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相关论文: Deep Learning Techniques for Atmospheric Turbulenc…

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Restoration and enhancement are essential for improving the quality of videos captured under atmospheric turbulence conditions, aiding visualization, object detection, classification, and tracking in surveillance systems. In this paper, we…

计算机视觉与模式识别 · 计算机科学 2025-03-25 Paul Hill , Zhiming Liu , Nantheera Anantrasirichai

Engineering design and scientific analysis rely upon computer simulations of turbulent fluid flows using turbulence models. These turbulence models are empirical and approximate, leading to large uncertainties in their predictions that…

流体动力学 · 物理学 2024-05-28 Minghan Chu , Weicheng Qian

In many applications of long-range imaging, we are faced with a scenario where a person appearing in the captured imagery is often degraded by atmospheric turbulence. However, restoring such degraded images for face verification is…

计算机视觉与模式识别 · 计算机科学 2023-07-26 Kangfu Mei , Vishal M. Patel

The problem of classifying turbulent environments from partial observation is key for some theoretical and applied fields, from engineering to earth observation and astrophysics, e.g. to precondition searching of optimal control policies in…

流体动力学 · 物理学 2022-10-19 Michele Buzzicotti , Fabio Bonaccorso

Rain removal in images/videos is still an important task in computer vision field and attracting attentions of more and more people. Traditional methods always utilize some incomplete priors or filters (e.g. guided filter) to remove rain…

计算机视觉与模式识别 · 计算机科学 2019-06-25 Yinglong Wang , Qinfeng Shi , Ehsan Abbasnejad , Chao Ma , Xiaoping Ma , Bing Zeng

We introduce a novel technique to mitigate the adverse effects of atmospheric turbulence on astronomical imaging. Utilizing a video-to-image neural network trained on simulated data, our method processes a sliding sequence of short-exposure…

天体物理仪器与方法 · 物理学 2024-05-09 Spencer Bialek , Emmanuel Bertin , Sébastien Fabbro , Hervé Bouy , Jean-Pierre Rivet , Olivier Lai , Jean-Charles Cuillandre

While Fourier ptychography (FP) offers super-resolution for macroscopic imaging, its real-world application is severely hampered by atmospheric turbulence, a challenge largely unaddressed in existing macroscopic FP research operating under…

光学 · 物理学 2025-07-08 Junhao Zhang , Weilong Wei , Kaiyuan Yang , Qiang Zhou , Haotong Ma , Ge Ren , Zongliang Xie

Turbulent airflow in the atmosphere and the resulting random fluctuations in its refractive index have long been known as a major cause of image deterioration in astronomical imaging and figures among the obstacles for reliable optical…

量子物理 · 物理学 2015-06-04 Marcelo V. da Cunha Pereira , Luísa A. P. Filpi , Carlos H. Monken

The complex physics involved in atmospheric turbulence makes it very difficult for ground-based astronomy to build accurate scintillation models and develop efficient methodologies to remove this highly structured noise from valuable…

天体物理仪器与方法 · 物理学 2022-05-18 Alejandra Rocha-Solache , Iván Rodríguez-Montoya , David Sánchez-Argüelles , Itziar Aretxaga

A novel approach is presented to recover an image degraded by atmospheric turbulence. Given a sequence of frames affected by turbulence, we construct a variational model to characterize the static image. The optimization problem is solved…

计算机视觉与模式识别 · 计算机科学 2024-11-05 Yu Mao , Jerome Gilles

In this paper, we address the problem of dynamic scene deblurring in the presence of motion blur. Restoration of images affected by severe blur necessitates a network design with a large receptive field, which existing networks attempt to…

计算机视觉与模式识别 · 计算机科学 2022-02-08 Kuldeep Purohit , A. N. Rajagopalan

Recovering the turbulence-degraded point spread function from a single intensity image is important for a variety of imaging applications. Here, a deep learning model based on a convolutional neural network is applied to intensity images to…

图像与视频处理 · 电气工程与系统科学 2023-06-28 Abu Bucker Siddik , Steven Sandoval , David Voelz , Laura E Boucheron , Luis Varela

A central problem of turbulence theory is to produce a predictive model for turbulent fluxes. These have profound implications for virtually all aspects of the turbulence dynamics. In magnetic confinement devices, drift-wave turbulence…

等离子体物理 · 物理学 2020-07-01 R. A. Heinonen , P. H. Diamond

Imaging at a long distance often requires advanced image restoration algorithms to compensate for the distortions caused by atmospheric turbulence. However, unlike many standard restoration problems such as deconvolution, the forward image…

图像与视频处理 · 电气工程与系统科学 2022-09-14 Stanley H. Chan

The free-space transfer of high-fidelity optical signals between remote locations has many applications, including both classical and quantum communication, precision navigation, clock synchronization, etc. The physical processes that…

量子物理 · 物理学 2017-07-21 D. Vasylyev , A. A. Semenov , W. Vogel

Data-driven turbulence modeling has been considered an effective method for improving the prediction accuracy of Reynolds-averaged Navier-Stokes equations. Related studies aimed to solve the discrepancy of traditional turbulence modeling by…

流体动力学 · 物理学 2020-10-19 Yuhui Yin , Pu Yang , Yufei Zhang , Haixin Chen , Song Fu

Perfect channel estimation is very hard, time/ power consuming, and expensive; so it is not preferred (e.g. in mobile) communication systems. This paper seeks for new, cheap, low complexity, deep learning based solution. Several new…

信号处理 · 电气工程与系统科学 2020-01-29 M. A. Amirabadi

Turbulence-degraded image frames are distorted by both turbulent deformations and space-time-varying blurs. To suppress these effects, we propose a multi-frame reconstruction scheme to recover a latent image from the observed image…

计算机视觉与模式识别 · 计算机科学 2017-12-12 Chun Pong Lau , Yu Hin Lai , Lok Ming Lui

We present a deep-learning approach to restore a sequence of turbulence-distorted video frames from turbulent deformations and space-time varying blurs. Instead of requiring a massive training sample size in deep networks, we purpose a…

计算机视觉与模式识别 · 计算机科学 2018-08-14 Wai Ho Chak , Chun Pong Lau , Lok Ming Lui

Face and person recognition have recently achieved remarkable success under challenging scenarios, such as off-pose and cross-spectrum matching. However, long-range recognition systems are often hindered by atmospheric turbulence, leading…

计算机视觉与模式识别 · 计算机科学 2023-08-24 Kshitij Nikhal , Benjamin S. Riggan