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Automatic crowd counting using density estimation has gained significant attention in computer vision research. As a result, a large number of crowd counting and density estimation models using convolution neural networks (CNN) have been…

Computer Vision and Pattern Recognition · Computer Science 2023-02-13 Muhammad Asif Khan , Hamid Menouar , Ridha Hamila

Human body actions are an important form of non-verbal communication in social interactions. This paper specifically focuses on a subset of body actions known as micro-actions, which are subtle, low-intensity body movements with promising…

Computer Vision and Pattern Recognition · Computer Science 2025-08-21 Kun Li , Pengyu Liu , Dan Guo , Fei Wang , Zhiliang Wu , Hehe Fan , Meng Wang

Action recognition has received increasing attention from the computer vision and machine learning communities in the last decade. To enable the study of this problem, there exist a vast number of action datasets, which are recorded under…

Computer Vision and Pattern Recognition · Computer Science 2017-05-08 Wenhui Li , Yongkang Wong , An-An Liu , Yang Li , Yu-Ting Su , Mohan Kankanhalli

Human activity recognition (HAR) is fundamental in human-robot collaboration (HRC), enabling robots to respond to and dynamically adapt to human intentions. This paper introduces a HAR system combining a modular data glove equipped with…

The temporal action segmentation task segments videos temporally and predicts action labels for all frames. Fully supervising such a segmentation model requires dense frame-wise action annotations, which are expensive and tedious to…

Computer Vision and Pattern Recognition · Computer Science 2022-12-20 Guodong Ding , Angela Yao

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 Activity Recognition (HAR) using on-body devices identifies specific human actions in unconstrained environments. HAR is challenging due to the inter and intra-variance of human movements; moreover, annotated datasets from on-body…

Computer Vision and Pattern Recognition · Computer Science 2022-12-05 Shrutarv Awasthi , Fernando Moya Rueda , Gernot A. Fink

Video action detection (spatio-temporal action localization) is usually the starting point for human-centric intelligent analysis of videos nowadays. It has high practical impacts for many applications across robotics, security, healthcare,…

Computer Vision and Pattern Recognition · Computer Science 2022-11-01 Xin Hu , Zhenyu Wu , Hao-Yu Miao , Siqi Fan , Taiyu Long , Zhenyu Hu , Pengcheng Pi , Yi Wu , Zhou Ren , Zhangyang Wang , Gang Hua

Multi-object tracking (MOT) has been dominated by the use of track by detection approaches due to the success of convolutional neural networks (CNNs) on detection in the last decade. As the datasets and bench-marking sites are published,…

Computer Vision and Pattern Recognition · Computer Science 2022-08-05 Fatih Emre Simsek , Cevahir Cigla , Koray Kayabol

Linking human motion and natural language is of great interest for the generation of semantic representations of human activities as well as for the generation of robot activities based on natural language input. However, while there have…

Robotics · Computer Science 2018-08-10 Matthias Plappert , Christian Mandery , Tamim Asfour

We introduce WebChain, the largest open-source dataset of human-annotated trajectories on real-world websites, designed to accelerate reproducible research in web agents. It contains 31,725 trajectories and 318k steps, featuring a core…

Artificial Intelligence · Computer Science 2026-04-15 Sicheng Fan , Rui Wan , Yifei Leng , Gaoning Liang , Li Ling , Yanyi Shang , Dehan Kong

We propose a novel computational method to extract information about interactions among individuals with different behavioral states in a biological collective from ordinary video recordings. Assuming that individuals are acting as finite…

Multiagent Systems · Computer Science 2017-10-03 Hiroki Sayama , Farnaz Zamani Esfahlani , Ali Jazayeri , J. Scott Turner

We consider the task of temporal human action localization in lifestyle vlogs. We introduce a novel dataset consisting of manual annotations of temporal localization for 13,000 narrated actions in 1,200 video clips. We present an extensive…

Computer Vision and Pattern Recognition · Computer Science 2022-02-22 Oana Ignat , Santiago Castro , Yuhang Zhou , Jiajun Bao , Dandan Shan , Rada Mihalcea

For human action understanding, a popular research direction is to analyze short video clips with unambiguous semantic content, such as jumping and drinking. However, methods for understanding short semantic actions cannot be directly…

Computer Vision and Pattern Recognition · Computer Science 2021-11-23 Kenneth Li , Xiao Sun , Zhirong Wu , Fangyun Wei , Stephen Lin

The research on human activity recognition has provided novel solutions to many applications like healthcare, sports, and user profiling. Considering the complex nature of human activities, it is still challenging even after effective and…

Human-Computer Interaction · Computer Science 2023-07-11 Ranjit Kolkar , Geetha V

Object grasping is critical for many applications, which is also a challenging computer vision problem. However, for the clustered scene, current researches suffer from the problems of insufficient training data and the lacking of…

Computer Vision and Pattern Recognition · Computer Science 2020-01-03 Hao-Shu Fang , Chenxi Wang , Minghao Gou , Cewu Lu

Different from traditional action recognition based on video segments, online action recognition aims to recognize actions from unsegmented streams of data in a continuous manner. One way for online recognition is based on the evidence…

Computer Vision and Pattern Recognition · Computer Science 2017-07-07 Chang Tang , Pichao Wang , Wanqing Li

Human Activity Recognition (HAR) systems aim to understand human behaviour and assign a label to each action, attracting significant attention in computer vision due to their wide range of applications. HAR can leverage various data…

Computer Vision and Pattern Recognition · Computer Science 2024-09-17 Jungpil Shin , Najmul Hassan , Abu Saleh Musa Miah1 , Satoshi Nishimura

Understanding human actions is a crucial problem for service robots. However, the general trend in Action Recognition is developing and testing these systems on structured datasets. That's why this work presents a practical Skeleton-based…

Robotics · Computer Science 2019-05-15 Cagatay Odabasi , Jewel Jose

In Actor and Observer we introduced a dataset linking the first and third-person video understanding domains, the Charades-Ego Dataset. In this paper we describe the egocentric aspect of the dataset and present annotations for Charades-Ego…

Computer Vision and Pattern Recognition · Computer Science 2018-05-01 Gunnar A. Sigurdsson , Abhinav Gupta , Cordelia Schmid , Ali Farhadi , Karteek Alahari