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Estimating continuous optical flow is a fundamental yet challenging problem in dynamic visual perception. Event-based cameras, with microsecond latency and high dynamic range, capture brightness changes asynchronously, offering a unique…

计算机视觉与模式识别 · 计算机科学 2026-05-27 Rui Hu , Song Wu , Wen Yang , Jinjian Wu

Despite tremendous recent progress, Flow Matching methods still suffer from exposure bias due to discrepancies in training and inference. This paper investigates the root causes of exposure bias in Flow Matching, including: (1) the model…

计算机视觉与模式识别 · 计算机科学 2026-02-09 Guanbo Huang , Jingjia Mao , Fanding Huang , Fengkai Liu , Xiangyang Luo , Yaoyuan Liang , Jiasheng Lu , Xiaoe Wang , Pei Liu , Ruiliu Fu , Shao-Lun Huang

Reliable quantification of epistemic and aleatoric uncertainty is of crucial importance in applications where models are trained in one environment but applied to multiple different environments, often seen in real-world applications for…

机器学习 · 计算机科学 2023-11-02 Simon Dirmeier , Ye Hong , Yanan Xin , Fernando Perez-Cruz

Accurate characterization of subsurface heterogeneity is challenging but essential for applications such as reservoir pressure management, geothermal energy extraction and CO$_2$, H$_2$, and wastewater injection operations. This challenge…

机器学习 · 计算机科学 2026-04-16 Harun Ur Rashid , Mingxin Li , Aleksandra Pachalieva , Georg Stadler , Daniel O'Malley

Short- or mid-term rainfall forecasting is a major task with several environmental applications such as agricultural management or flood risk monitoring. Existing data-driven approaches, especially deep learning models, have shown…

信号处理 · 电气工程与系统科学 2021-01-13 Vincent Bouget , Dominique Béréziat , Julien Brajard , Anastase Charantonis , Arthur Filoche

Accurately characterizing the true redshift (true-$z$) distribution of a photometric redshift (photo-$z$) sample is critical for cosmological analyses in imaging surveys. Clustering-based techniques, which include clustering-redshift (CZ)…

宇宙学与河外天体物理 · 物理学 2024-12-18 Weilun Zheng , Kwan Chuen Chan , Haojie Xu , Le Zhang , Ruiyu Song

Learning accurate scene reconstruction without pose priors in neural radiance fields is challenging due to inherent geometric ambiguity. Recent development either relies on correspondence priors for regularization or uses off-the-shelf flow…

计算机视觉与模式识别 · 计算机科学 2025-03-14 Xunzhi Zheng , Dan Xu

Adaptive inference is a promising technique to improve the computational efficiency of deep models at test time. In contrast to static models which use the same computation graph for all instances, adaptive networks can dynamically adjust…

计算机视觉与模式识别 · 计算机科学 2019-08-20 Hao Li , Hong Zhang , Xiaojuan Qi , Ruigang Yang , Gao Huang

Recent learning-based methods for event-based optical flow estimation utilize cost volumes for pixel matching but suffer from redundant computations and limited scalability to higher resolutions for flow refinement. In this work, we take…

计算机视觉与模式识别 · 计算机科学 2025-06-23 Daikun Liu , Lei Cheng , Teng Wang , changyin Sun

Accurate blur estimation is essential for high-performance imaging across various applications. Blur is typically represented by the point spread function (PSF). In this paper, we propose a physics-informed PSF learning framework for…

计算机视觉与模式识别 · 计算机科学 2025-03-12 Liqun Chen , Yuxuan Li , Jun Dai , Jinwei Gu , Tianfan Xue

Unsupervised optical flow methods typically lack reliable uncertainty estimation, limiting their robustness and interpretability. We propose U$^{2}$Flow, the first recurrent unsupervised framework that jointly estimates optical flow and…

计算机视觉与模式识别 · 计算机科学 2026-04-14 Xunpei Sun , Wenwei Lin , Yi Chang , Gang Chen

In image restoration, single-step discriminative mappings often lack fine details via expectation learning, whereas generative paradigms suffer from inefficient multi-step sampling and noise-residual coupling. To address this dilemma, we…

计算机视觉与模式识别 · 计算机科学 2026-04-22 Zihao Fan , Xin Lu , Jie Xiao , Dong Li , Jie Huang , Xueyang Fu

Machine learning models are gaining increasing popularity in the domain of fluid dynamics for their potential to accelerate the production of high-fidelity computational fluid dynamics data. However, many recently proposed machine learning…

机器学习 · 计算机科学 2023-03-01 Dule Shu , Zijie Li , Amir Barati Farimani

Diffusion models (DMs) have emerged as powerful generative models for solving inverse problems, offering a good approximation of prior distributions of real-world image data. Typically, diffusion models rely on large-scale clean signals to…

计算机视觉与模式识别 · 计算机科学 2024-07-17 Yifei Wang , Weimin Bai , Weijian Luo , Wenzheng Chen , He Sun

Model-Heterogeneous Federated Learning (Hetero-FL) has attracted growing attention for its ability to aggregate knowledge from heterogeneous models while keeping private data locally. To better aggregate knowledge from clients, ensemble…

机器学习 · 计算机科学 2025-10-15 Yichen Li , Xiuying Wang , Wenchao Xu , Haozhao Wang , Yining Qi , Jiahua Dong , Ruixuan Li

Estimating redshift is a central task in astrophysics, but its measurement is costly and time-consuming. In addition, current image-based methods are often validated on homogeneous datasets. The development and comparison of networks able…

天体物理仪器与方法 · 物理学 2026-03-17 Alessandro Meroni , Nicolò Oreste Pinciroli Vago , Piero Fraternali

Unsupervised anomaly detection is coming into the spotlight these days in various practical domains due to the limited amount of anomaly data. One of the major approaches for it is a normalizing flow which pursues the invertible…

机器学习 · 计算机科学 2022-10-28 Yeongmin Kim , Huiwon Jang , DongKeon Lee , Ho-Jin Choi

Wide field images taken in several photometric bands allow simultaneous measurement of redshifts for thousands of galaxies. A variety of algorithms to make this measurement have appeared in the last few years, the majority of which can be…

宇宙学与河外天体物理 · 物理学 2016-05-11 Juan De Vicente , Eusebio Sánchez , Ignacio Sevilla

Quantifying uncertainty in medical image segmentation applications is essential, as it is often connected to vital decision-making. Compelling attempts have been made in quantifying the uncertainty in image segmentation architectures, e.g.…

计算机视觉与模式识别 · 计算机科学 2021-08-06 M. M. A. Valiuddin , C. G. A. Viviers , R. J. G. van Sloun , P. H. N. de With , F. van der Sommen

We introduce a novel matching algorithm, called DeepMatching, to compute dense correspondences between images. DeepMatching relies on a hierarchical, multi-layer, correlational architecture designed for matching images and was inspired by…

计算机视觉与模式识别 · 计算机科学 2015-10-12 Jerome Revaud , Philippe Weinzaepfel , Zaid Harchaoui , Cordelia Schmid