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In marine surveillance, distinguishing between normal and anomalous vessel movement patterns is critical for identifying potential threats in a timely manner. Once detected, it is important to monitor and track these vessels until a…

Machine Learning · Computer Science 2023-06-08 Md Asif Bin Syed , Imtiaz Ahmed

Skeleton-based Temporal Action Segmentation (STAS) aims to segment and recognize various actions from long, untrimmed sequences of human skeletal movements. Current STAS methods typically employ spatio-temporal modeling to establish…

Computer Vision and Pattern Recognition · Computer Science 2025-12-15 Haoyu Ji , Bowen Chen , Weihong Ren , Wenze Huang , Zhihao Yang , Zhiyong Wang , Honghai Liu

We present a 3D Convolutional Neural Networks (CNNs) based single shot detector for spatial-temporal action detection tasks. Our model includes: (1) two short-term appearance and motion streams, with single RGB and optical flow image input…

Computer Vision and Pattern Recognition · Computer Science 2019-08-23 Pengfei Zhang , Yu Cao , Benyuan Liu

Benefiting from its succinctness and robustness, skeleton-based action recognition has recently attracted much attention. Most existing methods utilize local networks (e.g., recurrent, convolutional, and graph convolutional networks) to…

Computer Vision and Pattern Recognition · Computer Science 2019-06-13 Guyue Hu , Bo Cui , Shan Yu

Two-stream convolutional networks have shown strong performance in video action recognition tasks. The key idea is to learn spatiotemporal features by fusing convolutional networks spatially and temporally. However, it remains unclear how…

Computer Vision and Pattern Recognition · Computer Science 2019-03-05 Yunbo Wang , Mingsheng Long , Jianmin Wang , Philip S. Yu

Human activity recognition (HAR) refers to the process of identifying human actions and activities using data collected from sensors. Neural networks, such as convolutional neural networks (CNNs), long short-term memory (LSTM) networks,…

Computer Vision and Pattern Recognition · Computer Science 2026-04-21 Abeer FathAllah Brery , Ascensión Gallardo-Antolín , Israel Gonzalez-Carrasco , Mahmoud Fakhry

First-person interaction recognition is a challenging task because of unstable video conditions resulting from the camera wearer's movement. For human interaction recognition from a first-person viewpoint, this paper proposes a three-stream…

Computer Vision and Pattern Recognition · Computer Science 2020-02-20 Ye-Ji Kim , Dong-Gyu Lee , Seong-Whan Lee

A challenge of skeleton-based action recognition is the difficulty to classify actions with similar motions and object-related actions. Visual clues from other streams help in that regard. RGB data are sensible to illumination conditions,…

Computer Vision and Pattern Recognition · Computer Science 2021-01-25 Alban Main de Boissiere , Rita Noumeir

Human action recognition is one of the challenging tasks in computer vision. The current action recognition methods use computationally expensive models for learning spatio-temporal dependencies of the action. Models utilizing RGB channels…

Computer Vision and Pattern Recognition · Computer Science 2022-06-07 Labina Shrestha , Shikha Dubey , Farrukh Olimov , Muhammad Aasim Rafique , Moongu Jeon

Human Activity Recognition (HAR) using deep neural network has become a hot topic in human-computer interaction. Machine can effectively identify human naturalistic activities by learning from a large collection of sensor data. Activity…

Computer Vision and Pattern Recognition · Computer Science 2019-06-12 Jun Long , WuQing Sun , Zhan Yang , Osolo Ian Raymond

Skeleton based recognition systems are gaining popularity and machine learning models focusing on points or joints in a skeleton have proved to be computationally effective and application in many areas like Robotics. It is easy to track…

Computer Vision and Pattern Recognition · Computer Science 2022-07-04 Neha Baranwal , Varun Sharma

Recurrent Neural Networks (RNNs) have been widely used in natural language processing and computer vision. Among them, the Hierarchical Multi-scale RNN (HM-RNN), a kind of multi-scale hierarchical RNN proposed recently, can learn the…

Computer Vision and Pattern Recognition · Computer Science 2017-08-29 Shiyang Yan , Jeremy S. Smith , Wenjin Lu , Bailing Zhang

There exist a wide range of intra class variations of the same actions and inter class similarity among the actions, at the same time, which makes the action recognition in videos very challenging. In this paper, we present a novel…

Computer Vision and Pattern Recognition · Computer Science 2019-12-03 Chhavi Dhiman , Dinesh Kumar Vishwakarma , Paras Aggarwal

Lane detection is a crucial perception task for all levels of automated vehicles (AVs) and Advanced Driver Assistance Systems, particularly in mixed-traffic environments where AVs must interact with human-driven vehicles (HDVs) and…

Computer Vision and Pattern Recognition · Computer Science 2026-02-04 Sandeep Patil , Yongqi Dong , Haneen Farah , Hans Hellendoorn

We propose a novel few-shot action recognition framework, STRM, which enhances class-specific feature discriminability while simultaneously learning higher-order temporal representations. The focus of our approach is a novel spatio-temporal…

Computer Vision and Pattern Recognition · Computer Science 2022-04-06 Anirudh Thatipelli , Sanath Narayan , Salman Khan , Rao Muhammad Anwer , Fahad Shahbaz Khan , Bernard Ghanem

We propose SLARM, a feed-forward model that unifies dynamic scene reconstruction, semantic understanding, and real-time streaming inference. SLARM captures complex, non-uniform motion through higher-order motion modeling, trained solely on…

Computer Vision and Pattern Recognition · Computer Science 2026-03-27 Zhicheng Qiu , Jiarui Meng , Tong-an Luo , Yican Huang , Xuan Feng , Xuanfu Li , ZHan Xu

Recent progress on action recognition has mainly focused on RGB and optical flow features. In this paper, we approach the problem of joint-based action recognition. Unlike other modalities, constellation of joints and their motion generate…

Computer Vision and Pattern Recognition · Computer Science 2021-11-02 Anshul Shah , Shlok Mishra , Ankan Bansal , Jun-Cheng Chen , Rama Chellappa , Abhinav Shrivastava

Predicting an interaction before it is fully executed is very important in applications such as human-robot interaction and video surveillance. In a two-human interaction scenario, there often contextual dependency structure between the…

Computer Vision and Pattern Recognition · Computer Science 2018-06-13 Qiuhong Ke , Mohammed Bennamoun , Senjian An , Farid Bossaid , Ferdous Sohel

The data-driven approach that learns an optimal representation of vision features like skeleton frames or RGB videos is currently a dominant paradigm for activity recognition. While great improvements have been achieved from existing single…

Computer Vision and Pattern Recognition · Computer Science 2020-04-30 Bruce X. B. Yu , Yan Liu , Keith C. C. Chan

Self-supervised learning has demonstrated remarkable capability in representation learning for skeleton-based action recognition. Existing methods mainly focus on applying global data augmentation to generate different views of the skeleton…

Computer Vision and Pattern Recognition · Computer Science 2023-10-13 Yujie Zhou , Haodong Duan , Anyi Rao , Bing Su , Jiaqi Wang