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

Sensors

Quoc Khanh Dang¹  Youngjoon Chee¹  Duy Duong Pham¹  Young Soo Suh² 

[1] Department of Electrical Engineering, University of Ulsan, Namgu, Ulsan 680-749, Korea

关键词: blind;    virtual cane;    inertial sensor;    assisting system;    Kalman filter;   

DOI  :  10.3390/s16010095

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2016 by the authors; licensee MDPI, Basel, Switzerland.