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A Generative Adversarial Network (GAN) with generator $G$ trained to model the prior of images has been shown to perform better than sparsity-based regularizers in ill-posed inverse problems. Here, we propose a new method of deploying a…

机器学习 · 计算机科学 2019-10-25 Ankit Raj , Yuqi Li , Yoram Bresler

The large untapped spectrum in sub-THz allows for ultra-high throughput communication to realize many seemingly impossible applications in 6G. Phase noise (PN) is one key hardware impairment, which is accentuated as we increase the…

信号处理 · 电气工程与系统科学 2024-06-28 Dileepa Marasinghe , Le Hang Nguyen , Jafar Mohammadi , Yejian Chen , Thorsten Wild , Nandana Rajatheva

This work introduces the first closed-loop adaptive optics (AO) system capable of optically correcting aberrations in real-time without a guidestar or a wavefront sensor. Nearly 40 years ago, Cederquist et al. demonstrated that asymmetric…

图像与视频处理 · 电气工程与系统科学 2026-05-14 Weiyun Jiang , Haiyun Guo , Christopher A. Metzler , Ashok Veeraraghavan

Current neural networks-based object detection approaches processing LiDAR point clouds are generally trained from one kind of LiDAR sensors. However, their performances decrease when they are tested with data coming from a different LiDAR…

计算机视觉与模式识别 · 计算机科学 2020-12-11 Ruddy Théodose , Dieumet Denis , Thierry Chateau , Vincent Frémont , Paul Checchin

Owing to the data explosion and rapid development of artificial intelligence (AI), particularly deep neural networks (DNNs), the ever-increasing demand for large-scale matrix-vector multiplication has become one of the major issues in…

硬件体系结构 · 计算机科学 2023-08-04 Minning Zhu , Tzu-Wei Kuo , Chung-Tse Michael Wu

Fourier ptychography (FP) is a newly developed computational imaging approach that achieves both high resolution and wide field of view by stitching a series of low-resolution images captured under angle-varied illumination. So far, many…

图像与视频处理 · 电气工程与系统科学 2019-09-20 Yongbing Zhang , Yangzhe Liu , Xiu Li , Shaowei Jiang , Krishna Dixit , Xinfeng Zhang , Xiangyang Ji

Photonic Lanterns (PLs) are tapered waveguides that gradually transition from a multi-mode fiber geometry to a bundle of single-mode fibers (SMFs). They can efficiently couple multi-mode telescope light into a multi-mode fiber entrance at…

天体物理仪器与方法 · 物理学 2024-02-14 Yoo Jung Kim , Michael P. Fitzgerald , Jonathan Lin , Steph Sallum , Yinzi Xin , Nemanja Jovanovic , Sergio Leon-Saval

The photonic lantern (PL) is a tapered waveguide that can efficiently couple light into multiple single-mode optical fibers. Such devices are currently being considered for a number of tasks, including the coupling of telescopes and…

天体物理仪器与方法 · 物理学 2022-09-28 Jonathan Lin , Michael Fitzgerald , Yinzi Xin , Olivier Guyon , Sergio Leon-Saval , Barnaby Norris , Nemanja Jovanovic

The sensitivity of the the pyramid wavefront sensor (PyWFS) has made it a popular choice for astronomical adaptive optics (AAO) systems, and it is at its most sensitive when it is used without modulation of the input beam. In non-modulated…

天体物理仪器与方法 · 物理学 2018-05-09 Richard A. Frazin

We present numerical characterizations of the wavefront sensing performance for few-mode photonic lantern wavefront sensors (PLWFSs). These characterizations include calculations of throughput, control space, sensor linearity, and an…

Exoplanet research is essential for understanding planetary formation and the potential for life beyond our solar system. The direct imaging method captures exoplanet light while minimizing light from the host star. This is conventionally…

天体物理仪器与方法 · 物理学 2025-12-02 Suvinay Goyal , Yinzi Xin , Nemanja Jovanovic , Dimitri Mawet , Michael P. Fitzgerald

Photonic neural networks offer a promising alternative to traditional electronic systems for machine learning accelerators due to their low latency and energy efficiency. However, the challenge of implementing the backpropagation algorithm…

The Pyramid Wavefront Sensor (PyWFS) is highly nonlinear and requires the use of beam modulation to successfully close an AO loop under varying atmospheric turbulence conditions, at the expense of a loss in sensitivity. In this work we…

天体物理仪器与方法 · 物理学 2024-07-17 Camilo Weinberger , Jorge Tapia , Benoit Neichel , Esteban Vera

Among interpretable machine learning methods, the class of Generalised Additive Neural Networks (GANNs) is referred to as Self-Explaining Neural Networks (SENN) because of the linear dependence on explicit functions of the inputs. In binary…

机器学习 · 计算机科学 2021-06-17 Paulo J. G. Lisboa , Sandra Ortega-Martorell , Sadie Cashman , Ivan Olier

A significant advancement in nonlinear projection-based model order reduction (PMOR) is presented through a highly effective methodology. This methodology employs Gaussian process regression (GPR) and radial basis function (RBF)…

流体动力学 · 物理学 2026-01-22 S. Ares de Parga , Radek Tezaur , Carlos G. Hernández , Charbel Farhat

Non-parametric, additive models are able to capture complex data dependencies in a flexible, yet interpretable way. However, choosing the format of the additive components often requires non-trivial data exploration. Here, as an…

机器学习 · 计算机科学 2022-02-23 Oskar Allerbo , Rebecka Jörnsten

Panoramic Annular Lens (PAL) composed of few lenses has great potential in panoramic surrounding sensing tasks for mobile and wearable devices because of its tiny size and large Field of View (FoV). However, the image quality of tiny-volume…

图像与视频处理 · 电气工程与系统科学 2023-01-02 Qi Jiang , Hao Shi , Lei Sun , Shaohua Gao , Kailun Yang , Kaiwei Wang

Emerging deep-learning-based lens library pre-training (LensLib-PT) pipeline offers a new avenue for blind lens aberration correction by training a universal neural network, demonstrating strong capability in handling diverse unknown…

图像与视频处理 · 电气工程与系统科学 2025-11-26 Qi Jiang , Xiaolong Qian , Yao Gao , Lei Sun , Kailun Yang , Zhonghua Yi , Wenyong Li , Ming-Hsuan Yang , Luc Van Gool , Kaiwei Wang

Inhomogeneities in the refractive index of a biological sample can introduce phase aberrationsin microscopy systems, severely impairing the quality of images. Adaptive optics can be employed to correct for phase aberrations and improve…

Lesion segmentation on nasal endoscopic images is challenging due to its complex lesion features. Fully-supervised deep learning methods achieve promising performance with pixel-level annotations but impose a significant annotation burden…

计算机视觉与模式识别 · 计算机科学 2026-02-11 Pengyu Jie , Wanquan Liu , Chenqiang Gao , Yihui Wen , Rui He , Weiping Wen , Pengcheng Li , Jintao Zhang , Deyu Meng