Context-aware obstacle detection for navigation by visually impaired

2017 ◽  
Vol 64 ◽  
pp. 103-115 ◽  
Author(s):  
Pedram Gharani ◽  
Hassan A. Karimi
Keyword(s):  
Visually Impaired ◽  
Obstacle Detection ◽  
Context Aware

scholarly journals Development and optimization of a portable guidance system for the blind and visually impaired with the application of artificial intelligence

2021 ◽  
Author(s):  
Tamas Nemes
Keyword(s):  
Artificial Intelligence ◽  
Visually Impaired ◽  
Obstacle Detection ◽  
Guidance System ◽  
Performance Standard ◽  
Audio Signals ◽  
Blind And Visually Impaired ◽  
Improve Accuracy ◽  
New Type ◽  
Map Accuracy

This work describes a new type of portable, self-regulating guidance system, which learns to recognize obstacles with the help of a camera, artificial intelligence, and various sensors and thus warn the wearer through audio signals. For obstacle detection, a MobileNetV2 model with an SSD attachment is used which was trained on a custom dataset. Moreover, the system uses the data of motion and distance sensors to improve accuracy. Experimental results confirm that the system can operate with 74.9% mAP accuracy and a reaction time of 0.15 seconds, meeting the performance standard for modern object detection applications. It will also be presented how those affected commented on the device and how the system could be transformed into a marketable product.

scholarly journals A Hands-Free Obstacle Detection and Avoidance System

2015 ◽  
Vol 5 (3) ◽  
pp. 801-804
Author(s):  
M. Abdul-Niby ◽  
M. Alameen ◽  
O. Irscheid ◽  
M. Baidoun ◽  
H. Mourtada
Keyword(s):  
Obstacle Avoidance ◽  
Visually Impaired ◽  
Low Cost ◽  
Cost Effective ◽  
Obstacle Detection ◽  
Text To Speech ◽  
Voice Signal ◽  
Visually Impaired People ◽  
Impaired People ◽  
The Voice

In this paper, we present a low cost hands-free detection and avoidance system designed to provide mobility assistance for visually impaired people. An ultrasonic sensor is attached to the jacket of the user and detects the obstacles in front. The information obtained is transferred to the user through audio messages and also by a vibration. The range of the detection is user-defined. A text-to-speech module is employed for the voice signal. The proposed obstacle avoidance device is cost effective, easy to use and easily upgraded.

A novel obstacle detection method based on deformable grid for the visually impaired

2015 ◽  
Vol 61 (3) ◽  
pp. 376-383 ◽  
Author(s):  
Mun-Cheon Kang ◽  
Sung-Ho Chae ◽  
Jee-Young Sun ◽  
Jin-Woo Yoo ◽  
Sung-Jea Ko
Keyword(s):  
Visually Impaired ◽  
Detection Method ◽  
Obstacle Detection
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