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Human body parsing remains a challenging problem in natural scenes due to multi-instance and inter-part semantic confusions as well as occlusions. This paper proposes a novel approach to decomposing multiple human bodies into semantic part…

Computer Vision and Pattern Recognition · Computer Science 2024-07-09 Tinghuai Wang , Huiling Wang

Human actions comprise of joint motion of articulated body parts or `gestures'. Human skeleton is intuitively represented as a sparse graph with joints as nodes and natural connections between them as edges. Graph convolutional networks…

Computer Vision and Pattern Recognition · Computer Science 2018-09-14 Kalpit Thakkar , P J Narayanan

Human activity recognition in videos has been widely studied and has recently gained significant advances with deep learning approaches; however, it remains a challenging task. In this paper, we propose a novel framework that simultaneously…

Computer Vision and Pattern Recognition · Computer Science 2021-01-25 Dong-Gyu Lee , Seong-Whan Lee

In this paper we propose the use of quantum genetic algorithm to optimize the support vector machine (SVM) for human action recognition. The Microsoft Kinect sensor can be used for skeleton tracking, which provides the joints' position…

Machine Learning · Statistics 2017-12-18 Yafeng Liu , Shimin Feng , Zhikai Zhao , Enjie Ding

Human pose estimation and action recognition are related tasks since both problems are strongly dependent on the human body representation and analysis. Nonetheless, most recent methods in the literature handle the two problems separately.…

Computer Vision and Pattern Recognition · Computer Science 2020-03-05 Diogo C Luvizon , Hedi Tabia , David Picard

Recognizing actions from still images is popularly studied recently. In this paper, we model an action class as a flexible number of spatial configurations of body parts by proposing a new spatial SPN (Sum-Product Networks). First, we…

Computer Vision and Pattern Recognition · Computer Science 2016-07-11 Jinghua Wang , Gang Wang

Real-time human activity recognition plays an essential role in real-world human-centered robotics applications, such as assisted living and human-robot collaboration. Although previous methods based on skeletal data to encode human poses…

Computer Vision and Pattern Recognition · Computer Science 2020-04-08 Brian Reily , Qingzhao Zhu , Christopher Reardon , Hao Zhang

In this paper, we show that different body parts do not play equally important roles in recognizing a human action in video data. We investigate to what extent a body part plays a role in recognition of different actions and hence propose a…

Computer Vision and Pattern Recognition · Computer Science 2017-05-24 Yuping Shen , Hassan Foroosh

Parsing human poses in images is fundamental in extracting critical visual information for artificial intelligent agents. Our goal is to learn self-contained body part representations from images, which we call visual symbols, and their…

Computer Vision and Pattern Recognition · Computer Science 2013-04-24 Fang Wang , Yi Li

Existing image-based activity understanding methods mainly adopt direct mapping, i.e. from image to activity concepts, which may encounter performance bottleneck since the huge gap. In light of this, we propose a new path: infer human part…

Computer Vision and Pattern Recognition · Computer Science 2020-04-22 Yong-Lu Li , Liang Xu , Xinpeng Liu , Xijie Huang , Yue Xu , Shiyi Wang , Hao-Shu Fang , Ze Ma , Mingyang Chen , Cewu Lu

Human activity understanding is crucial for building automatic intelligent system. With the help of deep learning, activity understanding has made huge progress recently. But some challenges such as imbalanced data distribution, action…

Computer Vision and Pattern Recognition · Computer Science 2019-08-07 Yong-Lu Li , Liang Xu , Xinpeng Liu , Xijie Huang , Yue Xu , Mingyang Chen , Ze Ma , Shiyi Wang , Hao-Shu Fang , Cewu Lu

Recognizing and categorizing human actions is an important task with applications in various fields such as human-robot interaction, video analysis, surveillance, video retrieval, health care system and entertainment industry. This thesis…

Computer Vision and Pattern Recognition · Computer Science 2021-05-03 Zahra Gharaee

Although psychological research indicates that bodily expressions convey important affective information, to date research in emotion recognition focused mainly on facial expression or voice analysis. In this paper we propose an approach to…

Human-Computer Interaction · Computer Science 2014-02-21 Stefano Piana , Alessandra Staglianò , Francesca Odone , Alessandro Verri , Antonio Camurri

We present the first single-network approach for 2D~whole-body pose estimation, which entails simultaneous localization of body, face, hands, and feet keypoints. Due to the bottom-up formulation, our method maintains constant real-time…

Computer Vision and Pattern Recognition · Computer Science 2019-10-01 Gines Hidalgo , Yaadhav Raaj , Haroon Idrees , Donglai Xiang , Hanbyul Joo , Tomas Simon , Yaser Sheikh

This article proposes a novel attention-based body pose encoding for human activity recognition that presents a enriched representation of body-pose that is learned. The enriched data complements the 3D body joint position data and improves…

Computer Vision and Pattern Recognition · Computer Science 2020-10-05 B Debnath , M O'brien , S Kumar , A Behera

Automatic human action recognition is indispensable for almost artificial intelligent systems such as video surveillance, human-computer interfaces, video retrieval, etc. Despite a lot of progress, recognizing actions in an unknown video is…

Computer Vision and Pattern Recognition · Computer Science 2018-03-22 Huy-Hieu Pham , Louahdi Khoudour , Alain Crouzil , Pablo Zegers , Sergio A. Velastin

The articulated and complex nature of human actions makes the task of action recognition difficult. One approach to handle this complexity is dividing it to the kinetics of body parts and analyzing the actions based on these partial…

Computer Vision and Pattern Recognition · Computer Science 2015-08-03 Amir Shahroudy , Gang Wang , Tian-Tsong Ng , Qingxiong Yang

Sensor-based Human Activity Recognition facilitates unobtrusive monitoring of human movements. However, determining the most effective sensor placement for optimal classification performance remains challenging. This paper introduces a…

Machine Learning · Computer Science 2023-07-07 Orhan Konak , Alexander Wischmann , Robin van de Water , Bert Arnrich

The objective of this work is to segment human body parts from egocentric video using semantic segmentation networks. Our contribution is two-fold: i) we create a semi-synthetic dataset composed of more than 15, 000 realistic images and…

Computer Vision and Pattern Recognition · Computer Science 2020-06-09 Andrija Gajic , Ester Gonzalez-Sosa , Diego Gonzalez-Morin , Marcos Escudero-Viñolo , Alvaro Villegas

Affect is often expressed via non-verbal body language such as actions/gestures, which are vital indicators for human behaviors. Recent studies on recognition of fine-grained actions/gestures in monocular images have mainly focused on…

Computer Vision and Pattern Recognition · Computer Science 2021-01-19 Ardhendu Behera , Zachary Wharton , Morteza Ghahremani , Swagat Kumar , Nik Bessis