scholarly journals Indoor Navigation Systems for Blind People

2018 ◽  
Author(s):  
Ali Hojjat
Keyword(s):  
Computer Vision ◽  
Visually Impaired ◽  
Indoor Navigation ◽  
Blind People ◽  
Navigation Systems ◽  
Visually Impaired People ◽  
Impaired People ◽  
Outdoor Environments

Indoor navigation systems must deal with absence of GPS signals, since they are only available in outdoor environments. Therefore, indoor systems have to rely upon other techniques for positioning users. Recently various indoor navigation systems have been designed and developed to help visually impaired people. In this paper an overview of some existing indoor navigation systems for visually impaired people are presented and they are compared from different perspectives. The evaluated techniques are ultrasonic systems, RFID-based solutions, computer vision aided navigation systems, ans smartphone-based applications.

scholarly journals Indoor Navigation Systems for Blind People

2018 ◽  
Author(s):  
Ali Hojjat
Keyword(s):  
Computer Vision ◽  
Visually Impaired ◽  
Indoor Navigation ◽  
Blind People ◽  
Navigation Systems ◽  
Visually Impaired People ◽  
Impaired People ◽  
Outdoor Environments

Indoor navigation systems must deal with absence of GPS signals, since they are only available in outdoor environments. Therefore, indoor systems have to rely upon other techniques for positioning users. Recently various indoor navigation systems have been designed and developed to help visually impaired people. In this paper an overview of some existing indoor navigation systems for visually impaired people are presented and they are compared from different perspectives. The evaluated techniques are ultrasonic systems, RFID-based solutions, computer vision aided navigation systems, ans smartphone-based applications.

scholarly journals Indoor navigation by blind people: Behaviors and challenges in unfamiliar spaces and buildings

2019 ◽  
Vol 37 (2) ◽  
pp. 140-153 ◽  
Author(s):  
Watthanasak Jeamwatthanachai ◽  
Mike Wald ◽  
Gary Wills
Keyword(s):  
Visually Impaired ◽  
Public Spaces ◽  
Indoor Navigation ◽  
Environmental Cues ◽  
Navigation Systems ◽  
Additional Information ◽  
Visually Impaired People ◽  
Impaired People ◽  
First Time ◽  
Indoor Spaces

A number of visually impaired people suffer from navigation-related activities due to mishaps that discourage them from going out for social activities and interactions. In contrast to outdoors, traveling inside public spaces is a different story, as many environmental cues cannot be used and have their own set of difficulties. Some technologies have come into play in helping these people to have freedom in navigation (e.g., accessible map, indoor navigation systems, and wearable computing devices). However, technologies like accessible maps or indoor navigation systems are insufficient to fulfill the independent navigation gap as additional information is required (obstacles, barriers, and accessibility). To promote indoor navigation and create better use of technologies for visually impaired people, it is essential to understand the facts and actual problems that they experience, and what behaviors and strategies they use to overcome any problems; these are the concerns that led to this study. In all, 30 visually impaired people and 15 experts were recruited to give an interview about the behavior and strategies used to navigate indoor spaces, especially public spaces, for example, universities, hospitals, malls, museums, and airports. The findings from this study reveal that navigating inside buildings and public spaces full of unfamiliar features is too difficult to attempt the first time for a number of reasons, reducing their confidence in independent navigation.

scholarly journals Assistive Technology for Visually Impaired People using Li-Fi

2020 ◽  
Vol 9 (4) ◽  
pp. 2261-2263
Keyword(s):  
Visible Light ◽  
Assistive Technology ◽  
Visually Impaired ◽  
Voice Recognition ◽  
Indoor Navigation ◽  
Blind People ◽  
Visually Impaired People ◽  
Impaired People

Blind people faces lot of difficulties in day to day life. While walking they may struggle during their pathway. Some of the blinds they may use the external things to guide their path. When they were in indoor systems they may not aware of certain places inside their home. They prefer the help of another people to guide their way, instead there is an Li-Fi technology used only for indoor navigation purpose. By using of transmitter and receiver systems it allows them to guide in a proper path. Using voice recognition, the system helps to move from one places to another places inside the home. This project works only through the visible light as a source for communication. So by using this project we trained those blind people to navigate their path in an proper way.

Computer Vision-Based Assistive Technology for Helping Visually Impaired and Blind People Using Deep Learning Framework

2020 ◽  
pp. 577-598
Author(s):  
Mohamamd Farukh Hashmi ◽  
Vishal Gupta ◽  
Dheeravath Vijay ◽  
Vinaybhai Rathwa
Keyword(s):  
Computer Vision ◽  
Visually Impaired ◽  
Visual Object ◽  
Blind People ◽  
Daily Routines ◽  
Learning Framework ◽  
Blind And Visually Impaired ◽  
Visually Impaired People ◽  
The World ◽  
Impaired People

Millions of people in this world can't understand environment because they are blind or visually impaired. They also have navigation difficulties which leads to social awkwardness. They can use some other way to deal with their life and daily routines. It is very difficult for them to find something in unknown environment. Blind and visually impaired people face many difficulties in conversation because they can't decide whether the person is talking to them or someone else. Computer vision-based technologies have increased so much in this domain. Deep convolutional neural network has developed very fast in recent years. It is very helpful to use computer vision-based techniques to help the visually impaired. In this chapter, hearing is used to understand the world. Both sight sense and hearing have the same similarity: both visual object and audio can be localized. Many people don't realise that we are capable of identifying location of the source of sound by just hearing it.

Touching Blind Bodies: A Critical Inquiry into Pedagogical and Cultural Constructions of Visual Disability in the Nineteenth Century

2018 ◽  
Author(s):  
Heather Tilley ◽  
Jan Eric Olsén
Keyword(s):  
Nineteenth Century ◽  
Visually Impaired ◽  
Blind People ◽  
Embodied Experience ◽  
Visual Disability ◽  
Visually Impaired People ◽  
Educational Challenges ◽  
Impaired People ◽  
The Senses ◽  
Cultural Constructions

Changing ideas on the nature of and relationship between the senses in nineteenth-century Europe constructed blindness as a disability in often complex ways. The loss or absence of sight was disabling in this period, given vision’s celebrated status, and visually impaired people faced particular social and educational challenges as well as cultural stereotyping as poor, pitiable and intellectually impaired. However, the experience of blind people also came to challenge received ideas that the visual was the privileged mode of accessing information about the world, and contributed to an increasingly complex understanding of the tactile sense. In this chapter, we consider how changing theories of the senses helped shape competing narratives of identity for visually impaired people in the nineteenth century, opening up new possibilities for the embodied experience of blind people by impressing their sensory ability, rather than lack thereof. We focus on a theme that held particular social and cultural interest in nineteenth-century accounts of blindness: travel and geography.

scholarly journals Visual Assistant for Blind People using Raspberry Pi

2021 ◽  
pp. 671-675
Author(s):  
Tejal Adep ◽  
Rutuja Nikam ◽  
Sayali Wanewe ◽  
Dr. Ketaki B. Naik
Keyword(s):  
Visually Impaired ◽  
Daily Life ◽  
Artificial Vision ◽  
Raspberry Pi ◽  
Blind People ◽  
Python Language ◽  
Visually Impaired People ◽  
Impaired People ◽  
Visual Aid ◽  
Impaired Person

Blind people face the problem in daily life. They can't even walk without any aid. Many times they rely on others for help. Several technologies for the assistance of visually impaired people have been developed. Among the various technologies being utilized to assist the blind, Computer Vision-based solutions are emerging as one of the most promising options due to their affordability and accessibility. This paper proposes a system for visually impaired people. The proposed system aims to create a wearable visual aid for visually impaired people in which speech commands are accepted by the user. Its functionality addresses the identification of objects and signboards. This will help the visually impaired person to manage day-to-day activities and navigate through his/her surroundings. Raspberry Pi is used to implement artificial vision using python language on the Open CV platform.

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