Enhancing statistical chart accessibility for people with low vision: insights from a user test

A remote user test was performed with two versions (one accessible and one non-accessible) of three types of web-based charts (horizontal bar chart, vertical stacked bar chart, and line chart). The objectives of the test were: (a) to validate a set of heuristic indicators for the evaluation of the a...

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Detalles Bibliográficos
Autores: Alcaraz Martínez, Rubén, Ribera, Mireia, Adeva Fillol, Adrià, Pascual Almenara, Afra
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2024
País:España
Institución:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:dnet:recercat____::34254dacc1bfd032af271ed1de1a45cd
Acceso en línea:https://hdl.handle.net/2445/228817
Access Level:acceso abierto
Palabra clave:Accessibilitat web
Baixa visió
Analítica visual
Accessible Web sites for people with disabilities
Low vision
Visual analytics
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spelling Enhancing statistical chart accessibility for people with low vision: insights from a user testAlcaraz Martínez, RubénRibera, MireiaAdeva Fillol, AdriàPascual Almenara, AfraAccessibilitat webBaixa visióAnalítica visualAccessible Web sites for people with disabilitiesLow visionVisual analyticsA remote user test was performed with two versions (one accessible and one non-accessible) of three types of web-based charts (horizontal bar chart, vertical stacked bar chart, and line chart). The objectives of the test were: (a) to validate a set of heuristic indicators for the evaluation of the accessibility of statistical charts presented in a previous work; (b) to identify new barriers and preferences for users with low vision in the access and use of this content not previously contemplated. 12 users were tested, with a variety of conditions associated with low vision: low visual acuity (6 users), reduced central vision (2 users), reduced peripheral vision (2 users), blurry vision (1 user), sensitivity to light (3 users), Nystagmus (2 users) and color vision deficiency (CVD) (4 users). From a quantitative standpoint, accessible versions of charts were more efficient, effective, and satisfactory. From a qualitative point of view, results verify the relevance of heuristics H2, Legend; H3, Axes; H6, Data source (as data table); H10, Safe colors; H11, Contrast; H12, Legibility; H13, Image quality; H14, Resize; H16, Focus visible; H17, Independent navigation; related to the proposed tasks. As new observations, tooltips were highly valued by all users, but their implementation must be improved to avoid covering up significant parts of the charts when displayed. The data table has also been frequently used by all users, especially in the non-accessible versions, allowing them to carry out tasks more efficiently. The position and size of the legend can be a significant barrier if it is too small or appears in an unusual position. Finally, despite the limitations related to color perception, some users prefer color graphics to black and white, so, to target all profiles, it is necessary to redundantly encode categories with colors and patterns as well.Springer Verlag2026202620242026info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersion39 p.application/pdfhttps://hdl.handle.net/2445/228817Articles publicats en revistes (Biblioteconomia, Documentació i Comunicació Audiovisual)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)InglésReproducció del document publicat a: https://doi.org/10.1007/s10209-024-01111-4Universal Access in the Information Society, 2024https://doi.org/10.1007/s10209-024-01111-4llicència CC (c) Alcaraz Martínez, Rubén et al., Springer, 2024http://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:dnet:recercat____::34254dacc1bfd032af271ed1de1a45cd2026-05-29T05:05:01Z
dc.title.none.fl_str_mv Enhancing statistical chart accessibility for people with low vision: insights from a user test
title Enhancing statistical chart accessibility for people with low vision: insights from a user test
spellingShingle Enhancing statistical chart accessibility for people with low vision: insights from a user test
Alcaraz Martínez, Rubén
Accessibilitat web
Baixa visió
Analítica visual
Accessible Web sites for people with disabilities
Low vision
Visual analytics
title_short Enhancing statistical chart accessibility for people with low vision: insights from a user test
title_full Enhancing statistical chart accessibility for people with low vision: insights from a user test
title_fullStr Enhancing statistical chart accessibility for people with low vision: insights from a user test
title_full_unstemmed Enhancing statistical chart accessibility for people with low vision: insights from a user test
title_sort Enhancing statistical chart accessibility for people with low vision: insights from a user test
dc.creator.none.fl_str_mv Alcaraz Martínez, Rubén
Ribera, Mireia
Adeva Fillol, Adrià
Pascual Almenara, Afra
author Alcaraz Martínez, Rubén
author_facet Alcaraz Martínez, Rubén
Ribera, Mireia
Adeva Fillol, Adrià
Pascual Almenara, Afra
author_role author
author2 Ribera, Mireia
Adeva Fillol, Adrià
Pascual Almenara, Afra
author2_role author
author
author
dc.subject.none.fl_str_mv Accessibilitat web
Baixa visió
Analítica visual
Accessible Web sites for people with disabilities
Low vision
Visual analytics
topic Accessibilitat web
Baixa visió
Analítica visual
Accessible Web sites for people with disabilities
Low vision
Visual analytics
description A remote user test was performed with two versions (one accessible and one non-accessible) of three types of web-based charts (horizontal bar chart, vertical stacked bar chart, and line chart). The objectives of the test were: (a) to validate a set of heuristic indicators for the evaluation of the accessibility of statistical charts presented in a previous work; (b) to identify new barriers and preferences for users with low vision in the access and use of this content not previously contemplated. 12 users were tested, with a variety of conditions associated with low vision: low visual acuity (6 users), reduced central vision (2 users), reduced peripheral vision (2 users), blurry vision (1 user), sensitivity to light (3 users), Nystagmus (2 users) and color vision deficiency (CVD) (4 users). From a quantitative standpoint, accessible versions of charts were more efficient, effective, and satisfactory. From a qualitative point of view, results verify the relevance of heuristics H2, Legend; H3, Axes; H6, Data source (as data table); H10, Safe colors; H11, Contrast; H12, Legibility; H13, Image quality; H14, Resize; H16, Focus visible; H17, Independent navigation; related to the proposed tasks. As new observations, tooltips were highly valued by all users, but their implementation must be improved to avoid covering up significant parts of the charts when displayed. The data table has also been frequently used by all users, especially in the non-accessible versions, allowing them to carry out tasks more efficiently. The position and size of the legend can be a significant barrier if it is too small or appears in an unusual position. Finally, despite the limitations related to color perception, some users prefer color graphics to black and white, so, to target all profiles, it is necessary to redundantly encode categories with colors and patterns as well.
publishDate 2024
dc.date.none.fl_str_mv 2024
2026
2026
2026
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/228817
url https://hdl.handle.net/2445/228817
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a: https://doi.org/10.1007/s10209-024-01111-4
Universal Access in the Information Society, 2024
https://doi.org/10.1007/s10209-024-01111-4
dc.rights.none.fl_str_mv llicència CC (c) Alcaraz Martínez, Rubén et al., Springer, 2024
http://creativecommons.org/licenses/by/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv llicència CC (c) Alcaraz Martínez, Rubén et al., Springer, 2024
http://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 39 p.
application/pdf
dc.publisher.none.fl_str_mv Springer Verlag
publisher.none.fl_str_mv Springer Verlag
dc.source.none.fl_str_mv Articles publicats en revistes (Biblioteconomia, Documentació i Comunicació Audiovisual)
reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.811543

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