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Flow analysis carried out using phase contrast cardiac magnetic resonance imaging (PC-CMR) enables the quantification of important parameters that are used in the assessment of cardiovascular function. An essential part of this analysis is…

We propose a novel reduced-order methodology to describe complex multi-frequency fluid dynamics from time-resolved snapshot data. Starting point is the Cluster-based Network Model (CNM) thanks to its fully automatable development and human…

流体动力学 · 物理学 2025-07-29 Antonio Colanera , Nan Deng , Matteo Chiatto , Luigi de Luca , Bernd R. Noack

We study the problem of self-supervised 3D scene flow estimation from real large-scale raw point cloud sequences, which is crucial to various tasks like trajectory prediction or instance segmentation. In the absence of ground truth scene…

计算机视觉与模式识别 · 计算机科学 2024-08-14 Patrik Vacek , David Hurych , Tomáš Svoboda , Karel Zimmermann

Concept-Based Models (CBMs) are a class of deep learning models that provide interpretability by explaining predictions through high-level concepts. These models first predict concepts and then use them to perform a downstream task.…

机器学习 · 计算机科学 2025-06-27 David Debot , Pietro Barbiero , Gabriele Dominici , Giuseppe Marra

Dot-product attention has wide applications in computer vision and natural language processing. However, its memory and computational costs grow quadratically with the input size. Such growth prohibits its application on high-resolution…

计算机视觉与模式识别 · 计算机科学 2024-01-22 Zhuoran Shen , Mingyuan Zhang , Haiyu Zhao , Shuai Yi , Hongsheng Li

Flow models are effective at progressively generating realistic images, but they generally struggle to capture long-range dependencies during the generation process as they compress all the information from previous time steps into a single…

计算机视觉与模式识别 · 计算机科学 2025-06-17 Mude Hui , Rui-Jie Zhu , Songlin Yang , Yu Zhang , Zirui Wang , Yuyin Zhou , Jason Eshraghian , Cihang Xie

In recent years, the LiDAR images, as a 2D compact representation of 3D LiDAR point clouds, are widely applied in various tasks, e.g., 3D semantic segmentation, LiDAR point cloud compression (PCC). Among these works, the optical flow…

图像与视频处理 · 电气工程与系统科学 2021-08-31 Xuezhou Guo , Xuhu Lin , Lili Zhao , Zezhi Zhu , Jianwen Chen

Modern LVLMs still struggle to achieve fine-grained document understanding, such as OCR/translation/caption for regions of interest to the user, tasks that require the context of the entire page, or even multiple pages. Accordingly, this…

计算机视觉与模式识别 · 计算机科学 2024-05-24 Chenglong Liu , Haoran Wei , Jinyue Chen , Lingyu Kong , Zheng Ge , Zining Zhu , Liang Zhao , Jianjian Sun , Chunrui Han , Xiangyu Zhang

Scene flow estimation is the task to predict the point-wise or pixel-wise 3D displacement vector between two consecutive frames of point clouds or images, which has important application in fields such as service robots and autonomous…

计算机视觉与模式识别 · 计算机科学 2022-01-19 Guangming Wang , Yunzhe Hu , Xinrui Wu , Hesheng Wang

In deep CNN based models for semantic segmentation, high accuracy relies on rich spatial context (large receptive fields) and fine spatial details (high resolution), both of which incur high computational costs. In this paper, we propose a…

计算机视觉与模式识别 · 计算机科学 2020-07-13 Ping Hu , Federico Perazzi , Fabian Caba Heilbron , Oliver Wang , Zhe Lin , Kate Saenko , Stan Sclaroff

In moving camera videos, motion segmentation is commonly performed using the image plane motion of pixels, or optical flow. However, objects that are at different depths from the camera can exhibit different optical flows even if they share…

计算机视觉与模式识别 · 计算机科学 2015-11-06 Manjunath Narayana , Allen Hanson , Erik Learned-Miller

Discriminative correlation filters (DCF) with deep convolutional features have achieved favorable performance in recent tracking benchmarks. However, most of existing DCF trackers only consider appearance features of current frame, and…

计算机视觉与模式识别 · 计算机科学 2018-02-28 Zheng Zhu , Wei Wu , Wei Zou , Junjie Yan

Despite significant advancements, current large language models (LLMs) and vision-language models (LVLMs) continue to struggle with complex, multi-step, cross-modal common sense reasoning tasks, often exhibiting a lack of "deliberative…

计算与语言 · 计算机科学 2025-08-06 Wenjie Luo , Ruocheng Li , Shanshan Zhu , Julian Perry

This project aims to develop a robust video surveillance system, which can segment videos into smaller clips based on the detection of activities. It uses CCTV footage, for example, to record only major events-like the appearance of a…

计算机视觉与模式识别 · 计算机科学 2025-02-18 Shahran Rahman Alve

Although Transformers have successfully transitioned from their language modelling origins to image-based applications, their quadratic computational complexity remains a challenge, particularly for dense prediction. In this paper we…

计算机视觉与模式识别 · 计算机科学 2022-08-30 Yutong Xie , Jianpeng Zhang , Yong Xia , Anton van den Hengel , Qi Wu

We propose a novel end-to-end deep scene flow model, called PointPWC-Net, on 3D point clouds in a coarse-to-fine fashion. Flow computed at the coarse level is upsampled and warped to a finer level, enabling the algorithm to accommodate for…

计算机视觉与模式识别 · 计算机科学 2020-08-03 Wenxuan Wu , Zhiyuan Wang , Zhuwen Li , Wei Liu , Li Fuxin

Optical flow estimation is a classical yet challenging task in computer vision. One of the essential factors in accurately predicting optical flow is to alleviate occlusions between frames. However, it is still a thorny problem for current…

计算机视觉与模式识别 · 计算机科学 2022-11-29 Shangkun Sun , Yuanqi Chen , Yu Zhu , Guodong Guo , Ge Li

Optical flow estimation is a fundamental task in computer vision. Recent direct-regression methods using deep neural networks achieve remarkable performance improvement. However, they do not explicitly capture long-term motion…

计算机视觉与模式识别 · 计算机科学 2022-03-23 Shiyu Zhao , Long Zhao , Zhixing Zhang , Enyu Zhou , Dimitris Metaxas

Multi-object tracking (MOT) is a fundamental task in computer vision that requires continuously tracking multiple targets while maintaining consistent identities across frames. However, most existing approaches primarily rely on…

计算机视觉与模式识别 · 计算机科学 2026-05-12 Yanchao Wang , Dawei Zhang , Chengzhuan Yang , Wei Liu , Minglu Li , Hua Wang , Zhonglong Zheng , Ming-Hsuan Yang

Critical research about camera-and-LiDAR-based semantic object segmentation for autonomous driving significantly benefited from the recent development of deep learning. Specifically, the vision transformer is the novel ground-breaker that…

计算机视觉与模式识别 · 计算机科学 2024-09-10 Junyi Gu , Mauro Bellone , Tomáš Pivoňka , Raivo Sell