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Human Body Orientation Estimation using a Committee based Approach

Manuela Ichim, Robby T. Tan, Nico Van der Aa, Remco C. Veltkamp
2014 Proceedings of the 9th International Conference on Computer Vision Theory and Applications  
Human body orientation estimation is useful for analyzing the activities of a single person or a group of people.  ...  Estimating body orientation can be subdivided in two tasks: human tracking and orientation estimation.  ...  orientation from a video based on a committee based approach.  ... 
doi:10.5220/0004673805150522 dblp:conf/visapp/IchimTAV14 fatcat:yful5ij565frhlynvvoidrs66y

Enhancing the robustness of skin-based face detection schemes through a visual attention architecture

K. Rapantzikos, N. Tsapatsoulis
2005 IEEE International Conference on Image Processing 2005  
In face detection, humans perform conscious search; therefore, bottom up approaches are not so efficient.  ...  estimation.  ...  We consider the inclusion of motion essential in visual attention and we use a multiresolution gradient-based approach, [15] , to estimate optical flow and generate a new conspicuity map in the same manner  ... 
doi:10.1109/icip.2005.1530301 dblp:conf/icip/RapantzikosT05 fatcat:pimdftikuvfvrkyfyufnqbkjcq

Human Activity Recognition Using Gabor Wavelet Transform and Ridgelet Transform

D.K. Vishwakarma, Prachi Rawat, Rajiv Kapoor
2015 Procedia Computer Science  
The scale and rotation invariant property of GWT and orientation dependent property of RT is used to determine the feature space that represents a particular human activity.  ...  A methodology for the recognition of human activity in a video sequence based on Gabor wavelet transform (GWT) and Ridgelet transform (RT) is presented in the paper.  ...  Hence, we believe that by integration of orientation and scale based feature computed via GWT and edge based shape feature via RT gives an efficient approach to represent the human action.  ... 
doi:10.1016/j.procs.2015.07.425 fatcat:rpr4oai7hzfmpmjx6rxse3uet4

Trade-offs in monitoring social interactions

A. Matic, V. Osmani, O. Mayora
2013 IEEE Communications Magazine  
In order to estimate relative body orientation, we used the compass sensor embedded in modern mobile phones.  ...  Calculating the standard deviation of relative body orientation does not require users to carry the phone at a predefined position on the body or using complex algorithms to estimate the phone position  ... 
doi:10.1109/mcom.2013.6553687 fatcat:rd2qf276crfd5i26n2tz5elin4

An Investigation into the Accuracy of Calculating upper Body Joint Angles Using MARG Sensors

Evangelos Mazomenos, Andy Cranny, Dwaipayan Biswas, Nick Harris, Koushik Maharatna
2014 Procedia Engineering  
To achieve this, the problem of orientation estimation is formulated as a non-linear dynamical estimation problem.  ...  This prompts us to deduce that a MARG sensor-based solution is capable of calculating the upper-limb joint angles with similar accuracy to camera sensor-based systems while maintaining significant advantages  ... 
doi:10.1016/j.proeng.2014.11.693 fatcat:wxff6dikwfgvjg7xfhbygoq5pa

Survey of Motion Tracking Methods Based on Inertial Sensors: A Focus on Upper Limb Human Motion

Alessandro Filippeschi, Norbert Schmitz, Markus Miezal, Gabriele Bleser, Emanuele Ruffaldi, Didier Stricker
2017 Sensors  
After a survey on IMU-based human tracking, five techniques for motion reconstruction were selected and compared to reconstruct a human arm motion.  ...  This measurement method has a high impact in human performance assessment and human-robot interaction.  ...  of attitude, biases and noises and using a KF to estimate orientation errors and biases based on these models.  ... 
doi:10.3390/s17061257 pmid:28587178 pmcid:PMC5492902 fatcat:xvdft2sf3re77k5l3ebkjgcvra

A committee machine scheme for feature map fusion under uncertainty: the face detection case

Konstantinos E. Rapantzikos, Nicolas Tsapatsoulis
2006 International Journal of Intelligent Systems Technologies and Applications  
We propose an innovative committee machine scheme that allows for dynamically changing the committee members (maps) and weighting them according to the confidence level of their estimation.  ...  Through this machine we handle the extensions on Itti's model; we add a motion channel and a prior knowledge channel which accounts for the conscious search performed by humans when looking for faces in  ...  Acknowledgments This research work was supported (in part) by OPTOPOIHSH (Development of knowledge-based Visual Attention models for Perceptual Video Coding, 1104/01, funded by the Cyprus Research Promotion  ... 
doi:10.1504/ijista.2006.009912 fatcat:s54ewlmurzeozorphg7yl5omxy

Statistical Machine Learning for Human Behaviour Analysis

Thomas B. Moeslund, Sergio Escalera, Gholamreza Anbarjafari, Kamal Nasrollahi, Jun Wan
2020 Entropy  
Human behaviour analysis has introduced several challenges in various fields, such as applied information theory, affective computing, robotics, biometrics and pattern recognition [...]  ...  This Special Issue focused on novel vision-based approaches, mainly related to computer vision and machine learning, for the automatic analysis of human behaviour.  ...  The affective movements are represented by extracting and tracking location and orientation of body joints over time.  ... 
doi:10.3390/e22050530 pmid:33286302 fatcat:6rswrq3k3fgvjcdf6xofqtt2wm

Capture and representation of human walking in live video sequences

Jia-Ching Cheng, J.M.F. Moura
1999 IEEE transactions on multimedia  
The system models the human body as an articulated object and the human walking as a cyclic activity with highly correlated temporal patterns.  ...  Extracting human representations from video has vast applications. In this paper, we present a knowledge-based framework to capture metarepresentations for real-life video with human walkers.  ...  Gavrila and Davis [8] presented a system for tracking human movements based on a multiview approach.  ... 
doi:10.1109/6046.766736 fatcat:hpb5y3iolzfuzhhyx7uzxfeo6q

Skin colour based face detection

Son Lam Phung, D. Chai, A. Bouzerdoum
2001 The Seventh Australian and New Zealand Intelligent Information Systems Conference, 2001  
This paper describes a new approach to face detection. A colour input image is first processed using neural-networks to detect skin regions in the image.  ...  The output of the committee machine is processed by a 2D smoothing filter before being converted into a binary map using a threshold.  ...  It is fair to conclude A multi-stage face detection approach based on that the committee machine approach offers skin detection is presented.  ... 
doi:10.1109/anziis.2001.974071 fatcat:yfosas4xzrg7lhtn3b3tef5spy

Human Upper Body Pose Estimation in Static Images [chapter]

Mun Wai Lee, Isaac Cohen
2004 Lecture Notes in Computer Science  
We present an MCMC framework for estimating 3D human upper body pose.  ...  Qualitative and quantitative results show that the technique is effective in estimating 3D body pose over a variety of images.  ...  We would like to thank the PETS workshop committee for providing images on meeting scene.  ... 
doi:10.1007/978-3-540-24671-8_10 fatcat:6jpssbjlbngpzalmk6xdmunabe

PSM: A Predictive Safety Model for Body Motion Based On the Spring-Damper Pendulum [article]

Seyed Amir Tafrishi and Ankit A. Ravankar and Yasuhisa Hirata
2022 arXiv   pre-print
The estimated safe orientation of humans is obtained by integrating a safety dataset and an elastic spring-damper model in a way that the proposed approach can realize complex motions at different safety  ...  Quantifying the safety of the human body orientation is an important issue in human-robot interaction.  ...  In future, We plan to combine the method with other assistive robots to use the provided information for more agile and ergonomic transportation. VI.  ... 
arXiv:2207.14556v1 fatcat:4juulmilajdljc6tlkp745zod4

Fall Detection Based on Body Part Tracking Using a Depth Camera

Zhen-Peng Bian, Junhui Hou, Lap-Pui Chau, Nadia Magnenat-Thalmann
2015 IEEE journal of biomedical and health informatics  
In this paper, we propose a robust fall detection approach by analyzing the tracked key joints of the human body using a single depth camera.  ...  Compared to the rivals that rely on the RGB inputs, the proposed scheme is independent of illumination of the lights and can work even in a dark room.  ...  In this paper, a robust fall detection system based on human body part tracking using a depth camera is proposed.  ... 
doi:10.1109/jbhi.2014.2319372 pmid:24771601 fatcat:7oo4lvnievh6dnoo7yha6yogvi

Kinematics based sensory fusion for wearable motion assessment in human walking

S. Šlajpah, R. Kamnik, M. Munih
2014 Computer Methods and Programs in Biomedicine  
This paper presents a novel sensory fusion algorithm for assessing the orientations of human body segments in long-term human walking based on signals from wearable sensors.  ...  The wearable sensory system incorporates seven inertial measurement units attached to the human body segments and two instrumented shoe insoles.  ...  The approach is based on fusing measured accelerations and angular velocities with calculated accelerations based on human body kinematic relations.  ... 
doi:10.1016/j.cmpb.2013.11.012 pmid:24374292 fatcat:j5tnbfscajb5xdpmfzmiztr7yq

Custom IMU-Based Wearable System for Robust 2.4 GHz Wireless Human Body Parts Orientation Tracking and 3D Movement Visualization on an Avatar

Javier González-Alonso, David Oviedo-Pastor, Héctor J. Aguado, Francisco J. Díaz-Pernas, David González-Ortega, Mario Martínez-Zarzuela
2021 Sensors  
The proposed system can be used for wireless real-time human body parts orientation tracking with up to 10 custom sensors, at least at 50 Hz.  ...  The aim of this work is two-fold: (1) Proving the feasibility of building an affordable custom solution aimed at simultaneous multiple body parts orientation tracking; while providing a detailed bottom-up  ...  In the proposed system, we take a similar approach. q = w + xi + yj + zk = (q 0 , q 1 , q 2 , q 3 ) (1) In IMU-based movement tracking systems, the human body is represented as a biomechanical model consisting  ... 
doi:10.3390/s21196642 pmid:34640961 pmcid:PMC8512038 fatcat:plyevkutdnas3ctddr6opsveli
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