A Virtual Blind Cane Using a Line Laser-Based Vision System and an Inertial Measurement Unit

A virtual blind cane system for indoor application, including a camera, a line laser and an inertial measurement unit (IMU), is proposed in this paper. Working as a blind cane, the proposed system helps a blind person find the type of obstacle and the distance to it. The distance from the user to th...

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Bibliographic Details
Published in:Sensors (Basel, Switzerland) Switzerland), 2016-01, Vol.16 (1), p.95
Main Authors: Dang, Quoc Khanh, Chee, Youngjoon, Pham, Duy Duong, Suh, Young Soo
Format: Article
Language:English
Subjects:
Algorithms
assisting system
blind
Blindness
Cameras
Canes
Equipment Design
Humans
inertial sensor
Investigations
Kalman filter
Lasers
Monitoring, Ambulatory - instrumentation
Pedestrians
Sensors
Signal Processing, Computer-Assisted
User-Computer Interface
virtual cane
Vision systems
Visual impairment
Visually Impaired Persons - rehabilitation
Walking
Walking - physiology
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Summary:A virtual blind cane system for indoor application, including a camera, a line laser and an inertial measurement unit (IMU), is proposed in this paper. Working as a blind cane, the proposed system helps a blind person find the type of obstacle and the distance to it. The distance from the user to the obstacle is estimated by extracting the laser coordinate points on the obstacle, as well as tracking the system pointing angle. The paper provides a simple method to classify the obstacle's type by analyzing the laser intersection histogram. Real experimental results are presented to show the validity and accuracy of the proposed system.
ISSN:1424-8220
1424-8220
DOI:10.3390/s16010095