scholarly journals Internet of things concept for informing visually impaired persons in indoor environments

2018 ◽  
Author(s):  
Dragan Perakovic ◽  
Marko Perisa ◽  
Ivan Cvitic ◽  
Luka Brletic
Keyword(s):  
Internet Of Things ◽  
Visually Impaired ◽  
Indoor Environments ◽  
Visually Impaired Persons

scholarly journals Innovative services for informing visually impaired persons in indoor environments

2018 ◽  
Vol 4 (15) ◽  
pp. 156720
Author(s):  
Dragan Peraković ◽  
Marko Periša ◽  
Ivan Cvitić ◽  
Luka Brletić
Keyword(s):  
Visually Impaired ◽  
Indoor Environments ◽  
Visually Impaired Persons

scholarly journals Indoor Navigation Systems for Visually Impaired Persons: Mapping the Features of Existing Technologies to User Needs

Sensors ◽  
2020 ◽  
Vol 20 (3) ◽  
pp. 636 ◽  
Author(s):  
Darius Plikynas ◽  
Arūnas Žvironas ◽  
Andrius Budrionis ◽  
Marius Gudauskis
Keyword(s):  
Visually Impaired ◽  
Evaluation Criteria ◽  
Indoor Navigation ◽  
Public Institutions ◽  
Indoor Environments ◽  
Navigation Systems ◽  
Global Positioning ◽  
Visually Impaired Persons ◽  
Head Level ◽  
Outdoor Navigation

Currently, several outdoor navigation and orientation electronic traveling aid (ETA) solutions for visually impaired (VI) people are commercially available or in active development. This paper’s survey of blind experts has shown that after outdoor navigation, the second most important ETA feature for VI persons is indoor navigation and orientation (in public institutions, supermarkets, office buildings, homes, etc.). VI persons need ETA for orientation and navigation in unfamiliar indoor environments with embedded features for the detection and recognition of obstacles (not only on the ground but also at head level) and desired destinations such as rooms, staircases, and elevators. The development of such indoor navigation systems, which do not have Global Positioning System (GPS) locational references, is challenging and requires an overview and evaluation of existing systems with different navigation technologies. This paper presents an evaluation and comparison of state-of-the-art indoor navigation solutions, and the research implications provide a summary of the critical observations, some insights, and directions for further developments. The paper maps VI needs in relation to research and development (R&D) trends using the evaluation criteria deemed most important by blind experts.

scholarly journals Information Technology and Transcription of Reading Materials for the Visually Impaired Persons in Nigeria

2017 ◽  
Vol 7 (1) ◽  
pp. 42 ◽  
Author(s):  
Christopher Nkiko ◽  
Morayo I. Atinmo ◽  
Happiness Chijioke Michael-Onuoha ◽  
Julie E. Ilogho ◽  
Michael O. Fagbohun ◽  
...  
Keyword(s):  
Information Technology ◽  
Technology Use ◽  
Visually Impaired ◽  
Modern Information Technology ◽  
Ex Post ◽  
Reading Materials ◽  
Ex Post Facto ◽  
Information Materials ◽  
Corporate Social ◽  
Visually Impaired Persons

Studies have shown inadequate reading materials for the visually impaired in Nigeria. Information technology has greatly advanced the provision of information to the visually impaired in other industrialized climes. This study investigated the extent of application of information technology to the transcription of reading materials for the visually impaired in Nigeria. The study adopted survey research design of the ex-post facto to select 470 personnel as respondents. A questionnaire titled Information Technology Use Scale (α=0.74), and Interview Schedule (α=0.75), were used. Data were analyzed using descriptive statistics and Pearson Product Moment Correlation. The findings indicate that information technology in transcription was low and a significant positive relationship between application of information technology and transcription of information materials (r=0.62: p<0.05). The study recommended among others that Multi-National Corporations should be sensitized to extend their Corporate Social Responsibility (CSR) activities to help in procuring modern information technology devices and software to enhance transcription.

scholarly journals A Survey on Mathematical Software Tools for Visually Impaired Persons: A Practical Perspective

IEEE Access ◽  
2021 ◽  
pp. 1-1
Author(s):  
Paul Mejia ◽  
Luiz Cesar Martini ◽  
Felipe Grijalva ◽  
Julio Cesar Larco ◽  
Juan Carlos Rodriguez
Keyword(s):  
Visually Impaired ◽  
Software Tools ◽  
Mathematical Software ◽  
Visually Impaired Persons

scholarly journals Conveying facial expressions to blind and visually impaired persons through a wearable vibrotactile device

PLoS ONE ◽  
2018 ◽  
Vol 13 (3) ◽  
pp. e0194737 ◽  
Author(s):  
Hendrik P. Buimer ◽  
Marian Bittner ◽  
Tjerk Kostelijk ◽  
Thea M. van der Geest ◽  
Abdellatif Nemri ◽  
...  
Keyword(s):  
Facial Expressions ◽  
Visually Impaired ◽  
Blind And Visually Impaired ◽  
Visually Impaired Persons

Computerized Image Enhancement for Visually Impaired Persons: New Technology, New Possibilities

1986 ◽  
Vol 80 (7) ◽  
pp. 849-854
Author(s):  
E. Pell ◽  
L. E. Arend ◽  
G. T. Timberlake
Keyword(s):  
Image Enhancement ◽  
Visually Impaired ◽  
Transfer Functions ◽  
Spatial Scales ◽  
New Technology ◽  
Age Related ◽  
Visual Degradation ◽  
The Individual ◽  
Visually Impaired Persons ◽  
Made In

Patients with age-related visual loss suffer reduced ability to recognize faces and other scenes in photographs and on television. Recently, progress has been made in image enhancement, using controlled distortion of digitally stored images that increases their usefulness in particular applications. Described are two approaches to image enhancement for the visually impaired. In one approach, the visual losses that characterize individual patients and disease classes are described using detailed measurements of visual degradation transfer functions, which are profiles of loss of image information at various spatial scales. The particular distortion used for image enhancement is then adjusted to the impairment of the individual patient or disease class. A second approach takes advantage of the resemblance between the visual losses of many patients and the degradation of picture information in other applications due to external limitations (e.g., fog and haze) on photography. Several enhancement algorithms have been found useful with such images and may also improve picture recognition by the visually impaired.

Listening: A Teachable Skill for Visually Impaired Persons

1979 ◽  
Vol 73 (2) ◽  
pp. 59-67
Author(s):  
Robert W. Bischoff
Keyword(s):  
Visually Impaired ◽  
Listening Skills ◽  
Compressed Speech ◽  
Visually Impaired Students ◽  
Visually Impaired Persons

Reviews the literature on listening and describes ways of helping visually impaired students to improve their listening skills. Discusses advantages of compressed speech.

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