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Detecting a specific horizon in seismic images is a valuable tool for geological interpretation. Because hand-picking the locations of the horizon is a time-consuming process, automated computational methods were developed starting three…

地球物理 · 物理学 2018-12-31 Bas Peters , Justin Granek , Eldad Haber

Compact binary systems emit gravitational radiation which is potentially detectable by current Earth bound detectors. Extracting these signals from the instruments' background noise is a complex problem and the computational cost of most…

天体物理仪器与方法 · 物理学 2022-02-11 Marlin B. Schäfer , Ondřej Zelenka , Alexander H. Nitz , Frank Ohme , Bernd Brügmann

Sonar-based indoor mapping systems have been widely employed in robotics for several decades. While such systems are still the mainstream in underwater and pipe inspection settings, the vulnerability to noise reduced, over time, their…

机器人学 · 计算机科学 2024-09-19 Usama Saqib , Letizia Marchegiani , Jesper Rindom Jensen

The significant imbalance between power generation and load caused by severe disturbance may make the power system unable to maintain a steady frequency. If the post-disturbance dynamic frequency features can be predicted and emergency…

信号处理 · 电气工程与系统科学 2019-09-23 Jintian Lin , Yichao Zhang , Xiaoru Wang , Qingyue Chen

Estimating porosity models via seismic data is challenging due to the signal noise and insufficient resolution of seismic data. Although impedance inversion is often used by combining with well logs, several hurdles remain to retrieve…

地球物理 · 物理学 2021-11-29 Honggeun Jo , Yongchae Cho , Michael J. Pyrcz , Hewei Tang , Pengcheng Fu

Machine learning-based seismic processing models are typically trained separately to perform specific seismic processing tasks (SPTs), and as a result, require plenty of training data. However, preparing training data sets is not trivial,…

地球物理 · 物理学 2023-09-21 Shijun Cheng , Randy Harsuko , Tariq Alkhalifah

Planar homography estimation is foundational to many computer vision problems, such as Simultaneous Localization and Mapping (SLAM) and Augmented Reality (AR). However, conditions of high variance confound even the state-of-the-art…

计算机视觉与模式识别 · 计算机科学 2020-10-23 David Niblick , Avinash Kak

Atmospheric turbulence distorts visual imagery and is always problematic for information interpretation by both human and machine. Most well-developed approaches to remove atmospheric turbulence distortion are model-based. However, these…

计算机视觉与模式识别 · 计算机科学 2022-05-10 Nantheera Anantrasirichai

Two architectures that generalize convolutional neural networks (CNNs) for the processing of signals supported on graphs are introduced. We start with the selection graph neural network (GNN), which replaces linear time invariant filters…

信号处理 · 电气工程与系统科学 2019-01-30 Fernando Gama , Antonio G. Marques , Geert Leus , Alejandro Ribeiro

Convolutional neural networks (CNNs) based solutions have achieved state-of-the-art performances for many computer vision tasks, including classification and super-resolution of images. Usually the success of these methods comes with a cost…

计算机视觉与模式识别 · 计算机科学 2019-12-24 Yawei Li , Shuhang Gu , Luc Van Gool , Radu Timofte

Ground Penetrating Radar (GPR) has been widely used to estimate the healthy operation of some urban roads and underground facilities. When identifying subsurface anomalies by GPR in an area, the obtained data could be unbalanced, and the…

计算机视觉与模式识别 · 计算机科学 2022-11-23 Xiren Zhou , Shikang Liu , Ao Chen , Yizhan Fan , Huanhuan Chen

Marine seismic interference noise occurs when energy from nearby marine seismic source vessels is recorded during a seismic survey. Such noise tends to be well preserved over large distances and cause coherent artifacts in the recorded…

Post-stack seismic inversion is a widely used technique to retrieve high-resolution acoustic impedance models from migrated seismic data. Its modelling operator assumes that a migrated seismic data can be generated from the convolution of a…

地球物理 · 物理学 2024-01-02 Nick Luiken , Juan Romero , Miguel Corrales , Matteo Ravasi

In recent work, the authors have developed a generic methodology for calibrating the noise in fluid dynamics stochastic partial differential equations where the stochasticity was introduced to parametrize subgrid-scale processes. The…

机器学习 · 统计学 2024-03-19 Dan Crisan , Oana Lang , Alexander Lobbe

Understanding Earth's subsurface structures has been and continues to be an essential component of various applications such as environmental monitoring, carbon sequestration, and oil and gas exploration. By viewing the seismic volumes that…

计算机视觉与模式识别 · 计算机科学 2018-12-26 G. AlRegib , M. Deriche , Z. Long , H. Di , Z. Wang , Y. Alaudah , M. Shafiq , M. Alfarraj

Diffusion magnetic resonance imaging is sensitive to the microstructural properties of brain tissue. However, estimating clinically and scientifically relevant microstructural properties from the measured signals remains a highly…

图像与视频处理 · 电气工程与系统科学 2024-02-27 Leevi Kerkelä , Kiran Seunarine , Filip Szczepankiewicz , Chris A. Clark

The detection of earthquakes is a fundamental prerequisite for seismology and contributes to various research areas, such as forecasting earthquakes and understanding the crust/mantle structure. Recent advances in machine learning…

地球物理 · 物理学 2023-07-14 Tomoki Tokuda , Hiromichi Nagao

Robust disturbance rejection remains a longstanding challenge in humanoid locomotion, particularly on unstructured terrains where sensing is unreliable and model mismatch is pronounced. While perception information, such as height map,…

机器人学 · 计算机科学 2026-02-04 Qixin Zeng , Hongyin Zhang , Shangke Lyu , Junxi Jin , Donglin Wang , Chao Huang

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

Spatial processes observed in various fields, such as climate and environmental science, often occur on a large scale and demonstrate spatial nonstationarity. Fitting a Gaussian process with a nonstationary Mat\'ern covariance is…

机器学习 · 统计学 2023-06-21 Pratik Nag , Yiping Hong , Sameh Abdulah , Ghulam A. Qadir , Marc G. Genton , Ying Sun
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