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Deep Convolutional Neural Networks (CNNs) i.e. Residual Networks (ResNets) have been used successfully for many computer vision tasks, but are difficult to scale to 3D volumetric medical data. Memory is increasingly often the bottleneck…

Image and Video Processing · Electrical Eng. & Systems 2021-03-17 Kashu Yamazaki , Vidhiwar Singh Rathour , T. Hoang Ngan Le

In image denoising, deep convolutional neural networks (CNNs) can obtain favorable performance on removing spatially invariant noise. However, many of these networks cannot perform well on removing the real noise (i.e. spatially variant…

Image and Video Processing · Electrical Eng. & Systems 2023-05-09 Wencong Wu , Shijie Liu , Yi Zhou , Yungang Zhang , Yu Xiang

This paper presents an online method for joint channel estimation and decoding in massive MIMO-OFDM systems using complex-valued neural networks (CVNNs). The study evaluates the performance of various CVNNs, such as the complex-valued…

Deep Convolutional Neural Networks (CNNs) are more powerful than Deep Neural Networks (DNN), as they are able to better reduce spectral variation in the input signal. This has also been confirmed experimentally, with CNNs showing…

In this paper, channel estimation of an active intelligent reflecting surface (IRS) aided uplink Internet of Things (IoT) network is investigated. Firstly, the least square (LS) estimators for the direct channel and the cascaded channel are…

Signal Processing · Electrical Eng. & Systems 2024-07-16 Yan Wang , Feng Shu , Rongen Dong , Wei Gao , Qi Zhang , Jiajia Liu

In this paper, we consider channel estimation for intelligent reflecting surface (IRS)-assisted millimeter wave (mmWave) systems, where an IRS is deployed to assist the data transmission from the base station (BS) to a user. It is shown…

Signal Processing · Electrical Eng. & Systems 2020-07-15 Peilan Wang , Jun Fang , Huiping Duan , Hongbin Li

Near-field channel estimation is a fundamental challenge in the sixth-generation (6G) wireless communication, where extremely large antenna arrays (ELAA) enable near-field communication (NFC) but introduce significant signal processing…

Signal Processing · Electrical Eng. & Systems 2025-05-21 Vu Tung Lam , Do Hai Son , Tran Thi Thuy Quynh , Le Trung Thanh

The estimation of crowd count in images has a wide range of applications such as video surveillance, traffic monitoring, public safety and urban planning. Recently, the convolutional neural network (CNN) based approaches have been shown to…

Computer Vision and Pattern Recognition · Computer Science 2018-05-16 Xinghao Ding , Zhirui Lin , Fujin He , Yu Wang , Yue Huang

Effectively detecting anomalous nodes in attributed networks is crucial for the success of many real-world applications such as fraud and intrusion detection. Existing approaches have difficulties with three major issues: sparsity and…

Machine Learning · Computer Science 2020-10-01 Yulong Pei , Tianjin Huang , Werner van Ipenburg , Mykola Pechenizkiy

Existing video super-resolution (SR) algorithms usually assume that the blur kernels in the degradation process are known and do not model the blur kernels in the restoration. However, this assumption does not hold for video SR and usually…

Computer Vision and Pattern Recognition · Computer Science 2020-03-11 Jinshan Pan , Songsheng Cheng , Jiawei Zhang , Jinhui Tang

While machine learning techniques are traditionally resource intensive, we are currently witnessing an increased interest in hardware and energy efficient approaches. This need for resource-efficient machine learning is primarily driven by…

Audio and Speech Processing · Electrical Eng. & Systems 2020-07-23 Lukas Pfeifenberger , Matthias Zöhrer , Günther Schindler , Wolfgang Roth , Holger Fröning , Franz Pernkopf

Inspired by the remarkable learning and prediction performance of deep neural networks (DNNs), we apply one special type of DNN framework, known as model-driven deep unfolding neural network, to reconfigurable intelligent surface…

Signal Processing · Electrical Eng. & Systems 2021-12-06 Jiguang He , Henk Wymeersch , Marco Di Renzo , Markku Juntti

Channel pruning, which seeks to reduce the model size by removing redundant channels, is a popular solution for deep networks compression. Existing channel pruning methods usually conduct layer-wise channel selection by directly minimizing…

Computer Vision and Pattern Recognition · Computer Science 2019-05-14 Yiming Hu , Siyang Sun , Jianquan Li , Jiagang Zhu , Xingang Wang , Qingyi Gu

Deep learning based methods hold state-of-the-art results in low-level image processing tasks, but remain difficult to interpret due to their black-box construction. Unrolled optimization networks present an interpretable alternative to…

Image and Video Processing · Electrical Eng. & Systems 2025-11-18 Nikola Janjušević , Amirhossein Khalilian-Gourtani , Yao Wang

Very deep convolutional neural networks (CNNs) yield state of the art results on a wide variety of visual recognition problems. A number of state of the the art methods for image recognition are based on networks with well over 100 layers…

Computer Vision and Pattern Recognition · Computer Science 2016-07-15 Joel Moniz , Christopher Pal

Channel estimation is very challenging when the receiver is equipped with a limited number of radio-frequency (RF) chains in beamspace millimeter-wave (mmWave) massive multiple-input and multiple-output systems. To solve this problem, we…

Information Theory · Computer Science 2019-01-15 Hengtao He , Chao-Kai Wen , Shi Jin , Geoffrey Ye Li

Interferometric Synthetic Aperture Radar (InSAR) imagery for estimating ground movement, based on microwaves reflected off ground targets is gaining increasing importance in remote sensing. However, noise corrupts microwave reflections…

Image and Video Processing · Electrical Eng. & Systems 2020-01-22 Subhayan Mukherjee , Aaron Zimmer , Navaneeth Kamballur Kottayil , Xinyao Sun , Parwant Ghuman , Irene Cheng

This paper proposes a learning-based denoising method called FlashLight CNN (FLCNN) that implements a deep neural network for image denoising. The proposed approach is based on deep residual networks and inception networks and it is able to…

Image and Video Processing · Electrical Eng. & Systems 2020-07-06 Pham Huu Thanh Binh , Cristóvão Cruz , Karen Egiazarian

Disparity estimation is a difficult problem in stereo vision because the correspondence technique fails in images with textureless and repetitive regions. Recent body of work using deep convolutional neural networks (CNN) overcomes this…

Computer Vision and Pattern Recognition · Computer Science 2018-05-22 Rowel Atienza

The era of ubiquitous, affordable wireless connectivity has opened doors to countless practical applications. In this context, ambient backscatter communication (AmBC) stands out, utilizing passive tags to establish connections with readers…

Information Theory · Computer Science 2023-11-16 S. Zargari , A. Hakimi , C. Tellambura , A. Maaref
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