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Obstacle Detection in Infrared Navigation for Blind People and Mobile Robots.
Ioannis Papagianopoulos1,2, Gilbert De Mey2, Andrzej Kos3
1Department of Electrical and Computer Engineers, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece.
Sensors (Basel, Switzerland)
|August 26, 2023
Summary
This study uses infrared thermography to detect building corners, aiding navigation for visually impaired individuals and mobile robots. The research confirms that wall temperature decreases towards corners, enabling obstacle avoidance systems.
Area of Science:
- Thermophysics
- Robotics
- Assistive Technology
Background:
- Continuation of research on infrared navigation for blind people and mobile robots.
- Focuses on detecting obstacles, specifically corners, within a trajectory.
- Investigates the thermal distribution of internal building walls near corners.
Purpose of the Study:
- To develop an infrared-based system for detecting corners to aid navigation.
- To enhance safety and autonomy for blind individuals and mobile robots by providing corner warnings.
- To contribute to the field of computer vision and sensor technology for navigation.
Main Methods:
- Theoretical analysis of heat transfer and temperature distribution near corners.
- Numerical simulations to model thermal behavior.
- Experimental measurements to validate theoretical and numerical findings.
Main Results:
- Confirmed that wall temperature decreases towards a corner due to heat transfer.
- Demonstrated the feasibility of using infrared thermography for corner detection.
- Established a correlation between geometry, heat transfer, and detectable temperature gradients.
Conclusions:
- Infrared thermography is a viable method for detecting corners in indoor environments.
- The developed approach can be integrated into assistive devices for the visually impaired.
- The findings support the application of this technology in autonomous mobile robot navigation systems.

