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In this paper, we propose a new data augmentation method, Random Shadows and Highlights (RSH) to acquire robustness against lighting perturbations. Our method creates random shadows and highlights on images, thus challenging the neural…

计算机视觉与模式识别 · 计算机科学 2021-01-19 Osama Mazhar , Jens Kober

This study aims to improve the accuracy of weather predictions by discovering spatial correlations between Earth observations and atmospheric states. Existing numerical weather prediction (NWP) systems predict future atmospheric states at…

机器学习 · 计算机科学 2025-11-11 Hyeon-Ju Jeon , Jeon-Ho Kang , In-Hyuk Kwon , O-Joun Lee

Shadow detection is crucial for accurate scene understanding in computer vision, yet it is challenged by the diverse appearances of shadows caused by variations in illumination, object geometry, and scene context. Deep learning models often…

计算机视觉与模式识别 · 计算机科学 2024-10-14 Leyi Zhu , Weihuang Liu , Xinyi Chen , Zimeng Li , Xuhang Chen , Zhen Wang , Chi-Man Pun

In transportation cyber-physical systems (CPS), ensuring safety and reliability in real-time decision-making is essential for successfully deploying autonomous vehicles and intelligent transportation networks. However, these systems face…

Cities today generate enormous streams of data from sensors, cameras, and connected infrastructure. While this information offers unprecedented opportunities to improve urban life, most existing systems struggle with scale, latency, and…

人工智能 · 计算机科学 2025-09-03 Kishor Datta Gupta , Md Manjurul Ahsan , Mohd Ariful Haque , Roy George , Azmine Toushik Wasi

Shadow removal aims to restore images that are partially degraded by shadows, where the degradation is spatially localized and non-uniform. Unlike general restoration tasks that assume global degradation, shadow removal can leverage…

计算机视觉与模式识别 · 计算机科学 2025-09-26 Linhao Li , Boya Jin , Zizhe Li , Lanqing Guo , Hao Cheng , Bo Li , Yongfeng Dong

We study the problem of extracting biometric information of individuals by looking at shadows of objects cast on diffuse surfaces. We show that the biometric information leakage from shadows can be sufficient for reliable identity inference…

计算机视觉与模式识别 · 计算机科学 2022-10-05 Safa C. Medin , Amir Weiss , Frédo Durand , William T. Freeman , Gregory W. Wornell

Cloud computing, thanks to the pervasiveness of information technologies, provides a foundational environment for developing IT applications, offering organizations virtually unlimited and flexible computing resources on a pay-per-use…

分布式、并行与集群计算 · 计算机科学 2025-04-15 Han Wang , Sukhpal Singh Gill , Steve Uhlig

Moving clouds affect the global solar irradiance that reaches the surface of the Earth. As a consequence, the amount of resources available to meet the energy demand in a smart grid powered using Photovoltaic (PV) systems depends on the…

图像与视频处理 · 电气工程与系统科学 2022-01-04 Guillermo Terrén-Serrano , Manel Martínez-Ramón

The nonlinear synergy between global warming and urbanization is amplifying extreme climate risks in cities worldwide. While observations and simulations confirm these compounding effects, two fundamental bottlenecks impede predictive…

大气与海洋物理 · 物理学 2026-05-04 Qiuxia Wu , Yaqiang Wang , Huabing Ke

The growing homelessness crisis in the U.S. presents complex social, economic, and public health challenges, straining shelters, healthcare, and social services while limiting effective interventions. Traditional assessment methods struggle…

计算机与社会 · 计算机科学 2025-03-24 Julia Gersey , Rose Allegrette , Joshua Lian , Zawad Munshi , Aarti Phatke

Satellite-collected nighttime light provides a unique perspective on human activities, including urbanization, population growth, and epidemics. Yet, long-term and fine-grained nighttime light observations are lacking, leaving the analysis…

图像与视频处理 · 电气工程与系统科学 2025-11-10 Jinyu Guo , Feng Zhang , Hang Zhao , Baoxiang Pan , Linlu Mei

Cloud is critical for planetary climate and habitability, but it is also one of the most challenging parts of studying planets in and beyond the solar system. Here we use a cloud-resolving model (CRM) with high resolution (2 km) in a…

地球与行星天体物理 · 物理学 2022-08-17 Qiyu Song , Jun Yang , Hang Luo , Cheng Li , Shizuo Fu

Sonar imaging is fundamental to underwater exploration, with critical applications in defense, navigation, and marine research. Shadow regions, in particular, provide essential cues for object detection and classification, yet existing…

计算机视觉与模式识别 · 计算机科学 2025-06-03 Kamal Basha S , Anukul Kiran B , Athira Nambiar , Suresh Rajendran

Transportation networks serve as windows into the complex world of urban systems. By properly characterizing a road network, we can therefore better understand its encompassing urban system. This study offers a geometrical approach towards…

物理与社会 · 物理学 2015-07-15 Farideddin Peiravian , Sybil Derrible

Potentially influential spaces in the spatial networks of cities can be detected by means of the entropy participation ratios. Local (connectivity) and global (centrality) entropies are considered. While the connectivity entropy has a…

物理与社会 · 物理学 2007-09-28 D. Volchenkov , Ph. Blanchard

A typical sunspot, as seen in white-light intensity images, has a two part structure: a dark umbra and a lighter penumbra. Such distinction primarily arises due to the different orientations of magnetic fields in these two regions. In this…

太阳与恒星天体物理 · 物理学 2019-05-17 Bibhuti Kumar Jha , Sudip Mandal , Dipankar Banerjee

Accurately forecasting urban development and its environmental and climate impacts critically depends on realistic models of the spatial structure of the built environment, and of its dependence on key factors such as population and…

机器学习 · 计算机科学 2019-07-24 Adrian Albert , Jasleen Kaur , Emanuele Strano , Marta Gonzalez

Predicting traffic conditions has been recently explored as a way to relieve traffic congestion. Several pioneering approaches have been proposed based on traffic observations of the target location as well as its adjacent regions, but they…

人工智能 · 计算机科学 2023-08-22 Xingyi Cheng , Ruiqing Zhang , Jie Zhou , Wei Xu

Climate models lack the necessary resolution for urban climate studies, requiring computationally intensive processes to estimate high resolution air temperatures. In contrast, Data-driven approaches offer faster and more accurate air…

大气与海洋物理 · 物理学 2024-09-05 Fatemeh Chajaei , Hossein Bagheri