energy-efficient models. Compared to conventional deep Artificial Neural Networks (ANNs), SNNs exhibit superior efficiency and capability to process temporal information. However,…

神经与进化计算 · 计算机科学 2025-02-20 Yulong Huang , Xiaopeng Lin , Hongwei Ren , Haotian Fu , Yue Zhou , Zunchang Liu , Biao Pan , Bojun Cheng

Phased arrays, commonly used in IEEE 802.11ad and 5G radios, are capable of focusing radio frequency signals in a specific direction or a spatial region. Beamforming achieves such directional or spatial concentration of signals and enables…

信号处理 · 电气工程与系统科学 2024-10-30 Nitin Jonathan Myers , Robert W. Heath

The observations in many applications consist of counts of discrete events, such as photons hitting a dector, which cannot be effectively modeled using an additive bounded or Gaussian noise model, and instead require a Poisson noise model.…

最优化与控制 · 数学 2016-11-17 Zachary T. Harmany , Roummel F. Marcia , Rebecca M. Willett

Blind Image Restoration (BIR) methods have achieved remarkable success but falter when faced with Extreme Blind Image Restoration (EBIR), where inputs suffer from severe, compounded degradations beyond their training scope. Directly…

计算机视觉与模式识别 · 计算机科学 2025-10-02 Hongeun Kim , Bryan Sangwoo Kim , Jong Chul Ye

Although deep learning based image compression methods have achieved promising progress these days, the performance of these methods still cannot match the latest compression standard Versatile Video Coding (VVC). Most of the recent…

图像与视频处理 · 电气工程与系统科学 2021-08-29 Yueqi Xie , Ka Leong Cheng , Qifeng Chen

Implicit neural representations (INRs) have emerged as a powerful tool for solving inverse problems in computer vision and computational imaging. INRs represent images as continuous domain functions realized by a neural network taking…

图像与视频处理 · 电气工程与系统科学 2025-06-12 Mahrokh Najaf , Gregory Ongie

As an increasing amount of image and video content will be analyzed by machines, there is demand for a new codec paradigm that is capable of compressing visual input primarily for the purpose of computer vision inference, while secondarily…

图像与视频处理 · 电气工程与系统科学 2023-01-12 Ezgi Ozyilkan , Mateen Ulhaq , Hyomin Choi , Fabien Racape