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We propose a novel deep network architecture for image\\ denoising based on a Gaussian Conditional Random Field (GCRF) model. In contrast to the existing discriminative denoising methods that train a separate model for each noise level, the…

计算机视觉与模式识别 · 计算机科学 2015-11-13 Raviteja Vemulapalli , Oncel Tuzel , Ming-Yu Liu

This paper proposes a belief propagation (BP) message passing algorithm based joint multiple symbol differential detection (MSDD) and channel decoding scheme for noncoherent differential ultra-wideband impulse radio (UWB-IR) systems. MSDD…

信息论 · 计算机科学 2015-05-27 Taotao Wang , Tiejun Lv , Hui Gao , Shengli Zhang

The effectiveness of machine learning models is significantly affected by the size of the dataset and the quality of features as redundant and irrelevant features can radically degrade the performance. This paper proposes IGRF-RFE: a hybrid…

机器学习 · 计算机科学 2023-02-07 Yuhua Yin , Julian Jang-Jaccard , Wen Xu , Amardeep Singh , Jinting Zhu , Fariza Sabrina , Jin Kwak

In this contribution, we consider the problem of the blind separation of noisy instantaneously mixed images. The images are modelized by hidden Markov fields with unknown parameters. Given the observed images, we give a Bayesian formulation…

数据分析、统计与概率 · 物理学 2007-05-23 Hichem Snoussi , Ali Mohammad-Djafari

Despite the remarkable progress of deep learning in stereo matching, there exists a gap in accuracy between real-time models and slower state-of-the-art models which are suitable for practical applications. This paper presents an iterative…

计算机视觉与模式识别 · 计算机科学 2021-10-26 Kumail Raza , René Schuster , Didier Stricker

Motivated by change point problems in time series and the detection of textured objects in images, we consider the problem of detecting a piece of a Gaussian Markov random field hidden in white Gaussian noise. We derive minimax lower bounds…

统计理论 · 数学 2015-10-15 Ery Arias-Castro , Sébastien Bubeck , Gábor Lugosi , Nicolas Verzelen

Media-based modulation (MBM) is a novel modulation technique that can improve the spectral efficiency of the existing wireless systems. In MBM, multiple radio frequency (RF) mirrors are placed near the transmit antenna(s) and are switched…

信息论 · 计算机科学 2021-01-07 Manish Mandloi , Devendra Singh Gurjar

To effectively retrieve objects from large corpus with high accuracy is a challenge task. In this paper, we propose a method that propagates visual feature level similarities on a Markov random field (MRF) to obtain a high level…

计算机视觉与模式识别 · 计算机科学 2013-12-30 Peng Lu , Xujun Peng , Xinshan Zhu , Xiaojie Wang

Although recent works based on deep learning have made progress in improving recognition accuracy on scene text recognition, how to handle low-quality text images in end-to-end deep networks remains a research challenge. In this paper, we…

计算机视觉与模式识别 · 计算机科学 2021-08-16 Zhiwei Jia , Shugong Xu , Shiyi Mu , Yue Tao , Shan Cao , Zhiyong Chen

We address the detection of material defects, which are inside a layered material structure using compressive sensing based multiple-input and multiple-output (MIMO) wireless radar. Here, the strong clutter due to the reflection of the…

信号处理 · 电气工程与系统科学 2022-04-18 Udaya S. K. P. Miriya Thanthrige , Peter Jung , Aydin Sezgin

We present two algorithms to identify and flag radio frequency interference (RFI) in radio interferometric imaging data. The first algorithm utilizes the redundancy of visibilities inside a UV cell in the visibility plane to identify…

天体物理仪器与方法 · 物理学 2018-06-27 Srikrishna Sekhar , Ramana Athreya

Recently, orthogonal time frequency space (OTFS) modulation has garnered considerable attention due to its robustness against doubly-selective wireless channels. In this paper, we propose a low-complexity iterative successive interference…

信息论 · 计算机科学 2024-01-23 Qi Li , Jinhong Yuan , Min Qiu , Shuangyang Li , Yixuan Xie

Markov Random Fields (MRFs), a formulation widely used in generative image modeling, have long been plagued by the lack of expressive power. This issue is primarily due to the fact that conventional MRFs formulations tend to use simplistic…

计算机视觉与模式识别 · 计算机科学 2016-09-08 Zhirong Wu , Dahua Lin , Xiaoou Tang

Statistical machine learning has widespread application in various domains. These methods include probabilistic algorithms, such as Markov Chain Monte-Carlo (MCMC), which rely on generating random numbers from probability distributions.…

硬件体系结构 · 计算机科学 2021-08-03 Ramin Bashizade , Xiangyu Zhang , Sayan Mukherjee , Alvin R. Lebeck

Presented in this paper is a Markov chain Monte Carlo (MCMC) routine for conducting coherent parameter estimation for interferometric gravitational wave observations of an inspiral of binary compact objects using data from multiple…

广义相对论与量子宇宙学 · 物理学 2008-11-26 Christian Röver , Renate Meyer , Nelson Christensen

The problem of detecting a sinusoidal signal with randomly varying frequency has a long history. It is one of the core problems in signal processing, arising in many applications including, for example, underwater acoustic frequency line…

信号处理 · 电气工程与系统科学 2022-11-14 Changrong Liu , S. Suvorova , R. J. Evans , B. Moran , A. Melatos

In this paper, we propose low-complexity local detectors and log-likelihood ratio (LLR) refinement techniques for a coded cell-free massive multiple input multiple output (CF- mMIMO) systems, where an iterative detection and decoding (IDD)…

信息论 · 计算机科学 2024-05-24 T. Ssettumba , Z. Shao , L. Landau , R. C. de Lamare

The effect of noise on the Inverse Synthetic Aperture Radar (ISAR) with sparse apertures is a challenging issue for image reconstruction with high resolution at low Signal-to-Noise Ratios (SNRs). It is well-known that the image resolution…

信号处理 · 电气工程与系统科学 2024-06-18 Mohammad Roueinfar , Mohammad Hossein Kahaei

In this paper, we study the problem of inferring spatially-varying Gaussian Markov random fields (SV-GMRF) where the goal is to learn a network of sparse, context-specific GMRFs representing network relationships between genes. An important…

应用统计 · 统计学 2022-06-22 Visweswaran Ravikumar , Tong Xu , Wajd N. Al-Holou , Salar Fattahi , Arvind Rao

This paper considers an integrated sensing and communication system, where some radar targets also serve as communication scatterers. A location domain channel modeling method is proposed based on the position of targets and scatterers in…

信号处理 · 电气工程与系统科学 2023-07-19 Wenkang Xu , Yongbo Xiao , An Liu , Ming Lei , Minjian Zhao