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3D representation and reconstruction of human bodies have been studied for a long time in computer vision. Traditional methods rely mostly on parametric statistical linear models, limiting the space of possible bodies to linear…

Computer Vision and Pattern Recognition · Computer Science 2021-12-01 Sandro Lombardi , Bangbang Yang , Tianxing Fan , Hujun Bao , Guofeng Zhang , Marc Pollefeys , Zhaopeng Cui

We present a novel hierarchical model for human activity recognition. In contrast to approaches that successively recognize actions and activities, our approach jointly models actions and activities in a unified framework, and their labels…

Robotics · Computer Science 2015-03-09 Ninghang Hu , Gwenn Englebienne , Zhongyu Lou , Ben Kröse

Automatic emotion recognition has become a trending research topic in the past decade. While works based on facial expressions or speech abound, recognizing affect from body gestures remains a less explored topic. We present a new…

Computer Vision and Pattern Recognition · Computer Science 2018-01-24 Fatemeh Noroozi , Ciprian Adrian Corneanu , Dorota Kamińska , Tomasz Sapiński , Sergio Escalera , Gholamreza Anbarjafari

Articulated hand pose estimation is a challenging task for human-computer interaction. The state-of-the-art hand pose estimation algorithms work only with one or a few subjects for which they have been calibrated or trained. Particularly,…

Human-Computer Interaction · Computer Science 2017-12-11 Jameel Malik , Ahmed Elhayek , Didier Stricker

We introduce SkelFormer, a novel markerless motion capture pipeline for multi-view human pose and shape estimation. Our method first uses off-the-shelf 2D keypoint estimators, pre-trained on large-scale in-the-wild data, to obtain 3D joint…

Computer Vision and Pattern Recognition · Computer Science 2024-04-22 Vandad Davoodnia , Saeed Ghorbani , Alexandre Messier , Ali Etemad

Gait recognition is a promising biometric with unique properties for identifying individuals from a long distance by their walking patterns. In recent years, most gait recognition methods used the person's silhouette to extract the gait…

Computer Vision and Pattern Recognition · Computer Science 2022-04-19 Torben Teepe , Johannes Gilg , Fabian Herzog , Stefan Hörmann , Gerhard Rigoll

A human action can be seen as transitions between one's body poses over time, where the transition depicts a temporal relation between two poses. Recognizing actions thus involves learning a classifier sensitive to these pose transitions as…

Computer Vision and Pattern Recognition · Computer Science 2017-04-03 Guillermo Garcia-Hernando , Tae-Kyun Kim

In this paper, we propose a new hand gesture recognition method based on skeletal data by learning SPD matrices with neural networks. We model the hand skeleton as a graph and introduce a neural network for SPD matrix learning, taking as…

Computer Vision and Pattern Recognition · Computer Science 2019-05-21 Xuan Nguyen , Luc Brun , Olivier Lezoray , Sébastien Bougleux

We propose a method which can detect events in videos by modeling the change in appearance of the event participants over time. This method makes it possible to detect events which are characterized not by motion, but by the changing state…

Computer Vision and Pattern Recognition · Computer Science 2013-06-21 Daniel Paul Barrett , Jeffrey Mark Siskind

The introduction of low-cost RGB-D sensors has promoted the research in skeleton-based human action recognition. Devising a representation suitable for characterising actions on the basis of noisy skeleton sequences remains a challenge,…

Computer Vision and Pattern Recognition · Computer Science 2015-04-21 Ruizhi Qiao , Lingqiao Liu , Chunhua Shen , Anton von den Hengel

Predicting 3D human pose from a single monoscopic video can be highly challenging due to factors such as low resolution, motion blur and occlusion, in addition to the fundamental ambiguity in estimating 3D from 2D. Approaches that directly…

Computer Vision and Pattern Recognition · Computer Science 2021-04-26 Tao Jiang , Necati Cihan Camgoz , Richard Bowden

In this work, we address the problem of 3D human pose estimation from a sequence of 2D human poses. Although the recent success of deep networks has led many state-of-the-art methods for 3D pose estimation to train deep networks end-to-end…

Computer Vision and Pattern Recognition · Computer Science 2018-10-23 Mir Rayat Imtiaz Hossain , James J. Little

Human Action Recognition (HAR), one of the most important tasks in computer vision, has developed rapidly in the past decade and has a wide range of applications in health monitoring, intelligent surveillance, virtual reality, human…

Computer Vision and Pattern Recognition · Computer Science 2023-01-18 Zhou Shuchang

Traditional human activity recognition (HAR) based on time series adopts sliding window analysis method. This method faces the multi-class window problem which mistakenly labels different classes of sampling points within a window as a…

Machine Learning · Computer Science 2018-09-24 Yong Zhang , Yu Zhang , Zhao Zhang , Jie Bao , Yunpeng Song

Objective: To test automated in vivo estimation of active and passive skeletal muscle states using ultrasonic imaging. Background: Current technology (electromyography, dynamometry, shear wave imaging) provides no general, non-invasive…

Image and Video Processing · Electrical Eng. & Systems 2019-07-04 Ryan J. Cunningham , Ian D. Loram

Accurate 3D kinematics estimation of human body is crucial in various applications for human health and mobility, such as rehabilitation, injury prevention, and diagnosis, as it helps to understand the biomechanical loading experienced…

Computer Vision and Pattern Recognition · Computer Science 2024-03-06 Zhi-Yi Lin , Bofan Lyu , Judith Cueto Fernandez , Eline van der Kruk , Ajay Seth , Xucong Zhang

A person's movement or relative positioning can be effectively captured by different types of sensors and corresponding sensor output can be utilized in various manipulative techniques for the classification of different human activities.…

Computer Vision and Pattern Recognition · Computer Science 2024-07-10 Utsab Saha , Sawradip Saha , Tahmid Kabir , Shaikh Anowarul Fattah , Mohammad Saquib

This study investigates unsupervised anomaly action recognition, which identifies video-level abnormal-human-behavior events in an unsupervised manner without abnormal samples, and simultaneously addresses three limitations in the…

Computer Vision and Pattern Recognition · Computer Science 2023-03-28 Fumiaki Sato , Ryo Hachiuma , Taiki Sekii

Previous approaches to detecting human anomalies in videos have typically relied on implicit modeling by directly applying the model to video or skeleton data, potentially resulting in inaccurate modeling of motion information. In this…

Computer Vision and Pattern Recognition · Computer Science 2023-09-28 Jian Xiao , Tianyuan Liu , Genlin Ji

The use of gait for person identification has important advantages such as being non-invasive, unobtrusive, not requiring cooperation and being less likely to be obscured compared to other biometrics. Existing methods for gait recognition…

Computer Vision and Pattern Recognition · Computer Science 2021-12-20 Adrian Cosma , Emilian Radoi
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