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Motion estimation across low-resolution frames and the reconstruction of high-resolution images are two coupled subproblems of multi-frame super-resolution. This paper introduces a new joint optimization approach for motion estimation and…

计算机视觉与模式识别 · 计算机科学 2016-09-07 Cosmin Bercea , Andreas Maier , Thomas Köhler

Millimeter-Wave (mm-Wave) frequency bands provide an opportunity for much wider channel bandwidth compared with the traditional sub-6 GHz band. Communication at mm-Waves is, however, quite challenging due to the severe propagation path…

信息论 · 计算机科学 2017-10-19 Xiaoshen Song , Saeid Haghighatshoar , Giuseppe Caire

Recently, Over-the-Air (OTA) computation has emerged as a promising federated learning (FL) paradigm that leverages the waveform superposition properties of the wireless channel to realize fast model updates. Prior work focused on the OTA…

机器学习 · 计算机科学 2024-04-01 Muhammad Faraz Ul Abrar , Nicolò Michelusi

In this paper we propose an approach for learning low dimensional optimized feature space with minimum intra-class variance and maximum inter-class variance. We address the problem of high-dimensionality of feature vectors extracted from…

图像与视频处理 · 电气工程与系统科学 2020-01-31 Abin Jose , Erik Stefan Ottlik , Christian Rohlfing , Jens-Rainer Ohm

Text-to-image diffusion models have shown great success in generating high-quality text-guided images. Yet, these models may still fail to semantically align generated images with the provided text prompts, leading to problems like…

计算机视觉与模式识别 · 计算机科学 2024-10-10 Yasi Zhang , Peiyu Yu , Ying Nian Wu

This paper considers coordinated linear precoding in downlink multicell multiuser orthogonal frequency-division multiple access (OFDMA) network. A less-complex, fast and provably convergent algorithm that maximizes the weighted sum-rate…

信息论 · 计算机科学 2017-08-17 Mirza Golam Kibria , Hidekazu Murata , Susumu Yoshida

Exposure correction methods aim to adjust the luminance while maintaining other luminance-unrelated information. However, current exposure correction methods have difficulty in fully separating luminance-related and luminance-unrelated…

计算机视觉与模式识别 · 计算机科学 2024-11-26 Jingchao Peng , Thomas Bashford-Rogers , Jingkun Chen , Haitao Zhao , Zhengwei Hu , Kurt Debattista

This paper is on Bayesian inference for parametric statistical models that are defined by a stochastic simulator which specifies how data is generated. Exact sampling is then possible but evaluating the likelihood function is typically…

机器学习 · 统计学 2020-03-02 Borislav Ikonomov , Michael U. Gutmann

The Balanced-Pairwise-Affinities (BPA) feature transform is designed to upgrade the features of a set of input items to facilitate downstream matching or grouping related tasks. The transformed set encodes a rich representation of high…

机器学习 · 计算机科学 2024-07-02 Daniel Shalam , Simon Korman

State-of-the-art diffusion models often rely on parameter-efficient fine-tuning to perform specialized image editing tasks. However, real-world applications require continual adaptation to new tasks while preserving previously learned…

计算机视觉与模式识别 · 计算机科学 2026-05-15 Yuehao Liu , Weijia Zhang , Xuanming Shang , Zhizhou Chen , Yanhao Ge , Shanyan Guan , Chao Ma

Reconstructing 3D shapes from a sequence of images has long been a problem of interest in computer vision. Classical Structure from Motion (SfM) methods have attempted to solve this problem through projected point displacement \& bundle…

计算机视觉与模式识别 · 计算机科学 2017-11-07 Rui Zhu , Chaoyang Wang , Chen-Hsuan Lin , Ziyan Wang , Simon Lucey

Low-dose computed tomography (LDCT) aims to minimize the radiation exposure to patients while maintaining diagnostic image quality. However, traditional CT reconstruction algorithms often struggle with the ill-posed nature of the problem,…

图像与视频处理 · 电气工程与系统科学 2024-10-17 Daisy Chen

The problem of beam alignment (BA) in a cell-free massive multiple-input multiple-output (CF-mMIMO) system operating at millimeter wave (mmWaves) carrier frequencies is considered in this paper. Two estimation algorithms are proposed, in…

信息论 · 计算机科学 2021-06-28 Stefano Buzzi , Carmen D'Andrea , Maria Fresia , Xiaofeng Wu

Motivation: Cellular Electron CryoTomography (CECT) is an emerging 3D imaging technique that visualizes subcellular organization of single cells at submolecular resolution and in near-native state. CECT captures large numbers of…

定量方法 · 定量生物学 2018-05-16 Yixiu Zhao , Xiangrui Zeng , Qiang Guo , Min Xu

Precision breast cancer (BC) risk assessment is crucial for developing individualized screening and prevention. Despite the promising potential of recent mammogram (MG) based deep learning models in predicting BC risk, they mostly overlook…

图像与视频处理 · 电气工程与系统科学 2024-09-12 Xin Wang , Tao Tan , Yuan Gao , Eric Marcus , Luyi Han , Antonio Portaluri , Tianyu Zhang , Chunyao Lu , Xinglong Liang , Regina Beets-Tan , Jonas Teuwen , Ritse Mann

In millimeter wave communications, beam training is an effective way to achieve beam alignment. Traditional beam training method allocates training resources equally to each beam in the pre-designed beam training codebook. The performance…

信息论 · 计算机科学 2018-10-25 Zihan Tang , Jun Wang , Jintao Wang , Jian Song

We investigate the role of the optimizer in determining the quality of the model fit for neural networks with a small to medium number of parameters. We study the performance of Adam, an algorithm for first-order gradient-based optimization…

机器学习 · 计算机科学 2022-05-17 John Taylor , Wenyi Wang , Biswajit Bala , Tomasz Bednarz

This paper investigates the application of non-orthogonal multiple access (NOMA) in millimeter wave (mmWave) communications by exploiting beamforming, user scheduling and power allocation. Random beamforming is invoked for reducing the…

信息论 · 计算机科学 2017-05-10 Jingjing Cui , Yuanwei Liu , Zhiguo Ding , Pingzhi Fan , Arumugam Nallanathan

In this paper, we investigate the problem of beam alignment in millimeter wave (mmWave) systems, and design an optimal algorithm to reduce the overhead. Specifically, due to directional communications, the transmitter and receiver beams…

信息论 · 计算机科学 2017-12-29 Morteza Hashemi , Ashutosh Sabharwal , C. Emre Koksal , Ness B. Shroff

Multi-camera SLAM systems offer a plethora of advantages, primarily stemming from their capacity to amalgamate information from a broader field of view, thereby resulting in heightened robustness and improved localization accuracy. In this…

机器人学 · 计算机科学 2024-04-02 Han Song , Cong Liu , Huafeng Dai