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State-of-the-art segmentation methods rely on very deep networks that are not always easy to train without very large training datasets and tend to be relatively slow to run on standard GPUs. In this paper, we introduce a novel recurrent…

Computer Vision and Pattern Recognition · Computer Science 2019-06-13 Wei Wang , Kaicheng Yu , Joachim Hugonot , Pascal Fua , Mathieu Salzmann

U-Nets are a go-to, state-of-the-art neural architecture across numerous tasks for continuous signals on a square such as images and Partial Differential Equations (PDE), however their design and architecture is understudied. In this paper,…

Echo path delay (or ref-delay) estimation is a big challenge in acoustic echo cancellation. Different devices may introduce various ref-delay in practice. Ref-delay inconsistency slows down the convergence of adaptive filters, and also…

Audio and Speech Processing · Electrical Eng. & Systems 2022-08-12 Yi Zhang , Chengyun Deng , Shiqian Ma , Yongtao Sha , Hui Song

Up to now, most existing steganalytic methods are designed for grayscale images, and they are not suitable for color images that are widely used in current social networks. In this paper, we design a universal color image steganalysis…

Computer Vision and Pattern Recognition · Computer Science 2021-11-25 Kangkang Wei , Weiqi Luo , Shunquan Tan , Jiwu Huang

Heterogeneous network (HetNet) has been proposed as a promising solution for handling the wireless traffic explosion in future fifth-generation (5G) system. In this paper, a joint subchannel and power allocation problem is formulated for…

Signal Processing · Electrical Eng. & Systems 2019-03-04 Di Xu , Xiaojing Che , Changhao Wu , Shunqing Zhang , Shugong Xu , Shan Cao

The deployment of Convolutional Neural Networks (CNNs) on resource constrained platforms such as mobile devices and embedded systems has been greatly hindered by their high implementation cost, and thus motivated a lot research interest in…

Computer Vision and Pattern Recognition · Computer Science 2019-08-12 Boyu Zhang , Azadeh Davoodi , Yu Hen Hu

We introduce a neural-network architecture, termed the constrained recurrent sparse autoencoder (CRsAE), that solves convolutional dictionary learning problems, thus establishing a link between dictionary learning and neural networks.…

Machine Learning · Computer Science 2020-10-20 Bahareh Tolooshams , Sourav Dey , Demba Ba

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…

In recent years, the accuracy of gaze estimation techniques has gradually improved, but existing methods often rely on large datasets or large models to improve performance, which leads to high demands on computational resources. In terms…

Computer Vision and Pattern Recognition · Computer Science 2024-12-12 Zhang Cheng , Yanxia Wang , Guoyu Xia

Various architectures (such as GoogLeNets, ResNets, and DenseNets) have been proposed. However, the existing networks usually suffer from either redundancy of convolutional layers or insufficient utilization of parameters. To handle these…

Computer Vision and Pattern Recognition · Computer Science 2020-04-27 Zhiyu Zhu , Zhen-Peng Bian , Junhui Hou , Yi Wang , Lap-Pui Chau

In a wide range of semantic segmentation tasks, fully convolutional neural networks (F-CNNs) have been successfully leveraged to achieve state-of-the-art performance. Architectural innovations of F-CNNs have mainly been on improving spatial…

Computer Vision and Pattern Recognition · Computer Science 2018-08-27 Abhijit Guha Roy , Nassir Navab , Christian Wachinger

Deep learning, especially convolutional neural networks, has triggered accelerated advancements in computer vision, bringing changes into our daily practice. Furthermore, the standardized deep learning modules (also known as backbone…

Computer Vision and Pattern Recognition · Computer Science 2022-12-02 Hongzhi Zhu , Robert Rohling , Septimiu Salcudean

Convolutional Neural Networks are widely used to process spatial scenes, but their computational cost is fixed and depends on the structure of the network used. There are methods to reduce the cost by compressing networks or varying its…

Computer Vision and Pattern Recognition · Computer Science 2019-04-15 Sang-ho Lee , Simyung Chang , Nojun Kwak

The channel estimation (CE) overhead for unstructured multipath-rich channels increases linearly with the number of reflective elements of reconfigurable intelligent surface (RIS). This results in a significant portion of the channel…

Networking and Internet Architecture · Computer Science 2024-09-02 Souvik Deb , Sasthi C. Ghosh

The upper mid-band (UMB) spectrum is a key enabler for 6G systems, yet reconfigurable intelligent surface (RIS)-assisted UMB communications face severe channel estimation challenges due to near-field propagation and transitional scattering,…

Signal Processing · Electrical Eng. & Systems 2026-03-09 Jeongjae Lee , Chanwon Kim , Songnam Hong

Convolutional neural networks (CNNs) have shown great capability of solving various artificial intelligence tasks. However, the increasing model size has raised challenges in employing them in resource-limited applications. In this work, we…

Computer Vision and Pattern Recognition · Computer Science 2018-09-06 Hongyang Gao , Zhengyang Wang , Shuiwang Ji

Most existing Convolutional Neural Networks(CNNs) used for action recognition are either difficult to optimize or underuse crucial temporal information. Inspired by the fact that the recurrent model consistently makes breakthroughs in the…

Computer Vision and Pattern Recognition · Computer Science 2018-01-04 Zhenxing Zheng , Gaoyun An , Qiuqi Ruan

Studying the cosmological sources at their cosmological rest-frames is crucial to track the cosmic history and properties of compact objects. In view of the increasing data volume of existing and upcoming telescopes/detectors, we here…

High Energy Astrophysical Phenomena · Physics 2022-01-11 F. Rastegar Nia , M. T. Mirtorabi , R. Moradi , A. Vafaei. Sadr , Y. Wang

The realization of practical intelligent reflecting surface (IRS)-assisted multi-user communication (IRS-MUC) systems critically depends on the proper beamforming design exploiting accurate channel state information (CSI). However, channel…

Information Theory · Computer Science 2021-04-27 Chang Liu , Xuemeng Liu , Zhiqiang Wei , Shaokang Hu , Derrick Wing Kwan Ng , Jinhong Yuan

We present new Recurrent Neural Network (RNN) cells for image classification using a Neural Architecture Search (NAS) approach called DARTS. We are interested in the ReNet architecture, which is a RNN based approach presented as an…

Computer Vision and Pattern Recognition · Computer Science 2023-04-13 Brian Moser , Federico Raue , Jörn Hees , Andreas Dengel