BLIND GUARD: Designing Android Apps for 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.

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

IEEE Access ◽

10.1109/access.2021.3076306 ◽

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

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

PLoS ONE ◽

10.1371/journal.pone.0194737 ◽

2018 ◽

Vol 13 (3) ◽

pp. e0194737 ◽

Cited By ~ 9

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

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

Journal of Visual Impairment & Blindness ◽

10.1177/0145482x8608000709 ◽

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.

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Listening: A Teachable Skill for Visually Impaired Persons

Journal of Visual Impairment & Blindness ◽

10.1177/0145482x7907300204 ◽

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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Night Vision Aid Option: Streamlights

Journal of Visual Impairment & Blindness ◽

10.1177/0145482x8608001010 ◽

1986 ◽

Vol 80 (10) ◽

pp. 1005-1006

Author(s):

V. L. Mosler

Keyword(s):

Visually Impaired ◽

Night Blindness ◽

Night Vision ◽

Wide Angle ◽

School Aged Children ◽

Hands On ◽

Visually Impaired Persons

Other authors have compared commercially available night vision aids used by visually impaired persons who have night blindness. The Wide Angle Mobility Lantern (WAML) is usually the more recommended device. This article suggests that other night vision aids, as yet unmentioned in the literature, may be equally effective and sometimes preferred to the WAML. Lights in the Streamlight series are comparable in price and size to the WAML and are more widely available. Personnel working with school-aged children who are night blind are encouraged to provide them with information about, and hands-on experience with, various night vision aids.

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Approaches to Increasing Assertive Behavior and Communication Skills in Blind and Visually Impaired Persons

Journal of Visual Impairment & Blindness ◽

10.1177/0145482x8608000604 ◽

1986 ◽

Vol 80 (6) ◽

pp. 794-798

Author(s):

Rona L. Harrell ◽

Felice A. Strauss

Keyword(s):

Social Interactions ◽

Learned Helplessness ◽

Visually Impaired ◽

Blind And Visually Impaired ◽

Assertive Behavior ◽

Structured Intervention ◽

Impaired Person ◽

Assertion Training ◽

Partially Sighted ◽

Visually Impaired Persons

Many visually impaired individuals are found to be too passive or too aggressive in their social interactions. Lack of assertive behavior is related to the concept of learned helplessness. Components of assertive behavior are described with suggestions for enabling the visually impaired person to develop these skills. The underlying concepts of assertion training are explained along with specific techniques to be utilized in the school or rehabilitative setting. With a structured intervention resulting in improved assertiveness skills, blind or partially sighted individuals can increase their effectiveness in communicating with others and can feel more in control of their lives.

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Research on Blinking-Luminescence Travel Support for Visually Impaired Persons

Advances in Intelligent Systems and Computing - Advances in Human Aspects of Transportation ◽

10.1007/978-3-319-60441-1_32 ◽

2017 ◽

pp. 319-324 ◽

Cited By ~ 1

Author(s):

Tomohiro Okada ◽

Takashi Miyamoto ◽

Shin-ichi Ito ◽

Katsuya Sato ◽

Norihiro Ikeda ◽

...

Keyword(s):

Visually Impaired ◽

Visually Impaired Persons

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Effects of Line Spacing on Reading Performance of Normally Sighted and Simulated Visually-Impaired Subjects: A Pilot Study Using Arabic Words

Global Journal of Health Science ◽

10.5539/gjhs.v9n8p84 ◽

2017 ◽

Vol 9 (8) ◽

pp. 84

Author(s):

Abdullah Z. Alotaibi

Keyword(s):

Visually Impaired ◽

Low Vision ◽

Reading Rate ◽

Reading Performance ◽

White Background ◽

Significant Difference ◽

Line Spacing ◽

The Difference ◽

Letter Size ◽

Visually Impaired Persons

The study aims to evaluate the role of line spacing during reading in normal and visually-impaired persons. A total of 225 normally-sighted participants with mean age of 23.7 years were asked to read Arabic sentences in a randomized order. Each Arabic sentence contains 7 lines with and without simulated cataract. The words were printed with black letters on white background to enhance contrast and fonts were in Times New Roman and of N12 letter size. The reading pages were placed on reading stand situated 25 cm away from the subject’s eyes. The simulated cataract was created by using a Bernell Cling Patch Occluder. This reduced the visual acuity of all subjects to 20/60. Each line of the text was separated by different line spacing namely: single space, 1.5, 2.0, 2.5, 3.0 and 4.0 which represents, 0.5 cm, 0.8 cm, 1.1 cm, 1.4 cm, 1.7 cm and 2.0 cm, respectively. The sheets were presented randomly and participants’ voices were recorded as they read under a controlled time. The tape was analysed later and reading rate was calculated. There was a significant difference (p<0.0001) in reading rates between the normal sighted persons and the visually impaired persons for all line spacing. Modifying the spacing between lines in prints had a significant impact (p<0.0001) on the reading rate of the visually impaired but not in normally-sighted persons (p˃0.05). Intermediate line spacing (2 and 2.5) increased the reading rate of the visually impaired persons significantly more (p<0.001) than other line spacing, but smaller or larger line spacing slowed their reading rate, significantly (p<0.001). The visually-impaired persons reported that they felt the difference in reading prints with larger line spacing as compared with normal sighted participants who did not. It is beneficial to adequately modify the line spacing in prints commonly read by low vision persons. For Arab subjects the optimum line spacing to significantly improve reading in the visually impaired should range from 0.8 to 1.1 cm. This finding may be a useful for publishers of Arab prints targeting the visually impaired persons. Thus, the implication of the study in the field of health is that by establishing the least common line spacing visualized optimally among normal and simulated visually impaired persons would be fixed as default line spacing for Arab printing to achieve better reading performance.

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