Improving the Accuracy of Human Body Orientation Estimation With Wearable IMU Sensors

2017 ◽  
Vol 66 (3) ◽  
pp. 535-542 ◽  
Author(s):  
Hamad Ahmed ◽  
Muhammad Tahir
Keyword(s):  
Human Body ◽  
Body Orientation ◽  
Orientation Estimation

Human Body Orientation from 2D Images

2021 ◽  
Author(s):  
Karam Abughalieh ◽  
Shadi Alawneh
Keyword(s):  
Human Body ◽  
Body Orientation ◽  
2D Images

scholarly journals WiFi Positioning Based on User Orientation Estimation and Smartphone Carrying Position Recognition

2018 ◽  
Vol 2018 ◽  
pp. 1-11 ◽  
Author(s):  
Zhi-An Deng ◽  
Zhiyu Qu ◽  
Changbo Hou ◽  
Weijian Si ◽  
Chunjie Zhang
Keyword(s):  
Human Body ◽  
Principal Component ◽  
Random Forest Classifier ◽  
Orientation Estimation ◽  
Positioning Accuracy ◽  
Positioning Systems ◽  
Magnetic Perturbations ◽  
User Orientation ◽  
Signal Attenuations ◽  
Accuracy Performance

Accuracy performance of WiFi fingerprinting positioning systems deteriorates severely when signal attenuations caused by human body are not considered. Previous studies have proposed WiFi fingerprinting positioning based on user orientation using compasses built in smartphones. However, compasses always cannot provide required accuracy of user orientation estimation due to the severe indoor magnetic perturbations. More importantly, we discover that not only user orientations but also smartphone carrying positions may affect signal attenuations caused by human body greatly. Therefore, we propose a novel WiFi fingerprinting positioning approach considering both user orientations and smartphone carrying positions. For user orientation estimation, we deploy Rotation Matrix and Principal Component Analysis (RMPCA) approach. For carrying position recognition, we propose a robust Random Forest classifier based on the developed orientation invariant features. Experimental results show that the proposed WiFi positioning approach may improve positioning accuracy significantly.

scholarly journals Infants' perception of human body orientation and the effect of a surrounding square

2010 ◽  
Vol 52 (4) ◽  
pp. 281-290
Author(s):  
AKI TSURUHARA ◽  
SO KANAZAWA ◽  
MASAMI K. YAMAGUCHI
Keyword(s):  
Human Body ◽  
Body Orientation
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