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Being able to effectively identify clouds and monitor their evolution is one important step toward more accurate quantitative precipitation estimation and forecast. In this study, a new gradient-based cloud-image segmentation technique is…

Computer Vision and Pattern Recognition · Computer Science 2018-10-01 Negin Hayatbini , Kuo-lin Hsu , Soroosh Sorooshian , Yunji Zhang , Fuqing Zhang

In natural images, object skeletons are used to represent geometric shapes. However, even slight variations in pose or movement can cause noticeable changes in skeleton structure, increasing the difficulty of detecting the skeleton and…

Computer Vision and Pattern Recognition · Computer Science 2026-04-23 Daoyong Fu , Xiang Zhang , Zhaohuan Zhan , Fan Yang , Ke Yang

Reformulating computer vision problems over Riemannian manifolds has demonstrated superior performance in various computer vision applications. This is because visual data often forms a special structure lying on a lower dimensional space…

Computer Vision and Pattern Recognition · Computer Science 2015-09-21 Kun Zhao , Azadeh Alavi , Arnold Wiliem , Brian C. Lovell

This paper presents an automated machine learning framework designed to assist hydrologists in detecting anomalies in time series data generated by sensors in a research watershed in the northeastern United States critical zone. The…

Machine Learning · Computer Science 2023-12-07 Ijaz Ul Haq , Byung Suk Lee , Donna M. Rizzo , Julia N Perdrial

Reliable river flow forecasting is an essential component of flood risk management and early warning systems. It enables improved emergency response coordination and is critical for protecting infrastructure, communities, and ecosystems…

Signal Processing · Electrical Eng. & Systems 2026-01-15 Gabriele Bertoli , Kai Schroeter , Rossella Arcucci , Enrica Caporali

Ageing structures require periodic inspections to identify structural defects. Previous work has used geometric distortions to locate cracks in synthetic masonry bridge point clouds but has struggled to detect small cracks. To address this…

Computer Vision and Pattern Recognition · Computer Science 2025-09-04 Yixiong Jing , Wei Lin , Brian Sheil , Sinan Acikgoz

Anomaly detecting as an important technical in cloud computing is applied to support smooth running of the cloud platform. Traditional detecting methods based on statistic, analysis, etc. lead to the high false-alarm rate due to…

Machine Learning · Computer Science 2019-01-29 Jing Zhang

Semantic scene understanding from point clouds is particularly challenging as the points reflect only a sparse set of the underlying 3D geometry. Previous works often convert point cloud into regular grids (e.g. voxels or bird-eye view…

Computer Vision and Pattern Recognition · Computer Science 2020-12-01 Yinyu Nie , Ji Hou , Xiaoguang Han , Matthias Nießner

Structural crack detection is a critical task for public safety as it helps in preventing potential structural failures that could endanger lives. Manual detection by inexperienced personnel can be slow, inconsistent, and prone to human…

Computer Vision and Pattern Recognition · Computer Science 2025-07-04 Subhasis Dasgupta , Jaydip Sen , Tuhina Halder

Law-enforcement investigations aimed at preventing attacks by violent extremists have become increasingly important for public safety. The problem is exacerbated by the massive data volumes that need to be scanned to identify complex…

Social and Information Networks · Computer Science 2023-10-31 Shashika R. Muramudalige , Benjamin W. K. Hung , Rosanne Libretti , Jytte Klausen , Anura P. Jayasumana

Machine learning for point clouds has been attracting much attention, with many applications in various fields, such as shape recognition and material science. For enhancing the accuracy of such machine learning methods, it is often…

Machine Learning · Computer Science 2023-12-29 Naoki Nishikawa , Yuichi Ike , Kenji Yamanishi

Point cloud processing as a fundamental task in the field of geomatics and computer vision, has been supporting tasks and applications at different scales from air to ground, including mapping, environmental monitoring, urban/tree structure…

Computer Vision and Pattern Recognition · Computer Science 2025-09-17 Zhenxin Zhang , Zhihua Xu , Yuwei Cao , Ningli Xu , Shuye Wang , Shen'ao Cui , Zhen Li , Rongjun Qin

LiDAR point clouds contain measurements of complicated natural scenes and can be used to update digital elevation models, glacial monitoring, detecting faults and measuring uplift detecting, forest inventory, detect shoreline and beach…

Computer Vision and Pattern Recognition · Computer Science 2021-01-26 F. Patricia Medina , Randy Paffenroth

Characteristics and way of behavior of attacks and infiltrators on computer networks are usually very difficult and need an expert In addition; the advancement of computer networks, the number of attacks and infiltrations are also…

Cryptography and Security · Computer Science 2020-04-20 Amir Javadpour , Sanaz Kazemi Abharian , Guojun Wang

Effective point cloud processing is crucial to LiDARbased autonomous driving systems. The capability to understand features at multiple scales is required for object detection of intelligent vehicles, where road users may appear in…

Computer Vision and Pattern Recognition · Computer Science 2024-09-10 Weihao Lu , Dezong Zhao , Cristiano Premebida , Li Zhang , Wenjing Zhao , Daxin Tian

Current point cloud processing algorithms do not have the capability to automatically extract semantic information from the observed scenes, except in very specialized cases. Furthermore, existing mesh analysis paradigms cannot be directly…

Computational Geometry · Computer Science 2018-10-26 Reed M. Williams , Horea T. Ilieş

LiDAR point clouds have become the most common data source in autonomous driving. However, due to the sparsity of point clouds, accurate and reliable detection cannot be achieved in specific scenarios. Because of their complementarity with…

Computer Vision and Pattern Recognition · Computer Science 2024-01-23 Leichao Cui , Xiuxian Li , Min Meng , Xiaoyu Mo

Disaster mapping is a critical task that often requires on-site experts and is time-consuming. To address this, a comprehensive framework is presented for fast and accurate recognition of disasters using machine learning, termed…

Computer Vision and Pattern Recognition · Computer Science 2023-06-19 Qingsong Xu , Yilei Shi , Xiao Xiang Zhu

An accurate and rapid-response perception system is fundamental for autonomous vehicles to operate safely. 3D object detection methods handle point clouds given by LiDAR sensors to provide accurate depth and position information for each…

Robotics · Computer Science 2020-08-04 Guidong Yang , Simone Mentasti , Mattia Bersani , Yafei Wang , Francesco Braghin , Federico Cheli

The aging population is growing rapidly, and so is the danger of falls in older adults. A major cause of injury is falling, and detection in time can greatly save medical expenses and recovery time. However, to provide timely intervention…

Computer Vision and Pattern Recognition · Computer Science 2025-07-15 Seyed Alireza Rahimi Azghadi , Truong-Thanh-Hung Nguyen , Helene Fournier , Monica Wachowicz , Rene Richard , Francis Palma , Hung Cao