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3D Visual Reconstruction as Prior Information for First Responder Localization and Visualization.

Susanna Kaiser1, Magdalena Linkiewicz2, Henry Meißner2

  • 1German Aerospace Center (DLR), Institute of Communications and Navigation, Oberpfaffenhofen, D-82234 Wessling, Germany.

Sensors (Basel, Switzerland)
|September 28, 2023
PubMed
Summary
This summary is machine-generated.

Emergency personnel require precise indoor positioning for effective operations. This study introduces a novel SLAM-based localization method combined with 3D building scans, achieving sub-meter accuracy for enhanced situational awareness.

Keywords:
3D building reconstructionFootSLAMcollaborative mappingindoor navigationpedestrian dead reckoningprior mapsprofessional use casessimultaneous localization and mapping

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Area of Science:

  • Robotics and Artificial Intelligence
  • Geospatial Information Systems
  • Emergency Response Technologies

Background:

  • Effective force management in emergency missions relies on real-time situational awareness.
  • Indoor localization of emergency personnel is challenging due to Global Navigation Satellite System (GNSS) signal degradation.
  • Accurate positioning is critical for coordinating first responders during interventions.

Purpose of the Study:

  • To develop and evaluate a novel indoor localization system for emergency personnel.
  • To enhance real-time situation picture generation for improved operational coordination.
  • To provide accurate geo-referenced positions of emergency forces within buildings.

Main Methods:

  • Integration of an inertial localization technique based on Simultaneous Localization and Mapping (SLAM).
  • Utilization of 3D building scans as prior information for geo-referencing.
  • Development of a novel method for converting point clouds into a hexagonal prism map for the SLAM algorithm.
  • Lightweight equipment design for first responders.

Main Results:

  • Achieved average indoor positioning accuracy of less than 1 meter.
  • Successfully generated a real-time situation picture integrating environmental layout and personnel positions.
  • Demonstrated the advantage of 3D building reconstruction for coordinating operations.

Conclusions:

  • The proposed SLAM-based localization combined with 3D building scans provides accurate and reliable indoor positioning for emergency personnel.
  • This system significantly enhances situational awareness and operational coordination in professional use cases.
  • The approach ensures lightweight equipment for first responders, facilitating effective mission deployment.