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Compressive imaging is an emerging application of compressed sensing, devoted to acquisition, encoding and reconstruction of images using random projections as measurements. In this paper we propose a novel method to provide a scalable…

信息论 · 计算机科学 2013-10-07 Diego Valsesia , Enrico Magli

The problem of recovering signals of high complexity from low quality sensing devices is analyzed via a combination of tools from signal processing and harmonic analysis. By using the rich structure offered by the recent development in…

信息论 · 计算机科学 2020-03-16 Roza Aceska , Jean-Luc Bouchot , Shidong Li

Sampling and quantization are standard practices in signal and image processing, but a theoretical understanding of their impact is incomplete. We consider discrete image registration when the underlying function is a one-dimensional…

计算机视觉与模式识别 · 计算机科学 2024-10-28 Serap A. Savari

We address the problem of blind gain and phase calibration of a sensor array from ambient noise. The key motivation is to ease the calibration process by avoiding a complex procedure setup. We show that computing the sample covariance…

仪器与探测器 · 物理学 2023-03-22 Charles Vanwynsberghe , Simon Bouley , Jérôme Antoni

This paper studies the subspace segmentation problem. Given a set of data points drawn from a union of subspaces, the goal is to partition them into their underlying subspaces they were drawn from. The spectral clustering method is used as…

计算机视觉与模式识别 · 计算机科学 2015-01-20 Canyi Lu , Jiashi Feng , Zhouchen Lin , Shuicheng Yan

The construction of highly incoherent frames, sequences of vectors placed on the unit hyper sphere of a finite dimensional Hilbert space with low correlation between them, has proven very difficult. Algorithms proposed in the past have…

信息论 · 计算机科学 2016-11-28 Cristian Rusu , Nuria González-Prelcic

Sparse arrays have emerged as a popular alternative to the conventional uniform linear array (ULA) due to the enhanced degrees of freedom (DOF) and superior resolution offered by them. In the passive setting, these advantages are realized…

信号处理 · 电气工程与系统科学 2023-01-05 Pulak Sarangi , Mehmet Can Hucumenoglu , Robin Rajamaki , Piya Pal

Coherent Ising Machine (CIM) is a network of optical parametric oscillators that can solve large-scale combinatorial optimisation problems by finding the ground state of an Ising Hamiltonian. As a practical application of CIM, Aonishi et…

Next-generation smart city applications, attributed by the power of Internet of Things (IoT) and Cyber-Physical Systems (CPS), significantly rely on the quality of sensing data. With an exponential increase in intelligent applications for…

网络与互联网体系结构 · 计算机科学 2022-08-03 Anirban Das , Navlika Singh , Suchetana Chakraborty

Compressive sensing (CS) is an alternative to Shannon/Nyquist sampling for the acquisition of sparse or compressible signals that can be well approximated by just K << N elements from an N-dimensional basis. Instead of taking periodic…

信息论 · 计算机科学 2016-11-17 Richard G. Baraniuk , Volkan Cevher , Marco F. Duarte , Chinmay Hegde

We consider the problem of reconstructing time sequences of spatially sparse signals (with unknown and time-varying sparsity patterns) from a limited number of linear "incoherent" measurements, in real-time. The signals are sparse in some…

信息论 · 计算机科学 2016-11-17 Namrata Vaswani

It is well-known that the statistical performance of Lasso can suffer significantly when the covariates of interest have strong correlations. In particular, the prediction error of Lasso becomes much worse than computationally inefficient…

机器学习 · 统计学 2024-02-26 Jonathan Kelner , Frederic Koehler , Raghu Meka , Dhruv Rohatgi

We propose a novel regularization method for compressive imaging in the context of the compressed sensing (CS) theory with coherent and redundant dictionaries. Natural images are often complicated and several types of structures can be…

天体物理仪器与方法 · 物理学 2014-02-12 Rafael E. Carrillo , Jason D. McEwen , Yves Wiaux

It is well-known that the posterior density of linear inverse problems with Gaussian prior and Gaussian likelihood is also Gaussian, hence completely described by its covariance and expectation. Sampling from a Gaussian posterior may be…

数值分析 · 数学 2025-02-11 Daniela Calvetti , Erkki Somersalo

Compressive sensing is the newly emerging method in information technology that could impact array beamforming and the associated engineering applications. However, practical measurements are inevitably polluted by noise from external…

信息论 · 计算机科学 2013-07-12 Siyang Zhong , Xun Huang

Compressed sensing (CS) demonstrates that sparse signals can be estimated from under-determined linear systems. Distributed CS (DCS) further reduces the number of measurements by considering joint sparsity within signal ensembles. DCS with…

信息论 · 计算机科学 2017-03-24 Junan Zhu , Dror Baron , Florent Krzakala

In independent component analysis it is assumed that the observed random variables are linear combinations of latent, mutually independent random variables called the independent components. Our model further assumes that only the…

统计理论 · 数学 2016-12-19 Joni Virta , Klaus Nordhausen , Hannu Oja

Pseudo-labeling is significant for semi-supervised instance segmentation, which generates instance masks and classes from unannotated images for subsequent training. However, in existing pipelines, pseudo-labels that contain valuable…

计算机视觉与模式识别 · 计算机科学 2023-08-11 Jie Hu , Chen Chen , Liujuan Cao , Shengchuan Zhang , Annan Shu , Guannan Jiang , Rongrong Ji

One technology that has the potential to improve wireless communications in years to come is integrated sensing and communication (ISAC). In this study, we take advantage of reconfigurable intelligent surface's (RIS) potential advantages to…

信号处理 · 电气工程与系统科学 2023-08-22 Panpan Li , Yong Niu , Hao Wu , Zhu Han , Guiqi Sun , Ning Wang , Zhangdui Zhong , Bo Ai

We address the problem of compressed sensing (CS) with prior information: reconstruct a target CS signal with the aid of a similar signal that is known beforehand, our prior information. We integrate the additional knowledge of the similar…

信息论 · 计算机科学 2014-08-25 Joao F. C. Mota , Nikos Deligiannis , Miguel R. D. Rodrigues
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