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In this paper we present an approach for classifying the activity performed by a group of people in a video sequence. This problem of group activity recognition can be addressed by examining individual person actions and their relations.…

Computer Vision and Pattern Recognition · Computer Science 2016-07-12 Mostafa S. Ibrahim , Srikanth Muralidharan , Zhiwei Deng , Arash Vahdat , Greg Mori

We propose a view-invariant method towards the assessment of the quality of human movements which does not rely on skeleton data. Our end-to-end convolutional neural network consists of two stages, where at first a view-invariant trajectory…

Computer Vision and Pattern Recognition · Computer Science 2020-08-13 Faegheh Sardari , Adeline Paiement , Sion Hannuna , Majid Mirmehdi

Wearables like smartwatches which are embedded with sensors and powerful processors, provide a strong platform for development of analytics solutions in sports domain. To analyze players' games, while motion sensor based shot detection has…

Machine Learning · Computer Science 2018-05-16 Manish Sharma , Akash Anand , Rupika Srivastava , Lakshmi Kaligounder

Training deep neural networks often requires careful hyper-parameter tuning and significant computational resources. In this paper, we propose ConvTimeNet (CTN): an off-the-shelf deep convolutional neural network (CNN) trained on diverse…

Machine Learning · Computer Science 2019-05-03 Kathan Kashiparekh , Jyoti Narwariya , Pankaj Malhotra , Lovekesh Vig , Gautam Shroff

In this study, a gait phase classification method based on SVM multiclass classification is introduced, with a focus on the precise identification of the stance and swing phases, which are further subdivided into seven phases. Data from…

Machine Learning · Computer Science 2023-10-17 Aswadh Khumar G S , Barath Kumar JK

Downsampling operators break the shift invariance of convolutional neural networks (CNNs) and this affects the robustness of features learned by CNNs when dealing with even small pixel-level shift. Through a large-scale correlation analysis…

Computer Vision and Pattern Recognition · Computer Science 2024-12-03 Sourajit Saha , Tejas Gokhale

This paper presents the baseline method proposed for the Sports Video task part of the MediaEval 2022 benchmark. This task proposes two subtasks: stroke classification from trimmed videos, and stroke detection from untrimmed videos. This…

Computer Vision and Pattern Recognition · Computer Science 2023-02-07 Pierre-Etienne Martin

Deep convolutional networks have achieved great success for image recognition. However, for action recognition in videos, their advantage over traditional methods is not so evident. We present a general and flexible video-level framework…

Computer Vision and Pattern Recognition · Computer Science 2017-05-09 Limin Wang , Yuanjun Xiong , Zhe Wang , Yu Qiao , Dahua Lin , Xiaoou Tang , Luc Van Gool

Background: Epilepsy is a neurological illness affecting the brain that makes people more likely to experience frequent, spontaneous seizures. There has to be an accurate automated method for measuring seizure frequency and severity in…

Signal Processing · Electrical Eng. & Systems 2023-05-09 Salim Rukhsar , Anil K. Tiwari

Human activity recognition is a core technology for applications such as rehabilitation, health monitoring, and human-computer interactions. Wearable devices, especially IMU sensors, provide rich features of human movements at a reasonable…

Machine Learning · Computer Science 2024-02-16 Mohammad Mohammadzadeh , Ali Ghadami , Alireza Taheri , Saeed Behzadipour

For multimodal large language models (MLLMs), visual information is relatively sparse compared with text. As a result, research on visual pruning emerges for efficient inference. Current approaches typically measure token importance based…

Computer Vision and Pattern Recognition · Computer Science 2026-04-06 Jiameng Li , Aleksei Tiulpin , Matthew B. Blaschko

Human activity recognition (HAR) is essential for effective Human-Robot Collaboration (HRC), enabling robots to interpret and respond to human actions. This study evaluates the ability of a vision-based tactile sensor to classify 15…

Early diagnosis of interstitial lung diseases is crucial for their treatment, but even experienced physicians find it difficult, as their clinical manifestations are similar. In order to assist with the diagnosis, computer-aided diagnosis…

Computer Vision and Pattern Recognition · Computer Science 2016-12-13 Stergios Christodoulidis , Marios Anthimopoulos , Lukas Ebner , Andreas Christe , Stavroula Mougiakakou

A unified deep neural network, denoted the multi-scale CNN (MS-CNN), is proposed for fast multi-scale object detection. The MS-CNN consists of a proposal sub-network and a detection sub-network. In the proposal sub-network, detection is…

Computer Vision and Pattern Recognition · Computer Science 2016-07-26 Zhaowei Cai , Quanfu Fan , Rogerio S. Feris , Nuno Vasconcelos

Object recognition from live video streams comes with numerous challenges such as the variation in illumination conditions and poses. Convolutional neural networks (CNNs) have been widely used to perform intelligent visual object…

Computer Vision and Pattern Recognition · Computer Science 2021-06-30 Muhammad Usman Yaseen , Ashiq Anjum , Giancarlo Fortino , Antonio Liotta , Amir Hussain

Human Activity Recognition (HAR) using wearable devices such as smart watches embedded with Inertial Measurement Unit (IMU) sensors has various applications relevant to our daily life, such as workout tracking and health monitoring. In this…

Computer Vision and Pattern Recognition · Computer Science 2021-12-22 Wenjin Tao , Haodong Chen , Md Moniruzzaman , Ming C. Leu , Zhaozheng Yi , Ruwen Qin

Action detection is an essential and challenging task, especially for densely labelled datasets of untrimmed videos. The temporal relation is complex in those datasets, including challenges like composite action, and co-occurring action.…

Computer Vision and Pattern Recognition · Computer Science 2022-03-30 Rui Dai , Srijan Das , Kumara Kahatapitiya , Michael S. Ryoo , Francois Bremond

Thermodynamics with internal variables is a common approach in continuum mechanics to model inelastic (i.e., non-equilibrium) material behavior. While this approach is computationally and theoretically attractive, it currently lacks a…

Statistical Mechanics · Physics 2025-01-31 Weilun Qiu , Shenglin Huang , Celia Reina

We propose to estimate 3D human pose from multi-view images and a few IMUs attached at person's limbs. It operates by firstly detecting 2D poses from the two signals, and then lifting them to the 3D space. We present a geometric approach to…

Computer Vision and Pattern Recognition · Computer Science 2020-04-13 Zhe Zhang , Chunyu Wang , Wenhu Qin , Wenjun Zeng

Visual-inertial SLAM systems often exhibit suboptimal performance due to multiple confounding factors including imperfect sensor calibration, noisy measurements, rapid motion dynamics, low illumination, and the inherent limitations of…

Robotics · Computer Science 2025-12-02 Tali Orlev Shapira , Itzik Klein