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This study examines Couette-Poiseuille flow of variable viscosity within a channel that is partially filled with a porous medium. To enhance its practical relevance, we assume that the porous medium is anisotropic with permeability varying…

流体动力学 · 物理学 2025-10-13 Timir Karmakar , Amrita Mandal

Temporal coherence is a valuable source of information in the context of optical flow estimation. However, finding a suitable motion model to leverage this information is a non-trivial task. In this paper we propose an unsupervised online…

计算机视觉与模式识别 · 计算机科学 2018-06-05 Daniel Maurer , Andrés Bruhn

Urbanization has underscored the importance of understanding the pedestrian wind environment in urban and architectural design contexts. Pedestrian Wind Comfort (PWC) focuses on the effects of wind on the safety and comfort of pedestrians…

计算工程、金融与科学 · 计算机科学 2023-11-15 Alfredo Vicente Clemente , Knut Erik Teigen Giljarhus , Luca Oggiano , Massimiliano Ruocco

Normalizing flows are an essential alternative to GANs for generative modelling, which can be optimized directly on the maximum likelihood of the dataset. They also allow computation of the exact latent vector corresponding to an image…

机器学习 · 计算机科学 2021-08-10 Sandeep Nagar , Marius Dufraisse , Girish Varma

The objective for this work is to develop a data-driven proxy to high-fidelity numerical flow simulations using digital images. The proposed model can capture the flow field and permeability in a large verity of digital porous media based…

图像与视频处理 · 电气工程与系统科学 2019-05-16 Ali Takbiri-Borujeni , Hadi Kazemi , Nasser Nasrabadi

Recent advances in machine learning have become increasingly popular in the applications of phase transitions and critical phenomena. By machine learning approaches, we try to identify the physical characteristics in the two-dimensional…

无序系统与神经网络 · 物理学 2021-01-25 Shu Cheng , Fei He , Huai Zhang , Ka-Di Zhu , Yaolin Shi

We propose Path-CNN, a method for the segmentation of centerlines of tubular structures by embedding convolutional neural networks (CNNs) into the progressive minimal path method. Minimal path methods are widely used for topology-aware…

计算机视觉与模式识别 · 计算机科学 2022-04-06 Wei Liao

We study performance characteristics of convolutional neural networks (CNN) for mobile computer vision systems. CNNs have proven to be a powerful and efficient approach to implement such systems. However, the system performance depends…

计算机视觉与模式识别 · 计算机科学 2018-03-28 Jussi Hanhirova , Teemu Kämäräinen , Sipi Seppälä , Matti Siekkinen , Vesa Hirvisalo , Antti Ylä-Jääski

We present in detail a set of algorithms to carry out fluid displacements in a dynamic pore-network model of immiscible two-phase flow in porous media. The algorithms are general and applicable to regular and irregular pore networks in two…

流体动力学 · 物理学 2019-07-31 Santanu Sinha , Magnus Aa. Gjennestad , Morten Vassvik , Alex Hansen

In the present work, 3D convolutional neural networks (CNNs) are trained to link random heterogeneous, two-phase materials of arbitrary phase fractions to their elastic macroscale stiffness thus replacing explicit homogenization…

材料科学 · 物理学 2021-09-08 Bernhard Eidel

Current research in Computer Vision has shown that Convolutional Neural Networks (CNN) give state-of-the-art performance in many classification tasks and Computer Vision problems. The embedding of CNN, which is the internal representation…

计算机视觉与模式识别 · 计算机科学 2015-08-04 Axel Angel

Lattice Boltzmann method (LBM) has been applied to predict flow properties of porous media including intrinsic permeability, where it is implicitly assumed that the LBM is equivalent to the incompressible (or near incompressible)…

流体动力学 · 物理学 2016-10-03 Jun Li , Minh Tuan Ho , Lei Wu , Yonghao Zhang

This paper is concerned with the development of a hybrid data-driven technique for unsteady fluid-structure interaction systems. The proposed data-driven technique combines the deep learning framework with a projection-based low-order…

计算物理 · 物理学 2019-02-15 T. P. Miyanawala , R. K. Jaiman

DeePore is a deep learning workflow for rapid estimation of a wide range of porous material properties based on the binarized micro-tomography images. By combining naturally occurring porous textures we generated 17700 semi-real 3-D…

材料科学 · 物理学 2020-10-13 Arash Rabbani , Masoud Babaei , Reza Shams , Ying Da Wang , Traiwit Chung

We propose a kinematic wave-based Deep Convolutional Neural Network (Deep CNN) to estimate high-resolution traffic speed fields from sparse probe vehicle trajectories. We introduce two key approaches that allow us to incorporate kinematic…

机器学习 · 计算机科学 2022-04-12 Bilal Thonnam Thodi , Zaid Saeed Khan , Saif Eddin Jabari , Monica Menendez

Convolutional Neural Networks (CNNs) are pivotal in image classification tasks due to their robust feature extraction capabilities. However, their high computational and memory requirements pose challenges for deployment in…

计算机视觉与模式识别 · 计算机科学 2025-01-28 Nathan Isong

This paper proposes a convolutional neural network (CNN)-based method that learns traffic as images and predicts large-scale, network-wide traffic speed with a high accuracy. Spatiotemporal traffic dynamics are converted to images…

机器学习 · 计算机科学 2017-04-11 Xiaolei Ma , Zhuang Dai , Zhengbing He , Jihui Na , Yong Wang , Yunpeng Wang

Convolutional neural networks (CNNs) have achieved superior accuracy in many visual related tasks. However, the inference process through intermediate layers is opaque, making it difficult to interpret such networks or develop trust in…

计算机视觉与模式识别 · 计算机科学 2021-10-22 Yael Konforti , Alon Shpigler , Boaz Lernerand Aharon Bar-Hillel

We propose a novel method that combines a convolutional neural network (CNN) with a long short-term memory (LSTM) mechanism for accurate prediction of intracranial hemorrhage on computed tomography (CT) scans. The CNN plays the role of a…

计算机视觉与模式识别 · 计算机科学 2020-06-29 Nhan T. Nguyen , Dat Q. Tran , Nghia T. Nguyen , Ha Q. Nguyen

It is difficult to recover the motion field from a real-world footage given a mixture of camera shake and other photometric effects. In this paper we propose a hybrid framework by interleaving a Convolutional Neural Network (CNN) and a…

计算机视觉与模式识别 · 计算机科学 2017-04-20 Wenbin Li , Da Chen , Zhihan Lv , Yan Yan , Darren Cosker