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We develop a new sampling method to estimate eigenvector centrality on incomplete networks. Our goal is to estimate this global centrality measure having at disposal a limited amount of data. This is the case in many real-world scenarios…

Social and Information Networks · Computer Science 2020-10-29 Nicolò Ruggeri , Caterina De Bacco

Channel knowledge map (CKM) is a novel technique for achieving environment awareness, and thereby improving the communication and sensing performance for wireless systems. A fundamental problem associated with CKM is how to construct a…

Signal Processing · Electrical Eng. & Systems 2024-11-15 Shiyu Wang , Xiaoli Xu , Yong Zeng

In recent years, the integration of deep learning techniques with remote sensing technology has revolutionized the way natural hazards, such as floods, are monitored and managed. However, existing methods for flood segmentation using remote…

Computer Vision and Pattern Recognition · Computer Science 2025-01-22 Vicky Feliren , Fithrothul Khikmah , Irfan Dwiki Bhaswara , Bahrul I. Nasution , Alex M. Lechner , Muhamad Risqi U. Saputra

The binary segmentation of roads in very high resolution (VHR) remote sensing images (RSIs) has always been a challenging task due to factors such as occlusions (caused by shadows, trees, buildings, etc.) and the intra-class variances of…

Computer Vision and Pattern Recognition · Computer Science 2021-06-30 Lei Ding , Lorenzo Bruzzone

Recent advancements in vision models have greatly improved their ability to handle complex chart understanding tasks, like chart captioning and question answering. However, it remains challenging to assess how these models process charts.…

Computer Vision and Pattern Recognition · Computer Science 2024-07-31 Soohyun Lee , Minsuk Chang , Seokhyeon Park , Jinwook Seo

Low-bandwidth communication, such as underwater acoustic communication, is limited by best-case data rates of 30--50 kbit/s. This renders such channels unusable or inefficient at best for single image, video, or other bandwidth-demanding…

Image and Video Processing · Electrical Eng. & Systems 2020-09-23 Jesper Haahr Christensen , Lars Valdemar Mogensen , Ole Ravn

Channel charting has emerged as a powerful tool for user equipment localization and wireless environment sensing. Its efficacy lies in mapping high-dimensional channel data into low-dimensional features that preserve the relative…

Signal Processing · Electrical Eng. & Systems 2025-09-17 Ge Chen , Panqi Chen , Lei Cheng

We propose a joint channel estimation and data detection algorithm for massive multilple-input multiple-output systems based on diffusion models. Our proposed method solves the blind inverse problem by sampling from the joint posterior…

Signal Processing · Electrical Eng. & Systems 2023-11-20 Nicolas Zilberstein , Ananthram Swami , Santiago Segarra

Applying convolutional neural networks to large images is computationally expensive because the amount of computation scales linearly with the number of image pixels. We present a novel recurrent neural network model that is capable of…

Machine Learning · Computer Science 2014-06-25 Volodymyr Mnih , Nicolas Heess , Alex Graves , Koray Kavukcuoglu

In recent years, convolutional neural networks (CNNs) have achieved remarkable advancement in the field of remote sensing image super-resolution due to the complexity and variability of textures and structures in remote sensing images…

Image and Video Processing · Electrical Eng. & Systems 2024-05-09 Naveed Sultan , Amir Hajian , Supavadee Aramvith

In this paper, we propose a method to obtain a compact and accurate 3D wireframe representation from a single image by effectively exploiting global structural regularities. Our method trains a convolutional neural network to simultaneously…

Computer Vision and Pattern Recognition · Computer Science 2021-04-19 Yichao Zhou , Haozhi Qi , Yuexiang Zhai , Qi Sun , Zhili Chen , Li-Yi Wei , Yi Ma

Removing rain streaks from a single image has been drawing considerable attention as rain streaks can severely degrade the image quality and affect the performance of existing outdoor vision tasks. While recent CNN-based derainers have…

Computer Vision and Pattern Recognition · Computer Science 2019-08-20 Tianyu Wang , Xin Yang , Ke Xu , Shaozhe Chen , Qiang Zhang , Rynson Lau

Road extraction in remote sensing images is of great importance for a wide range of applications. Because of the complex background, and high density, most of the existing methods fail to accurately extract a road network that appears…

Computer Vision and Pattern Recognition · Computer Science 2021-06-09 Pourya Shamsolmoali , Masoumeh Zareapoor , Huiyu Zhou , Ruili Wang , Jie Yang

In this paper, we introduce a novel deep neural network suitable for multi-scale analysis and propose efficient model-agnostic methods that help the network extract information from high-frequency domains to reconstruct clearer images. Our…

Computer Vision and Pattern Recognition · Computer Science 2021-05-26 Hyungmin Roh , Myungjoo Kang

We present a novel underwater image enhancement method termed SCNet to improve the image quality meanwhile cope with the degradation diversity caused by the water. SCNet is based on normalization schemes across both spatial and channel…

Computer Vision and Pattern Recognition · Computer Science 2022-03-15 Zhenqi Fu , Xiaopeng Lin , Wu Wang , Yue Huang , Xinghao Ding

In this paper, we propose a novel meta learning approach for automatic channel pruning of very deep neural networks. We first train a PruningNet, a kind of meta network, which is able to generate weight parameters for any pruned structure…

Computer Vision and Pattern Recognition · Computer Science 2019-08-15 Zechun Liu , Haoyuan Mu , Xiangyu Zhang , Zichao Guo , Xin Yang , Tim Kwang-Ting Cheng , Jian Sun

Line Chart Data Extraction is a natural extension of Optical Character Recognition where the objective is to recover the underlying numerical information a chart image represents. Some recent works such as ChartOCR approach this problem…

Computer Vision and Pattern Recognition · Computer Science 2022-11-29 Shufan Li , Congxi Lu , Linkai Li , Haoshuai Zhou

Convolutional neural networks (CNN) have made significant advances in detecting roads from satellite images. However, existing CNN approaches are generally repurposed semantic segmentation architectures and suffer from the poor delineation…

Computer Vision and Pattern Recognition · Computer Science 2024-07-09 Tinghuai Wang , Guangming Wang , Kuan Eeik Tan

Channel charting is a self-supervised learning technique whose objective is to reconstruct a map of the radio environment, called channel chart, by taking advantage of similarity relationships in high-dimensional channel state information.…

Information Theory · Computer Science 2023-09-08 Phillip Stephan , Florian Euchner , Stephan ten Brink

We present a provable, sampling-based approach for generating compact Convolutional Neural Networks (CNNs) by identifying and removing redundant filters from an over-parameterized network. Our algorithm uses a small batch of input data…

Machine Learning · Computer Science 2020-03-24 Lucas Liebenwein , Cenk Baykal , Harry Lang , Dan Feldman , Daniela Rus