Smart White Cane for Unevenness Detection Using an Optical Device for Visually Impaired People Assistance

2021 ◽  
pp. 659-671
Author(s):  
Fernando Yupa ◽  
Nicolas Pozo ◽  
Edy Ayala
Budkavlen ◽  
2020 ◽  
Vol 98 ◽  
pp. 39-64
Author(s):  
Maria Bäckman

The White Cane – A tool that both helps and hinders Bodies, shame, normality and the agency of objects   Maria Bäckman   The article discusses the attempts of visually impaired individuals tosometimes pass as seeing. The background is the resistance that many blind or visually impaired people testify they feel, during their ongoingrehabilitation, about a white cane. Often, on these occasions they provid descriptions of dramatic narratives in which the user explains what it was like when they first realized that it was now really time to start using a cane (for example: When I fell in the water from the quay, or stepped out in front of a bus, etc.). However, many also relate the way a cane, even in more mundane contexts, makes the individual’s visual inability obvious to others and thereby makes the person particularly vulnerable. The tool that connects the visually impaired with the outside world is thus also a material expression which makes both the visual damage and the cane usersmore noticeable as less than a fully functional individual.By holding on to the materiality of the cane and its nature of being a physical object, our understanding can be increased of the ambivalent relationship that many visually impaired people develop with a white cane. On the basis of social materiality studies and the concept of ableism, taken from critical handicap research, the article shows how the use of a white cane takes place in a public space; a space where the user variously inhabits an “imaginary” full-sighted body and another, existing body, which on the contrary is characterized by its weakened vision. However, it is important to realize that the persistent rejection mechanism that many visually impaired people have for a cane is intimately linked to ableism and existing norms of bodily functions. A desire to repel an object that reduces one to something else, and consequently to a somewhat lower standing, is a perfectly reasonable reaction to a deeply rooted social conflict. For many people with visual impairment, the resistance to a white cane must therefore be understood as a refusal to embody a functional normative failure.


2018 ◽  
Vol 30 (1) ◽  
pp. 86-92 ◽  
Author(s):  
Kazuteru Tobita ◽  
◽  
Katsuyuki Sagayama ◽  
Mayuko Mori ◽  
Ayako Tabuchi

We developed a robot that can guide visually impaired people and elderly people as they walk around in large hospitals. In relation to this, a previous report described the structure of a guidance robot and the comparison of its use with that of a white cane. It was shown that with the use of the robot, participants could move more easily, safely, and confidently than with a white cane. However, to solve the problems encountered with the use of the previous robot, a new guidance robot was fabricated. This paper describes the structure of the new robot and the results of the demonstration examination of the robot in the Kanagawa Rehabilitation Center. The robot navigates to reach a destination set by using the touch panel, whereas velocity depends on the force exerted by the user on the robot. The questionnaire answered by the participants were evaluated using the system usability scale, which showed that the acceptability range of the robot is “Acceptable” and its usability is high.


Electronics ◽  
2021 ◽  
Vol 10 (14) ◽  
pp. 1619
Author(s):  
Otilia Zvorișteanu ◽  
Simona Caraiman ◽  
Robert-Gabriel Lupu ◽  
Nicolae Alexandru Botezatu ◽  
Adrian Burlacu

For most visually impaired people, simple tasks such as understanding the environment or moving safely around it represent huge challenges. The Sound of Vision system was designed as a sensory substitution device, based on computer vision techniques, that encodes any environment in a naturalistic representation through audio and haptic feedback. The present paper presents a study on the usability of this system for visually impaired people in relevant environments. The aim of the study is to assess how well the system is able to help the perception and mobility of the visually impaired participants in real life environments and circumstances. The testing scenarios were devised to allow the assessment of the added value of the Sound of Vision system compared to traditional assistive instruments, such as the white cane. Various data were collected during the tests to allow for a better evaluation of the performance: system configuration, completion times, electro-dermal activity, video footage, user feedback. With minimal training, the system could be successfully used in outdoor environments to perform various perception and mobility tasks. The benefit of the Sound of Vision device compared to the white cane was confirmed by the participants and by the evaluation results to consist in: providing early feedback about static and dynamic objects, providing feedback about elevated objects, walls, negative obstacles (e.g., holes in the ground) and signs.


Technologies ◽  
2020 ◽  
Vol 8 (3) ◽  
pp. 37 ◽  
Author(s):  
Mohamed Dhiaeddine Messaoudi ◽  
Bob-Antoine J. Menelas ◽  
Hamid Mcheick

According to the statistics provided by the World Health Organization, the number of people suffering from visual impairment is approximately 1.3 billion. The number of blind and visually impaired people is expected to increase over the coming years, and it is estimated to triple by the end of 2050 which is quite alarming. Keeping the needs and problems faced by the visually impaired people in mind, we have come up with a technological solution that is a “Smart Cane device” that can help people having sight impairment to navigate with ease and to avoid the risk factors surrounding them. Currently, the three main options available for blind people are using a white cane, technological tools and guide dogs. The solution that has been proposed in this article is using various technological tools to come up with a smart solution to the problem to facilitate the users’ life. The designed system mainly aims to facilitate indoor navigation using cloud computing and Internet of things (IoT) wireless scanners. The goal of developing the Smart Cane can be achieved by integrating various hardware and software systems. The proposed solution of a Smart Cane device aims to provide smooth displacement for the visually impaired people from one place to another and to provide them with a tool that can help them to communicate with their surrounding environment.


2017 ◽  
Vol 29 (4) ◽  
pp. 720-727 ◽  
Author(s):  
Kazuteru Tobita ◽  
◽  
Katsuyuki Sagayama ◽  
Hironori Ogawa

We are developing the robot in order to guide visually impaired persons in large hospitals. This paper describes the structure of the robot and the results of a demonstration examination in Kanagawa Rehabilitation Hospital, Japan. The robot navigates to the destination while steering, depending on the force with which the user pushes on the robot. The success rate for reaching a destination with the robot was higher than with a white cane in the testing at Kanagawa Rehabilitation Hospital. We evaluated the traveling time and the participant questionnaire as an endpoint by Wilcoxon signed-rank test. Though there is no advantage in traveling time between use of the white cane and the robot, according to the scores of the participants questionnaire, it was shown that traveling with the robot was better than traveling with the white cane for the participants.


2018 ◽  
Vol 12 (2) ◽  
pp. 9-13 ◽  
Author(s):  
Maymounah ALSHAJAJEER ◽  
Maryam ALMOUSA ◽  
Qasem AL-HAIJA

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