Multi-user activity recognition: Challenges and opportunities

Q Li, R Gravina, Y Li, SH Alsamhi, F Sun, G Fortino - Information Fusion, 2020‏ - Elsevier
Human activity recognition has attracted enormous research interest thanks to its
fundamental importance in several domains spanning from health-care to security, safety …

A comprehensive review of group activity recognition in videos

LF Wu, Q Wang, M Jian, Y Qiao, BX Zhao - International Journal of …, 2021‏ - Springer
Human group activity recognition (GAR) has attracted significant attention from computer
vision researchers due to its wide practical applications in security surveillance, social role …

[PDF][PDF] Social interaction discovery by statistical analysis of f-formations.

M Cristani, L Bazzani, G Paggetti, A Fossati, D Tosato… - BMVC, 2011‏ - academia.edu
We present a novel approach for detecting social interactions in a crowded scene by
employing solely visual cues. The detection of social interactions in unconstrained scenarios …

Human behavior analysis in video surveillance: A social signal processing perspective

M Cristani, R Raghavendra, A Del Bue, V Murino - Neurocomputing, 2013‏ - Elsevier
The analysis of human activities is one of the most intriguing and important open issues for
the automated video surveillance community. Since few years ago, it has been handled …

COMPOSER: Compositional Reasoning of Group Activity in Videos with Keypoint-Only Modality

H Zhou, A Kadav, A Shamsian, S Geng, F Lai… - … on Computer Vision, 2022‏ - Springer
Abstract Group Activity Recognition detects the activity collectively performed by a group of
actors, which requires compositional reasoning of actors and objects. We approach the task …

Unveiling group activity recognition: Leveraging Local–Global Context-Aware Graph Reasoning for enhanced actor–scene interactions

X Jiang, L Qing, J Huang, L Guo, Y Peng - Engineering Applications of …, 2024‏ - Elsevier
Group activity recognition aims to recognize holistic activity in multi-person scene,
necessitating consideration of the interactions between actors and their surroundings. It has …

A Comprehensive Review on Group Re-identification in Surveillance Videos

K Nayak, DP Dogra - ACM Computing Surveys, 2025‏ - dl.acm.org
Computer vision plays an important role in the automated analysis of human groups. The
appearance of human groups has been studied for various reasons, including detection …

A heat-map-based algorithm for recognizing group activities in videos

W Lin, H Chu, J Wu, B Sheng… - IEEE Transactions on …, 2013‏ - ieeexplore.ieee.org
In this paper, a new heat-map-based algorithm is proposed for group activity recognition.
The proposed algorithm first models human trajectories as series of heat sources and then …

UltraSense: A non-intrusive approach for human activity identification using heterogeneous ultrasonic sensor grid for smart home environment

A Ghosh, A Chakraborty, D Chakraborty… - Journal of Ambient …, 2023‏ - Springer
Recognizing human activities non-intrusively has prevailed as a challenging and active area
of research. In real life, it is a major requirement for human-centric applications like assisted …

Group activity recognition with group interaction zone based on relative distance between human objects

NG Cho, YJ Kim, U Park, JS Park… - International Journal of …, 2015‏ - World Scientific
In this paper, we address the problem of recognizing group activities of human objects
based on their motion trajectory analysis. In order to resolve the complexity and ambiguity …