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Video anomaly detection deals with the recognition of abnormal events in videos. Apart from the visual signal, video anomaly detection has also been addressed with the use of skeleton sequences. We propose a holistic representation of…

Computer Vision and Pattern Recognition · Computer Science 2023-11-06 Alexandros Stergiou , Brent De Weerdt , Nikos Deligiannis

Vertebral body compression fractures are early signs of osteoporosis. Though these fractures are visible on Computed Tomography (CT) images, they are frequently missed by radiologists in clinical settings. Prior research on automatic…

Image and Video Processing · Electrical Eng. & Systems 2022-10-04 Alexey Zakharov , Maxim Pisov , Alim Bukharaev , Alexey Petraikin , Sergey Morozov , Victor Gombolevskiy , Mikhail Belyaev

Topological data analysis (TDA) provides a set of data analysis tools for extracting embedded topological structures from complex high-dimensional datasets. In recent years, TDA has been a rapidly growing field which has found success in a…

Methodology · Statistics 2022-03-09 Xiaojun Zheng , Simon Mak , Liyan Xie , Yao Xie

One-shot skeleton action recognition, which aims to learn a skeleton action recognition model with a single training sample, has attracted increasing interest due to the challenge of collecting and annotating large-scale skeleton action…

Computer Vision and Pattern Recognition · Computer Science 2024-02-07 Siyuan Yang , Jun Liu , Shijian Lu , Er Meng Hwa , Alex C. Kot

Skeleton-based Human Activity Recognition has achieved great interest in recent years as skeleton data has demonstrated being robust to illumination changes, body scales, dynamic camera views, and complex background. In particular,…

Computer Vision and Pattern Recognition · Computer Science 2021-06-23 Chiara Plizzari , Marco Cannici , Matteo Matteucci

In robotic surgery, task automation and learning from demonstration combined with human supervision is an emerging trend for many new surgical robot platforms. One such task is automated anastomosis, which requires bimanual needle handling…

Computer Vision and Pattern Recognition · Computer Science 2017-11-10 Yang Hu , Yun Gu , Jie Yang , Guang-Zhong Yang

As human-machine interaction continues to evolve, the capacity for environmental perception is becoming increasingly crucial. Integrating the two most common types of sensory data, images, and point clouds, can enhance detection accuracy.…

Computer Vision and Pattern Recognition · Computer Science 2024-08-12 Kai Luo , Hao Wu , Kefu Yi , Kailun Yang , Wei Hao , Rongdong Hu

Gait recognition aims to identify a person based on their walking sequences, serving as a useful biometric modality as it can be observed from long distances without requiring cooperation from the subject. In representing a person's walking…

Computer Vision and Pattern Recognition · Computer Science 2024-04-04 Wanrong Zheng , Haidong Zhu , Zhaoheng Zheng , Ram Nevatia

Topological alignments and snakes are used in image processing, particularly in locating object boundaries. Both of them have their own advantages and limitations. To improve the overall image boundary detection system, we focused on…

Computer Vision and Pattern Recognition · Computer Science 2011-06-03 Ashraf A. Aly , Safaai Bin Deris , Nazar Zaki

Detecting impact where an individual makes contact with the ground within a fall event is crucial in fall detection systems, particularly for elderly care where prompt intervention can prevent serious injuries. The UP-Fall dataset, a key…

Computer Vision and Pattern Recognition · Computer Science 2025-02-27 Tresor Y. Koffi , Youssef Mourchid , Mohammed Hindawi , Yohan Dupuis

Topology-imbalance is a graph-specific imbalance problem caused by the uneven topology positions of labeled nodes, which significantly damages the performance of GNNs. What topology-imbalance means and how to measure its impact on graph…

Machine Learning · Computer Science 2022-08-18 Qingyun Sun , Jianxin Li , Haonan Yuan , Xingcheng Fu , Hao Peng , Cheng Ji , Qian Li , Philip S. Yu

This paper proposes a new framework for low-light image enhancement by simultaneously conducting the appearance as well as structure modeling. It employs the structural feature to guide the appearance enhancement, leading to sharp and…

Computer Vision and Pattern Recognition · Computer Science 2023-05-11 Xiaogang Xu , Ruixing Wang , Jiangbo Lu

Designing strong and robust bio-inspired structures requires an understanding of how function arises from the architecture and geometry of materials found in nature. We draw from trabecular bone, a lightweight bone tissue that exhibits a…

Biological Physics · Physics 2019-10-09 Chantal Nguyen , Darin Peetz , Ahmed E. Elbanna , Jean M. Carlson

Skeleton-based action recognition has achieved remarkable performance with the development of graph convolutional networks (GCNs). However, most of these methods tend to construct complex topology learning mechanisms while neglecting the…

Computer Vision and Pattern Recognition · Computer Science 2024-11-21 Zeyu Liang , Hailun Xia , Naichuan Zheng , Huan Xu

The unsteady motion of a gas-liquid interface, such as during splashing or atomization, often results in complex liquid structures embedded in the ambient fluid. Here we explore the use of skeletonization to identify the minimum amount of…

Fluid Dynamics · Physics 2022-09-28 Xianyang Chen , Jiacai Lu , Stéphane Zaleski , Grétar Tryggvason

Pedestrian intention recognition is very important to develop robust and safe autonomous driving (AD) and advanced driver assistance systems (ADAS) functionalities for urban driving. In this work, we develop an end-to-end pedestrian…

Motion planning algorithms often leverage topological information about the environment to improve planner performance. However, these methods often focus only on the environment's connectivity while ignoring other properties such as…

Robotics · Computer Science 2020-03-05 Diane Uwacu , Regina Rex , Bonnie Wang , Shawna Thomas , Nancy M. Amato

Detection of surface defects is one of the most important issues in the field of image processing and machine vision. In this article, a method for detecting surface defects based on energy changes in co-occurrence matrices is presented.…

Computer Vision and Pattern Recognition · Computer Science 2022-10-17 Nandara K. Krishnand , Akshakhi Kumar Pritoonka , Faeze Kiani

Detecting aligned 3D keypoints is essential under many scenarios such as object tracking, shape retrieval and robotics. However, it is generally hard to prepare a high-quality dataset for all types of objects due to the ambiguity of…

Computer Vision and Pattern Recognition · Computer Science 2021-03-22 Ruoxi Shi , Zhengrong Xue , Yang You , Cewu Lu

A more realistic object detection paradigm, Open-World Object Detection, has arisen increasing research interests in the community recently. A qualified open-world object detector can not only identify objects of known categories, but also…

Computer Vision and Pattern Recognition · Computer Science 2022-02-17 Shuo Yang , Peize Sun , Yi Jiang , Xiaobo Xia , Ruiheng Zhang , Zehuan Yuan , Changhu Wang , Ping Luo , Min Xu
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