Consideration of the experience of a blind user using a tactile graphics editor available for blind people

2016 ◽  
Author(s):  
Noboru Takagi ◽  
Yuji Masaki ◽  
Tatsuo Motoyoshi ◽  
Shingo Morii
Keyword(s):  
Blind People ◽  
Blind User ◽  
Tactile Graphics

Multichannel ultrasonic range finder for blind people navigation

2013 ◽  
Vol 61 (3) ◽  
pp. 633-637 ◽  
Author(s):  
W. Gelmuda ◽  
A. Kos
Keyword(s):  
Navigation System ◽  
Low Cost ◽  
Obstacle Detection ◽  
Blind People ◽  
Range Finder ◽  
Safety Level ◽  
Fpga Chip ◽  
Blind User ◽  
Analog Multiplexer

Abstract The purpose of this paper is to present a multichannel ultrasonic range finder which was designed for the navigation system for blind people. A substantial number of consultations with blind people in the Blind People Centre in Krakow have shown that the navigation and obstacle detection with a help of a white stick only, is not sufficient enough to assure a high safety level. Electronic aids which are being designed for blind people should be mobile, comfortable and low-powered. That is why the MOBIAN© (a mobile safety system for the blind) project is being carried out by the authors to create a highly reliable safety navigation system for blind people. It could not only improve blind people quality of life but also their safety, especially when they are walking in unknown areas. As a part of this project, the multichannel ultrasonic range finder was designed, produced and tested. The tests have proven the device is capable of detecting objects from different directions in a range over 4 m. The device interface is easy to manage and can be controlled by almost any microcontroller or FPGA chip. The designed range finder is to be implemented in the electronic assistant project for blind people. Other systems, including the industrial ones, for instance, mobile robots or gates that count people entries, could benefit from this multichannel range finder. Usually, some low-cost ultrasonic range finders use two transducers for each channel (a transmitter and a receiver). The designed device employs only one transducer per channel which minimizes the end-device size and cost and at the same time provides with the main functionality. Novelty of this device is its multichannel design and the emplacement of the ultrasonic transducers, which can be used due to the application of the multichannel analog multiplexer. Thus, it is possible to detect obstacles, even the inclined ones, with higher reliability and increase the safety of blind people while walking. Also, this design and the transducers’ placement allow to detect obstacles much quicker, when the blind user suddenly turns.

Prototype Development of Image Editing Systems Available for Visually Impaired People and Consideration of Their User Interfaces

2016 ◽  
Vol 20 (6) ◽  
pp. 961-967 ◽  
Author(s):  
Noboru Takagi ◽  
◽  
Shingo Morii ◽  
Tatsuo Motoyoshi ◽  
Keyword(s):  
User Interfaces ◽  
Visual Information ◽  
Blind People ◽  
Line Drawings ◽  
Prototype Development ◽  
Visually Impaired People ◽  
Sufficient Detail ◽  
The Matrix ◽  
Braille Display ◽  
Tactile Graphics

For example, when sighted scholars study mathematics and physics etcetera, they need to access visual information, e.g., graphs and pictures. Furthermore, sighted people can express their own ideas and opinions visually. On the other hand, blind people can access visual information if it is expressed tactilely, but find it difficult to express their ideas and opinions visually. We are therefore developing a computer-aided system enabling blind people to draw their own figures on their own. This system consists of a matrix braille display to edit computer line drawings. The matrix braille display enables the blind to feel a tactile graphic during editing. After explaining two input methods for elementary plane shapes, we discuss two methods for scrolling tactile graphics to make the matrix braille display large enough to show tactile graphics in sufficient detail. We then show experimental results for using input and scrolling, and conclude with discussion on the usability of input and scrolling.

scholarly journals Haptic Feedback to Assist Blind People in Indoor Environment Using Vibration Patterns

Sensors ◽  
2022 ◽  
Vol 22 (1) ◽  
pp. 361
Author(s):  
Shah Khusro ◽  
Babar Shah ◽  
Inayat Khan ◽  
Sumayya Rahman
Keyword(s):  
Haptic Feedback ◽  
Spatial Information ◽  
Feedback System ◽  
Blind People ◽  
Noisy Environment ◽  
Alternative Approach ◽  
Mental Mapping ◽  
Speech Feedback ◽  
Blind User ◽  
Significant Factors

Feedback is one of the significant factors for the mental mapping of an environment. It is the communication of spatial information to blind people to perceive the surroundings. The assistive smartphone technologies deliver feedback for different activities using several feedback mediums, including voice, sonification and vibration. Researchers 0have proposed various solutions for conveying feedback messages to blind people using these mediums. Voice and sonification feedback are effective solutions to convey information. However, these solutions are not applicable in a noisy environment and may occupy the most important auditory sense. The privacy of a blind user can also be compromised with speech feedback. The vibration feedback could effectively be used as an alternative approach to these mediums. This paper proposes a real-time feedback system specifically designed for blind people to convey information to them based on vibration patterns. The proposed solution has been evaluated through an empirical study by collecting data from 24 blind people through a mixed-mode survey using a questionnaire. Results show the average recognition accuracy for 10 different vibration patterns are 90%, 82%, 75%, 87%, 65%, and 70%.

The contribution of technologies to the inclusion of the student whit a visual disability: the "smart stick for blind people"

2018 ◽  
Author(s):  
Michele Aurelio ◽  
Stefania Cecchi ◽  
Mirca Montanari ◽  
Andrea Primavera
Keyword(s):  
Collaborative Teaching ◽  
Training Needs ◽  
Blind People ◽  
Visual Disability ◽  
Innovative Teaching ◽  
Digital Education ◽  
Design And Construction

Taking into consideration the complexity of the new, heterogeneous, and different training needs currently present in the classrooms, the school is called to respond them in an effective and concrete way through inclusive educational approaches centered on the students, none excluded. On this basis, the authors, supporting the importance of technology in innovative teaching, propose the design and construction of an intelligent white stick through an inclusive cooperative methodology. The presented device, presented in this paper, is inspired by an open and collaborative teaching, enhancing a responsible digital education, accepting the training needs of all the students present in the classroom, specifically the blind student, and the recognition of the diversity in view of the reduction of disability.

Petunjuk Waktu Untuk Tuna Netra Dengan Output Suara

2019 ◽  
Vol 10 (02) ◽  
pp. 1-7
Author(s):  
Aan Febriansyah ◽  
Muslim Fathillah ◽  
Nurdin Nurdin
Keyword(s):  
Special Needs ◽  
Blind People ◽  
Storage Unit ◽  
Level Indicator ◽  
Normal People ◽  
The Voice ◽  
Time Information ◽  
Voice Output

Nowaday time indicator as hour and calendar constitutes necessary for thing a lot of person to trip routines. In general, the clock and the calendar can only be seen by normal people. People with special needs, its example is blind will have difficulty in using the clock and the calendar Get bearing with that problem, therefore to help that blind is designed and made by time indicator tool with voice output. Generally, the tool's instructions when using RTC DS1307, is microcontroller ATmega16 and ISD 25 120. Information about hour, minute, date, month, and year obtained from DS1307 RTC is accessed using microcontroller ATmega16, then from the data when the information obtained is matched in the voice storage unit on ISD25120. As a results,will be obtained time information data such as voice. Besides, time setting, alarm, battery level indicator, and charge the battery with the sound as well is the tool is equipped permanently. Finally, this tool can help the blind people to be more independent in making it easier to tell the time in living day-to-day activities.

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.

Sign in / Sign up

Export Citation Format

Share Document