Sight is essential in our daily tasks. Compensatory senses have been used for centuries by visually impaired individuals to navigate independently. The help of technology can minimize some challenges for visually impaired individuals. Assistive navigation technologies facilitate the pathfinding and tracing in indoor scenarios. Different modules are added to assistive navigation technologies to warn about the obstacles not only on the ground but about hanging objects. In this work, we attempt to explore new methods to assist visually impaired individuals in navigating independently in an indoor scenario. We employed a location estimation algorithm based on the fingerprinting method to estimate the initial location of the user. We mitigate the error of estimation with particle filter. The shortest path has been calculated with an A* algorithm. To provide the user with an accident-free experiment, we employed an obstacle avoidance algorithm capable of warning the users about the potential hazards. Finally, to provide an effective means of communication with the user, we employed text-to-speech and speech recognition algorithms. The main contribution of this work is to glue these modules together efficiently and affordably.

Blind or visually impaired mothers (BVIMs) raising children with disabilities experience an exceptional set of challenges that have been largely overlooked in disability and parenting research and teacher education. With this study the researcher examined how BVIMs support their children with disabilities in key areas such as behavior management, educational advocacy, caregiving, and accessing resources. Additionally, the researcher sought to understand how these mothers navigate their experiences as they challenge with societal perceptions, institutional barriers, and the daily caregiving demands. The researcher employed a qualitative case study methodology, using in-depth individual interviews and a focus group with six BVIM participants. Each participant provided reflective summaries after their interviews, which were analyzed alongside the interview transcripts. Thematic analysis was conducted using NVivo 12 software to identify patterns and themes within the data. The data analysis revealed three major themes: (1) disability, with sub-themes of stigma, and health and well-being; (2) support, with sub-themes of social and community support and educational challenges; and (3) transportation, identified as a critical issue with no sub-themes. The findings emphasized the resilience of BVIMs when faced with significant barriers. Despite the stigma they encountered during their parenting experiences, these mothers continued to advocate for their children’s needs within educational, medical, and community systems. The lack of adequate support and transportation services further complicated their parenting role, making it crucial for future interventions to address these gaps. The researcher calls for improvements in policies, education, support systems, and teacher preparation to better meet the needs of BVIMs raising children with disabilities.

The purpose of this study was to describe the prevalence of self-reported visual and neck/shoulder complaints among individuals with a low vision diagnosis. The study also aimed to examine whether there was an association between the degree of self-rated visual and the neck/shoulder complaints. There was a questionnaire survey that was conducted on patients that visits an eye center in a county in central Sweden. There were a total of 18 people participated in the survey, between 17-92 years old. The questionnaire contained 22 questions and was analyzed with SPSS. The results showed how the distributions of answers were to the questions about the respondents’ vision respectively of respondents’ musculoskeletal problems. Results also showed that there was an association between the degree of self- rated visual difficulties and the degree of self- rated neck/shoulder disorder. The results in this study support the hypothesis that a relationship exists between visual and musculoskeletal problems. / Syftet med denna studie varatt beskriva förekomsten av självskattade syn och nacke/skuldra besvär hospersoner med ögonsjukdomar. Studien syftade också till att undersöka om det fannsett samband mellan graden av självskattade synbesvär och självskattade besvär inacke/skuldra. Enkätundersökning genomfördes på patienter som besökte ensyncentral i ett län i mellersta Sverige. Totalt 18 personer deltog iundersökningen, inom ålderskategorin 17-92 år gamla. Enkäten innehöll 22 frågorinklusive bakgrundsfrågor om kön och livsfaktorer som sedan analyserades medhjälp av databasen SPSS. Resultaten visade hur fördelningarna av svaren påfrågorna om respondenternas syn respektive muskuloskeletala problem. Resultatetvisade också att det fanns ett statistiskt signifikant samband mellan graden avsjälvbeskattade synbesvär och graden av självbeskattade nacke/skuldra besvär.Resultaten ger stöd för hypotesen att det finns en relation mellan öga-nacke/skuldrabesvär hos synsvaga individer.

Self-concept scores of 19 visually-impaired adults were compared to those of 19 matched sighted adults using the Tennessee Self-Concept Scale (TSCS). All participants attended the University of North Texas. Scores were examined against the Vocabulary and Information subtests of the Wechsler Adult Intelligence Scale-Revised (WAIS-R).

An increasing amount of information content used in schools, work and everyday living is being presented in graphical form, creating accessibility challenges for individuals who are blind or visually impaired, especially in dynamic environments, such as over the internet. Refreshable haptic displays that can interact with computers can be used to access such information tactually. Main focus of this study was the development of specialized computer applications allowing users to actively compensate for the inherent issues of haptics when exploring visual diagrams as compared to vision, which we hypothesized, would improve the usability of such devices. An intuitive zooming algorithm capable of automatically detecting significant different zoom levels, providing auditory feedback, preventing cropping of information and preventing zooming in on areas where no features were present was developed to compensate for the lower spatial resolution of haptics and was found to significantly improve the performance of the participants. Another application allowing the users to perform dynamic simplifications on the diagram to compensate for the serial based nature of processing 2D geometric information was tested and found to significantly improve the performance of the participants. For both applications participants liked the user interface and found it more usable, as expected. In addition, in this study we investigated methods that can be used to effectively present different visual features as well as overlaying features present in the visual diagrams. Three methods using several combinations of tactile and auditory modalities were tested. We found that the performance significantly improves when using the overlapping method using different modalities. For tactile only methods developed for deaf blind individuals, the toggle method was surprisingly preferred as compared to the overlapping method.

College students with visual disabilities are less likely to graduate than their sighted counterparts. The purpose of this study was to understand the life experiences of successful college students with visual disabilities. Concepts of risk and resiliency were used as a conceptual framework for understanding how people can have positive outcomes in spite of adversity. Individual, family, school, and community influences were explored. In-depth interviews were conducted with six participants who have vision impairments and were nearing the completion or had recently completed a college degree. Data were analyzed for common themes and meanings using a phenomenological method advanced by Moustakas (1994). Validity threats were minimized through triangulation, member checks, and thick data. Risk and protective factors in the context of family, school, and community for successful college students with visual disabilities were identified. Implications for rehabilitation counselors, college counselors, and special education teachers were discussed. Interventions to move students with visual disabilities toward resiliency and minimize the impact of risk factors that impede success were proposed. Suggestions for future research were offered.

Os parques são espaços de lazer essenciais para convivência e interação na sociedade, sendo locais públicos, que devem oferecer igualdade de possibilidades e utilização por todos, não segregando ou excluindo. Mas, na realidade, os parques públicos urbanos brasileiros ainda não dispõem de condições básicas para o deslocamento seguro e autônomo das pessoas com deficiência visual. Por meio desta pesquisa, objetivou-se identificar as restrições que o ambiente impõe a esse grupo de indivíduos, bem como conhecer suas necessidades, habilidades e limitações, compreendendo a sua percepção do espaço, e identificando a influência dos elementos cognitivos auxiliares dessa percepção. Buscou-se ainda avaliar a eficácia das medidas de acessibilidade implantadas em parques urbanos para as pessoas com deficiência visual, analisando a sua relação com estes espaços livres públicos de lazer. Para tal, realizou-se uma revisão bibliográfica aprofundada acerca do tema, atentando para as normas e legislações vigentes; entrevistas com especialistas de outras áreas do conhecimento, como psicólogos, educadores e especialistas em orientação e mobilidade; e contou-se com a contribuição de pessoas com deficiência visual por meio da aplicação de ferramentas como entrevistas, grupos focais, observações participantes, e passeios acompanhados em alguns parques de São Paulo, para a coleta de dados. O estudo pautou-se por uma abordagem qualitativa de pesquisa, cujos resultados ressaltaram a importância dos parques como espaços de lazer para as pessoas com deficiência visual e a atual falta de acessibilidade dos mesmos. Apesar da legislação brasileira, e em especial da cidade de São Paulo, estabelecer a garantia de acesso e utilização dos parques pelas pessoas com deficiência em geral, essa determinação não é cumprida pelo próprio poder público, responsável pelo gerenciamento e manutenção dos parques uranos. E em relação às normas atuais, esta dissertação sugere alguns acréscimos e recomendações para que os parques realmente possibilitem o deslocamento autônomo e independente das pessoas cegas e com baixa visão. Por fim, com a realização desta pesquisa percebe-se que os ambientes muito abertos, amplos e com muitas pessoas são naturalmente complicados para as pessoas com deficiência visual, mas é possível deixá-los totalmente acessíveis para este público-alvo, e é algo necessário, visto que esta parte da população demonstrou grande interesse e deve ser incluída plenamente nos espaços públicos em questão. / Parks are places for leisure activities, they are essential for society\'s coexistence and interaction, being by definition public sites that should offer equal possibilities and universal use, never segregating or excluding. However, in fact, urban public parks in Brazil still do not dispose of basic requirements for the safe and independent displacement of the visually impaired persons. The present research seeks to identify the restrictions imposed by the environment to this group of individuals, as well as knowing their needs, abilities and limitations, understanding their perception of space and identifying the influence of the cognitive elements that assist this perception. Additionally, the present work intends to evaluate the effectiveness of the accessibility measures implemented in urban parks for the visually impaired individuals, analyzing their relationship with those public free leisure sites. In order to do so, a deep bibliographic review about the theme was done, with special attention to the current rules and legislations; interviews with specialists from other fields of knowledge such as psychologists, teachers and specialist in orientation and mobility. The research has been aided by visually impaired persons whom have participated in several activities for data collection, interviews, focus groups, participant observations, as well as accompanied tours through some parks of Sao Paulo. This study is guided by a qualitative approach research method, which results highlighted the importance of parks as leisure sites for visually impaired individuals and the actual lack of accessibility of those free public sites. Even though the Brazilian legislation and specially the Sao Paulo municipality laws do establish that access and use of the parks by the visually impaired citizens is guaranteed, the public forces do not comply with such determinations, though those forces answer for the management and maintenance of urban parks. In relation to the current laws, this dissertation suggests some additions and recommendations so that parks really enable the independent and self-governing displacement of the blind and of the low vision persons. Conclusively, the present research allow us to perceive that environments that are very open, wide and crowded are naturally challenging for the visually impaired, but it is possible to make those environments completely accessible to this audience, and it is rather necessary, once part of this population showed great interest and should be fully included in the public sites concerned.

A Organização Mundial de Saúde estima que existam hoje 285 milhões de pessoas com deficiência visual grave em todo o mundo. Com o advento da tecnologia, ambientes virtuais em 3D estão sendo cada vez mais utilizados para diversas aplicações. Muitas destas aplicações, no entanto, não são acessíveis para usuários com deficiência visual, criando uma divisão digital. O objetivo deste trabalho é desenvolver uma nova técnica de interação 3D de baixo custo que permita a identificação de objetos virtuais com autonomia usando apenas propriocepção e retorno de áudio. Foi desenvolvido um protótipo implementando esta técnica e foram realizados primeiramente testes funcionais com usuários com visão para avaliar se o protótipo implementou de fato a técnica proposta. Em seguida foi realizado um pré-teste com um deficiente visual, seguido de aprimoramento do protótipo e um experimento com oito usuários com deficiência em que deveriam diferenciar objetos virtuais usando somente a técnica proposta. Os resultados se mostraram bastante positivos, com cerca de 84\\% de acerto sem nenhum treino anterior. Este resultado sugere que a técnica desenvolvida pode trazer diversos benefícios para a sociedade e para a computação, como uma maior inclusão de pessoas com deficiência visual em tarefas que exijam interação com o objetos virtuais em três dimensões em diferentes áreas de aplicação, inclusive para educação, com boa usabilidade, acessibilidade e dispositivos disponíveis por custos relativamente baixos / The World Health Organization estimates that there are currently 285 million people with severe visual impairment worldwide. With the advent of technology, 3D virtual environments are being increasingly used for several applications. Many of these applications, however, are not accessible to visually impaired users, creating a digital divide. Our goal is to develop a novel and low cost 3D interaction technique to allow the identification of virtual objects with autonomy using only proprioception and hearing. We developed a prototype implementing this technique, which was first tested with sighted users simply to verify whether it correctly implemented the proposed technique. Then we conducted a preliminary experiment with a blind user followed by some prototype improvement and an experiment with eight users with visual impairment in which they were asked to classify tridimensional virtual objects using only the proposed technique. The results were quite positive, with approximately 84\\% correct answers without any prior training. This result suggests that our technique may benefit society and computing, such as a better inclusion of visually impaired users in tasks that require interaction with virtual objects in 3D in different areas of application, including education, with good usability, accessibility and devices available for relatively low costs

Os profissionais em design de exposição, em sua responsabilidade enquanto projetistas devem pensar sobre como desenvolver sistemas e/ou recursos para fruição artística que atendam a pessoas com deficiência visual, incluindo a forma como uma pessoa totalmente habilitada utiliza este objeto/ambiente. Assim, apresenta-­‐se a pesquisa intitulada Design para experiência multissensorial em museus: fruição de objetos culturais por pessoas com deficiência visual. Seu objetivo é propor os requisitos para o projeto e desenvolvimento de recursos multimodais táteis e sonoros para fruição de objetos culturais pelo usuário com deficiência visual em museus, segundo uma abordagem integrada com base no design para a experiência. Para tanto busca-­‐se referências em áreas como o Design para Experiência e Design Emocional, Museologia, Fabricação Digital, Comunicação Acessível, Semiótica Social e Multimodalidade, entre outros. O embasamento metodológico ampara-­‐se nas abordagens de pesquisa qualitativa e pesquisa aplicada para coleta e análise de dados referente a aferição da experiência do usuário. Assim, são empregadas as técnicas de observação direta, entrevistas e Engenharia Kansei para caracterizar e compreender as experiências dos sujeitos da pesquisa, bem como para compreender os processos de desenvolvimento e os materiais para produção de recursos para acessibilidade em museus e sua consequente avaliação. A verificação do trabalho ocorreu no Museu de Porto Alegre – Joaquim Felizardo. Os requisitos de projeto para promoção da experiência multissensorial por pessoas com deficiência visual validaram a hipótese elencada em resposta ao problema de pesquisa. Além dos requisitos de projeto, chegou-­‐se a novos instrumentos para o auxílio no projeto de recursos de acessibilidade, tal como: metodologia proposta para o desenvolvimento de recursos multimodais táteis e sonoros segundo uma abordagem integrada; diretrizes para o desenvolvimento de recursos táteis e sonoros para pessoas com deficiência visual em museus; instrumento para o relacionamento de elementos táteis e sonoros segundo uma abordagem integrada; e, instrumento para avaliação da experiência pelo usuário por meio de escalas de diferencial semântico. / Professionals in exhibition design, in their responsibility as designers should think about how to develop systems and/or resources for artistic fruition that meets the visually impaired, including how a fully qualified person uses this object/environment. Thus, presents this research entitled Design for multisensory experience in museums: fruition of cultural objects by visually impaired people. This aims to propose the requirements for the design and development of tactile and audible multimodal resources for the fruition of cultural objects by the users with visual impairment in museums, in an integrated approach based on the design for the experience. Therefore look for references in areas as the Design for Experience and Emotional Design, Museology, Digital Manufacturing, Affordable Communication, Social Semiotics and Multimodality, among others. The methodological basis employs the qualitative research approaches and applied research for data collection and analysis concerning user experience’s. Thus, use of the techniques of direct observation, interviews and Kansei Engineering to characterize and understand the experiences of research subjects, as well as understand the development of processes and materials for the production of resources for accessibility in museums and their consequent evaluation. The work of verification took place at the Museum of Porto Alegre -­‐ Joaquim Felizardo. The project requirements elected for the promotion of multisensory experience for the visually impaired validated the hypothesis in response to the research problem. In addition to the project requirements, came to new tools to aid in the project of accessibility resources, such as: proposed methodology for the development of tactile and audible multimodal resources through an integrated approach; guidelines for the development of tactile and sound resources for visually impaired people in museums; instrument for the relationship of tactile and sound elements through an integrated approach; and, tool for evaluation of the experience by the user by semantic differential scales.

Acessibilidade na Web tem como objetivo possibilitar que qualquer pessoa possa entender e interagir com o conteúdo de uma página Web, independente de deficiências ou outros fatores. Embora exista uma grande quantidade de trabalhos realizados na área, pode-se ainda perceber que pessoas com alguns tipos específicos de deficiências encontram mais dificuldades ao navegar na Web, como no caso dos usuários cegos. Com intuito de minimizar os problemas enfrentados por esses usuários cegos ao navegar na Web, foi proposta nesta tese uma abordagem que consiste em extrair automaticamente o conhecimento de navegação implícito na apresentação visual de uma página Web e alterar o design dessa navegação de uma maneira otimizada a esses usuários. Com esse objetivo, primeiramente foram estudados os trabalhos relacionados aos principais problemas enfrentados pelos usuários cegos ao interagir com a Web, assim como os conjuntos de diretrizes de acessibilidade e usabilidade específicos para minimizar esses problemas, fundamentados em um mapeamento sistemático conduzido sobre o tema. Após a identificação dos problemas e diretrizes, foi desenvolvido um classificador baseado no método Naïve Bayes, considerando-se três características comumente encontradas nos padrões de design de menus de navegação, com intuito de classificar automaticamente os links contidos nesta página em diferentes classes referentes às estruturas de navegação. Após desenvolvido, o método foi testado e avaliado em sites governamentais por meio de uma análise estatística, apresentando um boa taxa de acerto em suas classificações. Com base nas dificuldades encontradas na primeira etapa de pesquisa, foi proposto um modelo de interface próprio aos usuários cegos que utilizam a Web com auxílio de um leitor de tela. Com base no classificador desenvolvido, foi proposta uma abordagem para automaticamente transformar os links de navegação classificados pelo método, em um padrão de navegação otimizado aos leitores de tela. Como prova de conceito, foi realizada uma extração semiautomática de conteúdo das páginas Web, com intuito de transformar esse conteúdo para o novo modelo de interface proposto. Nesse contexto, foi desenvolvido um protótipo de mecanismo de apoio, denominado NavAux. Esse protótipo foi avaliado através de um percurso cognitivo. Para isso, foram definidas algumas tarefas e a exploração da interface foi realizada com apoio do leitor de tela JAWS. Os resultados apresentaram indícios de que a abordagem proposta pode ser considerada uma alternativa viável para minimizar os problemas de acessibilidade enfrentados pelos usuários cegos ao navegar na Web. / Web Accessibility aims to enable that any individual may understand and interact with a Web page content, regardless of disabilities or other factors. Although there is a large number of research studies in this area, it can be noted individuals with some specific types of disabilities find it more difficulty browsing the Web, such as those who are blind. In order to minimize the problems faced by blind users when browsing the Web, the study reported in this thesis proposed an approach which consists in automatically extracting the navigation knowledge implicit in the visual presentation of a Web page and changing this navigation design to an optimized way to those users. For this purpose, the research started with a review of the papers related to the main problems faced by blind users when interacting to the Web, as well as the specific sets of accessibility and usability guidelines to minimize these problems, based on a systematic mapping study conducted on the topic. After identifying the problems and guidelines, the next step involved the development of a classifier based on the Naïve Bayes methods, considering three features commonly found in the design patterns of navigation menus, in order to automatically classify the links contained on each page into different classes relating to the navigation structures. After developed, the method was tested and assessed in governmental websites through an statistical analysis, showing a good success rate in its classifications. Based on the difficulties encountered during the first step of the research, the study proposed an interface model tailored to blind users who use the Web with the help of a screen reader. Based on the developed classifier, the study proposed an approach to automatically transform the browsing links classified by the method into an optimized navigation standard to screen readers. As a proof of concept, the following step involved a semi-automatic extraction of Web pages content, in order to transform this content to a new proposed interface model. In this context, was developed a prototype of the mechanism, named NavAux. This prototype was evaluated through a cognitive walkthrough. To this, were defined some tasks and the interface operation was performed with support of the JAWS screen reader. The results presented signs that the proposed approach can be considered a viable alternative to minimize the accessibility problems faced by blind users when browsing the Web.