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This paper presents a new method to describe spatio-temporal relations between objects and hands, to recognize both interactions and activities within video demonstrations of manual tasks. The approach exploits Scene Graphs to extract key…

Computer Vision and Pattern Recognition · Computer Science 2023-07-10 Elena Merlo , Marta Lagomarsino , Edoardo Lamon , Arash Ajoudani

Numerous powerful point process models have been developed to understand temporal patterns in sequential data from fields such as health-care, electronic commerce, social networks, and natural disaster forecasting. In this paper, we develop…

Computer Vision and Pattern Recognition · Computer Science 2018-08-15 Yatao Zhong , Bicheng Xu , Guang-Tong Zhou , Luke Bornn , Greg Mori

This paper addresses spatio-temporal localization of human actions in video. In order to localize actions in time, we propose a recurrent localization network (RecLNet) designed to model the temporal structure of actions on the level of…

Computer Vision and Pattern Recognition · Computer Science 2018-06-29 Guilhem Chéron , Anton Osokin , Ivan Laptev , Cordelia Schmid

This paper presents a review of human activity recognition and behaviour understanding in video sequence. The key objective of this paper is to provide a general review on the overall process of a surveillance system used in the current…

Computer Vision and Pattern Recognition · Computer Science 2012-07-31 A. R. Revathi , Dhananjay Kumar

We propose an approach for forecasting video of complex human activity involving multiple people. Direct pixel-level prediction is too simple to handle the appearance variability in complex activities. Hence, we develop novel intermediate…

Computer Vision and Pattern Recognition · Computer Science 2017-12-07 Mengyao Zhai , Jiacheng Chen , Ruizhi Deng , Lei Chen , Ligeng Zhu , Greg Mori

The goal of human action recognition is to temporally or spatially localize the human action of interest in video sequences. Temporal localization (i.e. indicating the start and end frames of the action in a video) is referred to as…

Computer Vision and Pattern Recognition · Computer Science 2020-04-24 Waqas Sultani , Qazi Ammar Arshad , Chen Chen

The recurrent neural network and its variants have shown great success in processing sequences in recent years. However, this deep neural network has not aroused much attention in anomaly detection through predictively process monitoring.…

Machine Learning · Computer Science 2023-09-06 Jiaqi Qiu , Yu Lin , Inez Zwetsloot

This paper focuses on task recognition and action segmentation in weakly-labeled instructional videos, where only the ordered sequence of video-level actions is available during training. We propose a two-stream framework, which exploits…

Computer Vision and Pattern Recognition · Computer Science 2021-10-13 Reza Ghoddoosian , Saif Sayed , Vassilis Athitsos

Visual-based human action recognition can be found in various application fields, e.g., surveillance systems, sports analytics, medical assistive technologies, or human-robot interaction frameworks, and it concerns the identification and…

Computer Vision and Pattern Recognition · Computer Science 2024-12-23 Antonios Gasteratos , Stavros N. Moutsis , Konstantinos A. Tsintotas , Yiannis Aloimonos

Despite great success has been achieved in activity analysis, it still has many challenges. Most existing work in activity recognition pay more attention to design efficient architecture or video sampling strategy. However, due to the…

Computer Vision and Pattern Recognition · Computer Science 2019-08-28 Jingran Zhang , Fumin Shen , Xing Xu , Heng Tao Shen

This paper introduces a novel method for real-time exercise classification using a Bidirectional Long Short-Term Memory (BiLSTM) neural network. Existing exercise recognition approaches often rely on synthetic datasets, raw coordinate…

Computer Vision and Pattern Recognition · Computer Science 2024-11-19 Riccardo Riccio

Visual tempo characterizes the dynamics and the temporal scale of an action. Modeling such visual tempos of different actions facilitates their recognition. Previous works often capture the visual tempo through sampling raw videos at…

Computer Vision and Pattern Recognition · Computer Science 2020-06-16 Ceyuan Yang , Yinghao Xu , Jianping Shi , Bo Dai , Bolei Zhou

Action completion detection is the problem of modelling the action's progression towards localising the moment of completion - when the action's goal is confidently considered achieved. In this work, we assess the ability of two temporal…

Computer Vision and Pattern Recognition · Computer Science 2017-10-09 Farnoosh Heidarivincheh , Majid Mirmehdi , Dima Damen

In this paper we introduce the problem of Visual Semantic Role Labeling: given an image we want to detect people doing actions and localize the objects of interaction. Classical approaches to action recognition either study the task of…

Computer Vision and Pattern Recognition · Computer Science 2015-05-19 Saurabh Gupta , Jitendra Malik

In this paper, we investigate a weakly-supervised object detection framework. Most existing frameworks focus on using static images to learn object detectors. However, these detectors often fail to generalize to videos because of the…

Computer Vision and Pattern Recognition · Computer Science 2017-08-03 Yuan Yuan , Xiaodan Liang , Xiaolong Wang , Dit-Yan Yeung , Abhinav Gupta

The goal of fine-grained action recognition is to successfully discriminate between action categories with subtle differences. To tackle this, we derive inspiration from the human visual system which contains specialized regions in the…

Computer Vision and Pattern Recognition · Computer Science 2022-09-07 Tianjiao Li , Lin Geng Foo , Qiuhong Ke , Hossein Rahmani , Anran Wang , Jinghua Wang , Jun Liu

In this paper, we address the challenging problem of spatial and temporal action detection in videos. We first develop an effective approach to localize frame-level action regions through integrating static and kinematic information by the…

Computer Vision and Pattern Recognition · Computer Science 2018-11-30 Yuancheng Ye , Xiaodong Yang , Yingli Tian

This paper strives to recognize individual actions and group activities from videos. While existing solutions for this challenging problem explicitly model spatial and temporal relationships based on location of individual actors, we…

Computer Vision and Pattern Recognition · Computer Science 2020-03-31 Kirill Gavrilyuk , Ryan Sanford , Mehrsan Javan , Cees G. M. Snoek

In the analysis of remote healthcare monitoring data, time series representation learning offers substantial value in uncovering deeper patterns of patient behavior, especially given the fine temporal granularity of the data. In this study,…

Artificial Intelligence · Computer Science 2025-02-17 Jin Cui , Alexander Capstick , Payam Barnaghi , Gregory Scott

Temporal action segmentation (TAS) in videos aims at densely identifying video frames in minutes-long videos with multiple action classes. As a long-range video understanding task, researchers have developed an extended collection of…

Computer Vision and Pattern Recognition · Computer Science 2023-10-24 Guodong Ding , Fadime Sener , Angela Yao