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Utilizing inertial sensors as an extension of a camera tracking system for gathering movement data in dense crowds / Jette Schumann. Jülich : Forschungszentrum Jülich GmbH, Zentralbibliothek, Verlag, [2022] ; copyright 2022
Inhalt
Introduction
Motivation
State of the Art
Data Capturing in Pedestrian Experiments
Tracking with Inertial Measurement Units
Objectives, Approach and Limitations
Thesis Outline
Data Capture
Hybrid Tracking System
Camera System
IMU System
Conducted Studies
Movement Studies with Heterogeneous Crowds
Validation with a 3D Camera Tracking System
Methodology
Overview
Frames of Reference
Data Flow and Processing
Tracking with Inertial Sensors
Data Preprocessing
Orientation Tracking
Orientation Representation
Madgwick's Orientation Filter
Distance Tracking
Application of Double Integration
Application of a Kalman Filter
Fusion of IMU and Camera Data
Synchronization and Calibration
Utilizing Camera Data while Tracking
Processing Camera Data
Correction
Adaptive Correction
Framework
Code Structure
Data Flow and Processing
Analysis and Results
Distance Tracking
IMU Data Example
Validation of Heading Accuracy
Double Integration
MAUKF
Effects of the Correction Methods
Comparison of the Different Approaches
Heading Tracking
Method for Validation
Rotation of Wheelchair
Rotation of Upper Body
Application
Study Setup
Twist Angle
Definition and Calculation
Error Analysis
Analysis and Results
Rotation in the Bottleneck
Rotation and Motivation
Rotation and Density
Rotation and Flow
Future Experiments
Suggested Improvements
Further Analysis
Closing Remarks
Conclusions
Outlook
Appendix List of Commerical IMU Systems
Appendix Framework Usage and Extension
Preparatory Work and Requirements
Configuration Files
Using the Classes
Appendix Supplementary Material for SiME Studies
Documentation of Analyzed Data Sets
Raw IMU Data
Appendix Supplementary Material for Optitrack Studies
Calculated Angles
Error in Heading
Appendix Supplementary Material for Studies on Twist Angle
Synchronization
Classification of IMU Data Sets
Appendix Publications
References
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