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In this paper, we propose a new approach to under-stand actions in egocentric videos that exploits the semantics of object interactions at both frame and temporal levels. At the frame level, we use a region-based approach that takes as…

Computer Vision and Pattern Recognition · Computer Science 2021-04-26 Alejandro Cartas , Petia Radeva , Mariella Dimiccoli

Designing a scheme that can achieve a good performance in predicting single person activities and group activities is a challenging task. In this paper, we propose a novel robust and efficient human activity recognition scheme called ReHAR,…

Computer Vision and Pattern Recognition · Computer Science 2018-02-28 Xin Li , Mooi Choo Chuah

This work is about recognizing human activities occurring in videos at distinct semantic levels, including individual actions, interactions, and group activities. The recognition is realized using a two-level hierarchy of Long Short-Term…

Computer Vision and Pattern Recognition · Computer Science 2017-04-12 Tianmin Shu , Sinisa Todorovic , Song-Chun Zhu

Human action recognition is an important task in computer vision. Extracting discriminative spatial and temporal features to model the spatial and temporal evolutions of different actions plays a key role in accomplishing this task. In this…

Computer Vision and Pattern Recognition · Computer Science 2016-11-21 Sijie Song , Cuiling Lan , Junliang Xing , Wenjun Zeng , Jiaying Liu

The problem of human activity recognition is central for understanding and predicting the human behavior, in particular in a prospective of assistive services to humans, such as health monitoring, well being, security, etc. There is…

Machine Learning · Statistics 2013-12-30 Faicel Chamroukhi , Samer Mohammed , Dorra Trabelsi , Latifa Oukhellou , Yacine Amirat

With the increasing availability and affordability of personal robots, they will no longer be confined to large corporate warehouses or factories but will instead be expected to operate in less controlled environments alongside larger…

Robotics · Computer Science 2023-08-08 Rashmi Bhaskara , Maurice Chiu , Aniket Bera

In this paper, we newly introduce the concept of temporal attention filters, and describe how they can be used for human activity recognition from videos. Many high-level activities are often composed of multiple temporal parts (e.g.,…

Computer Vision and Pattern Recognition · Computer Science 2016-12-28 AJ Piergiovanni , Chenyou Fan , Michael S. Ryoo

The Long Short-Term Memory (LSTM) recurrent neural network is capable of processing complex sequential information since it utilizes special gating schemes for learning representations from long input sequences. It has the potential to…

Computer Vision and Pattern Recognition · Computer Science 2019-05-14 Naifan Zhuang , Guo-Jun Qi , The Duc Kieu , Kien A. Hua

Spatial and temporal relationships, both short-range and long-range, between objects in videos, are key cues for recognizing actions. It is a challenging problem to model them jointly. In this paper, we first present a new variant of Long…

Computer Vision and Pattern Recognition · Computer Science 2020-04-28 Zexi Chen , Bharathkumar Ramachandra , Tianfu Wu , Ranga Raju Vatsavai

Predictive business process monitoring methods exploit logs of completed cases of a process in order to make predictions about running cases thereof. Existing methods in this space are tailor-made for specific prediction tasks. Moreover,…

Applications · Statistics 2017-12-20 Niek Tax , Ilya Verenich , Marcello La Rosa , Marlon Dumas

This paper reports on a data-driven, interaction-aware motion prediction approach for pedestrians in environments cluttered with static obstacles. When navigating in such workspaces shared with humans, robots need accurate motion…

Robotics · Computer Science 2018-02-27 Mark Pfeiffer , Giuseppe Paolo , Hannes Sommer , Juan Nieto , Roland Siegwart , Cesar Cadena

This study presents a novel method to recognize human physical activities using CNN followed by LSTM. Achieving high accuracy by traditional machine learning algorithms, (such as SVM, KNN and random forest method) is a challenging task…

Signal Processing · Electrical Eng. & Systems 2020-03-16 Waqar Ahmad , Misbah Kazmi , Hazrat Ali

Group activity recognition aims to understand the activity performed by a group of people. In order to solve it, modeling complex spatio-temporal interactions is the key. Previous methods are limited in reasoning on a predefined graph,…

Computer Vision and Pattern Recognition · Computer Science 2021-08-27 Hangjie Yuan , Dong Ni , Mang Wang

Human activity recognition (HAR) has become a popular topic in research because of its wide application. With the development of deep learning, new ideas have appeared to address HAR problems. Here, a deep network architecture using…

Computer Vision and Pattern Recognition · Computer Science 2017-09-08 Yu Zhao , Rennong Yang , Guillaume Chevalier , Maoguo Gong

This paper presents a novel approach for automatic recognition of group activities for video surveillance applications. We propose to use a group representative to handle the recognition with a varying number of group members, and use an…

Computer Vision and Pattern Recognition · Computer Science 2015-03-03 Weiyao Lin , Ming-Ting Sun , Radha Poovendran , Zhengyou Zhang

In this paper, we present Gamma-LSTM, an enhanced long short term memory (LSTM) unit, to enable learning of hierarchical representations through multiple stages of temporal abstractions. Gamma memory, a hierarchical memory unit, forms the…

Machine Learning · Computer Science 2019-10-29 Sneha Aenugu

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

In this paper, we propose a novel approach to predict group activities given the beginning frames with incomplete activity executions. Existing action prediction approaches learn to enhance the representation power of the partial…

Computer Vision and Pattern Recognition · Computer Science 2020-08-07 Junwen Chen , Wentao Bao , Yu Kong

Group activity recognition is a crucial yet challenging problem, whose core lies in fully exploring spatial-temporal interactions among individuals and generating reasonable group representations. However, previous methods either model…

Computer Vision and Pattern Recognition · Computer Science 2021-08-31 Shuaicheng Li , Qianggang Cao , Lingbo Liu , Kunlin Yang , Shinan Liu , Jun Hou , Shuai Yi

Inspired by recent advances in neural machine translation, that jointly align and translate using encoder-decoder networks equipped with attention, we propose an attentionbased LSTM model for human activity recognition. Our model jointly…

Computer Vision and Pattern Recognition · Computer Science 2017-09-01 Atousa Torabi , Leonid Sigal