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Conventional Synthetic Aperture Radar (SAR) systems are limited in their ability to satisfy the increasing requirement for improved spatial resolution and wider coverage. The demand for high resolution requires high sampling rates, while…

信息论 · 计算机科学 2017-11-22 Kfir Aberman , Yonina C. Eldar

Low rank tensor representation (LRTR) methods are very useful for hyperspectral anomaly detection (HAD). To overcome the limitations that they often overlook spectral anomaly and rely on large-scale matrix singular value decomposition, we…

计算机视觉与模式识别 · 计算机科学 2025-03-10 Quan Yu , Yu-Hong Dai , Minru Bai

Mapping land surface disturbances supports disaster response, resource and ecosystem management, and climate adaptation efforts. Synthetic aperture radar (SAR) is an invaluable tool for disturbance mapping, providing consistent time-series…

计算机视觉与模式识别 · 计算机科学 2025-03-19 Harris Hardiman-Mostow , Charles Marshak , Alexander L. Handwerger

The multi-plane phase retrieval method provides a budget-friendly and effective way to perform phase imaging, yet it often encounters alignment challenges due to shifts along the optical axis in experiments. Traditional methods, such as…

光学 · 物理学 2024-05-01 Jiabao Wang , Yang Wu , Jun Wang , Ni Chen

The scattering of light observed through the turbid underwater channel is often regarded as the leading challenge when designing underwater electro-optical imaging systems. There have been many approaches to address the effects of…

光学 · 物理学 2018-04-17 Chensheng Wu , Robert Lee , Christopher C. Davis

We consider the problem of outlier robust PCA (OR-PCA) where the goal is to recover principal directions despite the presence of outlier data points. That is, given a data matrix $M^*$, where $(1-\alpha)$ fraction of the points are noisy…

机器学习 · 计算机科学 2017-02-21 Yeshwanth Cherapanamjeri , Prateek Jain , Praneeth Netrapalli

Principal component analysis (PCA) is widely used for dimensionality reduction, with well-documented merits in various applications involving high-dimensional data, including computer vision, preference measurement, and bioinformatics. In…

机器学习 · 统计学 2013-10-01 Gonzalo Mateos , Georgios B. Giannakis

The integration of sensing and communication (ISAC) has significant potential for future wireless systems, enabling efficient spectrum utilization and novel application scenarios. In this paper, we propose a cooperative ISAC framework for…

信号处理 · 电气工程与系统科学 2025-11-06 Qiuyuan Yang , Cunhua Pan , Ruidong Li , Zhenkun Zhang , Hong Ren , Changhong Wang , Jiangzhou Wang

This paper focuses on the non-coherent detection in ambient backscatter communication, which is highly appealing for systems where the trade-off between signaling overhead and the actual data transmission is very critical. Modeling the…

信息论 · 计算机科学 2021-04-28 J. Kartheek Devineni , Harpreet S. Dhillon

Correlated ${\cal G}$ distributions can be used to describe the clutter seen in images obtained with coherent illumination, as is the case of B-scan ultrasound, laser, sonar and synthetic aperture radar (SAR) imagery. These distributions…

统计方法学 · 统计学 2012-07-10 O. H. Bustos , A. G. Flesia , A. C. Frery , M. M. Lucini

In this paper we tackle the problem of recovering the phase of complex linear measurements when only magnitude information is available and we control the input. We are motivated by the recent development of dedicated optics-based hardware…

机器学习 · 计算机科学 2020-02-17 Sidharth Gupta , Rémi Gribonval , Laurent Daudet , Ivan Dokmanić

In many real-world applications data exhibits non-stationarity, i.e., its distribution changes over time. One approach to handling non-stationarity is to remove or minimize it before attempting to analyze the data. In the context of brain…

机器学习 · 计算机科学 2016-05-26 Inbal Horev , Florian Yger , Masashi Sugiyama

We have developed a nonlocal algorithm for estimating polarimetric synthetic aperture radar (PolSAR) covariance matrices on single-look complex (SLC) format resolution. The algorithm is inspired by recent work with guided nonlocal means…

图像与视频处理 · 电气工程与系统科学 2022-02-16 Jørgen A. Agersborg , Stian Normann Anfinsen , Jane Uhd Jepsen

An approach is introduced for the non-parametric reconstruction of the statistical properties of penetrable, isotropic randomly rough surfaces from in-plane, co-polarized light scattering data. Starting from expressions within the Kirchhoff…

光学 · 物理学 2021-10-13 Verónica P. Simonsen , Dick Bedeaux , Ingve Simonsen

We make use of a large set of fast simulations of an intensity mapping experiment with characteristics similar to those expected of the Square Kilometre Array (SKA) in order to study the viability and limits of blind foreground subtraction…

宇宙学与河外天体物理 · 物理学 2015-06-23 David Alonso , Philip Bull , Pedro G. Ferreira , Mario G. Santos

There is rising interest in differentiable rendering, which allows explicitly modeling geometric priors and constraints in optimization pipelines using first-order methods such as backpropagation. Incorporating such domain knowledge can…

图像与视频处理 · 电气工程与系统科学 2023-08-09 Michael Wilmanski , Jonathan Tamir

Synthetic aperture radar tomography (TomoSAR) baseline optimization technique is capable of reducing system complexity and improving the temporal coherence of data, which has become an important research in the field of TomoSAR. In this…

信号处理 · 电气工程与系统科学 2022-12-02 Pengyu Jiang , Zhe Zhang , Bingchen Zhang , Zhongqiu Xu

The log-ratio (LR) operator has been widely employed to generate the difference image for synthetic aperture radar (SAR) image change detection. However, the difference image generated by this pixel-wise operator can be subject to SAR…

计算机视觉与模式识别 · 计算机科学 2020-02-19 Rongfang Wang , Jia-Wei Chen , Yule Wang , Licheng Jiao , Mi Wang

Sparse Principal Component Analysis (sparse PCA) is a fundamental dimension-reduction tool that enhances interpretability in various high-dimensional settings. An important variant of sparse PCA studies the scenario when samples are…

最优化与控制 · 数学 2024-11-11 Yuqing He , Guanyi Wang , Yu Yang

We propose a new approach to linear ill-posed inverse problems. Our algorithm alternates between enforcing two constraints: the measurements and the statistical correlation structure in some transformed space. We use a non-linear multiscale…

计算工程、金融与科学 · 计算机科学 2018-12-04 Ivan Dokmanić , Joan Bruna , Stéphane Mallat , Maarten de Hoop
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