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Deep learning based methods hold state-of-the-art results in image denoising, but remain difficult to interpret due to their construction from poorly understood building blocks such as batch-normalization, residual learning, and feature…

图像与视频处理 · 电气工程与系统科学 2021-03-09 Nikola Janjušević , Amirhossein Khalilian-Gourtani , Yao Wang

A model, called the linear transform network (LTN), is proposed to analyze the compression and estimation of correlated signals transmitted over directed acyclic graphs (DAGs). An LTN is a DAG network with multiple source and receiver…

信息论 · 计算机科学 2015-04-15 Naveen Goela , Michael Gastpar

In inverse problems we aim to reconstruct some underlying signal of interest from potentially corrupted and often ill-posed measurements. Classical optimization-based techniques proceed by optimizing a data consistency metric together with…

图像与视频处理 · 电气工程与系统科学 2022-10-17 Peimeng Guan , Jihui Jin , Justin Romberg , Mark A. Davenport

The unrolling method has been investigated for learning variational models in X-ray computed tomography. However, it has been observed that directly unrolling the regularization model through gradient descent does not produce satisfactory…

图像与视频处理 · 电气工程与系统科学 2024-04-19 Yijie Yang , Qifeng Gao , Yuping Duan

Signal dimension, defined here as the number of copies with different delays or angular shifts, is a prerequisite for many high-resolution delay estimation and direction-finding algorithms in sensing and communication systems. Thus,…

信号处理 · 电气工程与系统科学 2025-08-15 Yugang Ma , Yonghong Zeng , Sumei Sun , Gary Lee , Ernest Kurniawan , Francois Chin Po Shin

Emotion recognition from facial expressions is tremendously useful, especially when coupled with smart devices and wireless multimedia applications. However, the inadequate network bandwidth often limits the spatial resolution of the…

计算机视觉与模式识别 · 计算机科学 2017-09-12 Bowen Cheng , Zhangyang Wang , Zhaobin Zhang , Zhu Li , Ding Liu , Jianchao Yang , Shuai Huang , Thomas S. Huang

Mapping a single exposure low dynamic range (LDR) image into a high dynamic range (HDR) is considered among the most strenuous image to image translation tasks due to exposure-related missing information. This study tackles the challenges…

计算机视觉与模式识别 · 计算机科学 2021-04-20 SMA Sharif , Rizwan Ali Naqvi , Mithun Biswas , Kim Sungjun

In this paper, we consider the recovery of the high-dimensional block-sparse signal from a compressed set of measurements, where the non-zero coefficients of the recovered signal occur in a small number of blocks. Adopting the idea of deep…

信号处理 · 电气工程与系统科学 2021-11-19 Rong Fu , Vincent Monardo , Tianyao Huang , Yimin Liu

The problem of sparse multichannel blind deconvolution (S-MBD) arises frequently in many engineering applications such as radar/sonar/ultrasound imaging. To reduce its computational and implementation cost, we propose a compression method…

信号处理 · 电气工程与系统科学 2023-07-05 Bahareh Tolooshams , Satish Mulleti , Demba Ba , Yonina C. Eldar

Based on a new equivalent model of quantizer with noisy input recently presented in [23], we propose a new low complexity receiver that takes into account the nonlinear distortion (NLD) generated by Analog to Digital converter (ADC) with…

信号处理 · 电气工程与系统科学 2019-04-23 Arkady Molev-Shteiman , Xiao-Feng Qi , Laurence Mailaender

Proper segmentation of organs-at-risk is important for radiation therapy, surgical planning, and diagnostic decision-making in medical image analysis. While deep learning-based segmentation architectures have made significant progress, they…

计算机视觉与模式识别 · 计算机科学 2025-09-23 Riad Hassan , M. Rubaiyat Hossain Mondal , Sheikh Iqbal Ahamed , Fahad Mostafa , Md Mostafijur Rahman

Unrolled deep neural networks have attracted significant attention for their success in various practical applications. In this paper, we explore an application of deep unrolling in the direction of arrival (DoA) estimation problem when…

信号处理 · 电气工程与系统科学 2024-05-17 Farhang Yeganegi , Arian Eamaz , Tara Esmaeilbeig , Mojtaba Soltanalian

Recently, model-driven deep learning unrolls a certain iterative algorithm of a regularization model into a cascade network by replacing the first-order information (i.e., (sub)gradient or proximal operator) of the regularizer with a…

For a massive multiple-input-multiple-output (MIMO) system using intelligent reflecting surface (IRS) equipped with radio frequency (RF) chains, the multi-channel RF chains are expensive compared to passive IRS, especially, when the…

信号处理 · 电气工程与系统科学 2020-05-05 Weifeng Han , Peng Chen , Zhenxin Cao

Recognizing an activity with a single reference sample using metric learning approaches is a promising research field. The majority of few-shot methods focus on object recognition or face-identification. We propose a metric learning…

计算机视觉与模式识别 · 计算机科学 2020-10-20 Raphael Memmesheimer , Nick Theisen , Dietrich Paulus

This paper studies the problem of recovering a signal from one-bit compressed sensing measurements under a manifold model; that is, assuming that the signal lies on or near a manifold of low intrinsic dimension. We provide a convex recovery…

信息论 · 计算机科学 2020-07-24 Mark A. Iwen , Felix Krahmer , Sara Krause-Solberg , Johannes Maly

Recently, deep learning (DL) has been emerging as a promising approach for channel estimation and signal detection in wireless communications. The majority of the existing studies investigating the use of DL techniques in this domain focus…

网络与互联网体系结构 · 计算机科学 2024-04-04 Khalid Albagami , Nguyen Van Huynh , Geoffrey Ye Li

The reconstruction of a high resolution image given a low resolution observation is an ill-posed inverse problem in imaging. Deep learning methods rely on training data to learn an end-to-end mapping from a low-resolution input to a…

图像与视频处理 · 电气工程与系统科学 2023-07-19 Iman Marivani , Evaggelia Tsiligianni , Bruno Cornelis , Nikos Deligiannis

Deep Learning (DL) inversion is a promising method for real time interpretation of logging while drilling (LWD) resistivity measurements for well navigation applications. In this context, measurement noise may significantly affect inversion…

地球物理 · 物理学 2021-11-16 Kyubo Noh , David Pardo , Carlos Torres-Verdin

Compressed Sensing MRI reconstructs images of the body's internal anatomy from undersampled measurements, thereby reducing scan time. Recently, deep learning has shown great potential for reconstructing high-fidelity images from highly…

图像与视频处理 · 电气工程与系统科学 2025-04-07 Armeet Singh Jatyani , Jiayun Wang , Aditi Chandrashekar , Zihui Wu , Miguel Liu-Schiaffini , Bahareh Tolooshams , Anima Anandkumar