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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Tangible Vision : Empowering visually impaired to do sports in free settings

Loretz, Julian January 2020 (has links)
A visual impairment can have immense impact on the wellbeing of affected people. Depending on the degree of the impairment they often rely on the support of their close ones and have to live a very restricted lifestyle. Worldwide there are around 285 million people living with some kind of visual impairment caused by a number of different diseases. 39 million of these are blind and 246 million have a low vision. Common causes of blindness include diabetes, macular degeneration, traumatic injuries, infections of the cornea or retina, glaucoma, and inability to obtain any glasses. The deprivation of vision often makes it hard for visually impaired people to maintain a healthy lifestyle. The accessability to sport is beneficial to stay physically but also mentally fit. A recent survey showed that nearly 70 percent of visually impaired children in the US do not participate in physical education. Despite many existing aids for visually impaired people, this shows that there are no significant technical solutions yet that enable them to overcome the barriers to do physical activities. Nevertheless there is a growing market of assistive technologies for visually impaired people which is expected to double almost within the next five years. With huge technological developments that are strongly driven by the shift of the automotive industry to autonomous driving, many technologies like depth imaging will get much more affordable. This in combination with the implementation of artificial intelligence and faster networks will make it feasible to develop assistive technologies for visually imapired people that empowers them to move independently. The aim of this master thesis in Advanced Product Design was to design a wearable solution that involves assistive technology and enables visually imapired people to do sports independently and thereby get easier access to physical activities.
2

"...kommer bara nån seende fräsare och liksom bara fixar det på ett kick." : En kvalitativ studie om hur föräldrar med synnedsättning upplever och hanterar mötet med omvärlden.

Norman, Matilda, Onselius, Maria January 2009 (has links)
<p><p>The aim with this study was to gain knowledge about how parents who are visual impaired experience and manage the meeting with the world around them. To have children and to be visual impaired creates a complex situation. There is not only the problem how to manage the parenting in technical terms. The disability is also filled with stigma because it diverges from the norms of society. There is not only demands from society about how the parent should behave, the parent also create demands of themselves. Eight parents who are visual impaired were interviewed in the study. They had children who were between zero and eighteen years old. There were six mothers and two fathers. Our choice has been to enlighten our framing of the question with Goffman’s theory of stigma and Giddens theory of norms and values. Because of the lack of previous research on this subject we have used contiguous research which can be connected to our study. We have found that the people we have interviewed have to fight for their right to be a parent and that the struggle to overcome the weak position that they are in is constant. The knowledge about parents who are visual impaired is limited in the world around them. Our conclusion is that more knowledge is the key to a better treatment as are decreasing the stigma.</p></p>
3

"...kommer bara nån seende fräsare och liksom bara fixar det på ett kick." : En kvalitativ studie om hur föräldrar med synnedsättning upplever och hanterar mötet med omvärlden.

Norman, Matilda, Onselius, Maria January 2009 (has links)
The aim with this study was to gain knowledge about how parents who are visual impaired experience and manage the meeting with the world around them. To have children and to be visual impaired creates a complex situation. There is not only the problem how to manage the parenting in technical terms. The disability is also filled with stigma because it diverges from the norms of society. There is not only demands from society about how the parent should behave, the parent also create demands of themselves. Eight parents who are visual impaired were interviewed in the study. They had children who were between zero and eighteen years old. There were six mothers and two fathers. Our choice has been to enlighten our framing of the question with Goffman’s theory of stigma and Giddens theory of norms and values. Because of the lack of previous research on this subject we have used contiguous research which can be connected to our study. We have found that the people we have interviewed have to fight for their right to be a parent and that the struggle to overcome the weak position that they are in is constant. The knowledge about parents who are visual impaired is limited in the world around them. Our conclusion is that more knowledge is the key to a better treatment as are decreasing the stigma.
4

1. Jogos Escolares Brasileiros da Confederação Brasileira de Desportos para Cegos : um estudo de caso / 1st Brazilian School Games of the Brazilian Blind Sports Confederation : a case study

Matsui, Regina 26 February 2007 (has links)
Orientador: Jose Julio Gavião de Almeida / Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Educação Fisica / Made available in DSpace on 2018-08-08T14:20:32Z (GMT). No. of bitstreams: 1 Matsui_Regina_M.pdf: 834439 bytes, checksum: 05248518c8c8fd105cff43d663764afc (MD5) Previous issue date: 2007 / Resumo: A pessoa com deficiência visual possui um atraso no seu desenvolvimento motor, em decorrência das poucas oportunidades que elas possuem ao longo da vida. Nesse sentido, sabemos da importância da prática de atividade física para essas pessoas, tendo em vista que ela contribui para o desenvolvimento global da pessoa. As informações retiradas do meio e a aprendizagem de gestos e habilidades motoras contribuem na formação e no desenvolvimento motor dessas pessoas. Na busca de possibilitar essas práticas, em específico as modalidades esportivas paraolímpicas, a Confederação Brasileira de Desportos para Cegos ¿ CBDC realizou o 1º Jogos Escolares Brasileiros para crianças e jovens com deficiência visual em idade escolar. Esse evento é o tema principal do nosso trabalho e temos como objetivo, estudar, avaliar e documentar o Iº Jogos Escolares Brasileiros da CBDC, realizado na cidade de São Paulo, no período de 12 a 15 de novembro de 2004. A metodologia utilizada foi a pesquisa descritiva, sendo especificamente um estudo de caso e, como instrumento de pesquisa, utilizamos a análise documental feita através da análise de relatórios, projetos e ofícios da CBDC, relacionados a esse evento. Assim, analisamos e avaliamos (discutimos) o processo pedagógico e técnico utilizados nas modalidades de atletismo, goalball, natação, judô, futebol B1 e xadrez; o processo histórico dessas modalidades no Brasil; o papel político-social desse evento junto às instituições, a CBDC e o Comitê Paraolímpico Brasileiro - CPB e, por fim, o papel das instituições de ensino superior enquanto agentes influenciados e influenciadores pelas manifestações culturais e esportivas, para e pela sociedade. Observamos então que esse evento teve um caráter principal de proporcionar a ¿vivência¿ esportiva em algumas modalidades, porém pedagogicamente e tecnicamente as condições dos alunos/atletas foram respeitadas. Quanto ao processo histórico, apesar desse evento não exigir de fato o alto rendimento, esses jogos contribuíram para a detecção de novos talentos e, assim, para a formação de atletas de base. Notamos também que as políticas das instituições foram respeitadas e os órgãos máximos, no caso CBDC e CPB, buscaram e buscam cumprir com os objetivos e deveres em relação ao desenvolvimento de eventos voltados para o desporto escolar. Pudemos notar que esses eventos tem contado cada vez mais com a participação e envolvimento de universidades, demonstrando que atualmente essa área do esporte adaptado está abrindo espaços para discussões nas mesmas, pois oferece estudos referentes a ela, em cursos de especialização, mestrado, doutorado e nas disciplinas da graduação. Por ter sido o 1º Jogos Escolares da CBDC, muitos pontos merecem reflexão, como a forma trabalhada, as regras adotadas e o cumprimento de seus reais objetivos. Assim, esperamos que essas análises e documentação aqui registrados, possam contribuir na realização de eventos futuros / Abstract: People with visual impairment have a delay in their motor development due to the lack of opportunities throughout life. Thus the importance of the practice of physical activities for this group of people since it contributes to their global development. The information drawn from the environment, the learning of gestures and motor skills contributes to the formation and motor development. Seeking to make these practices possible, especially the practice of Paralympic sports, the Brazilian Blind Sports Confederation ¿ CBDC held its 1st Brazilian School Games, for youngsters ¿ in school age - with visual impairment. The above mentioned event is the theme of our work and our objective is to study, evaluate and document the 1st Brazilian School Games held by the Brazilian Blind Sports Confederation in the city of São Paulo from November 12 to 15, 2004. The methodology used was descriptive research, more specifically a case study, and as research tools we used the documental analysis of reports, project and official letters of the CBDC related to the event. We analyzed and evaluated the technical and pedagogical process used in the sports of athletics, goalball, swimming, judo, football 5-a-side and chess, as well as the historical process of these sports in Brazil; the social-political role of the event to the associations affiliated to the CBDC, to the CBDC itself and to the Brazilian Paralympic Committee - CPB; and lastly the role of the institutions of higher education as agents that are influenced and influence cultural and sporting manifestations to and from society. We observed that the main characteristic of this event was to provide a ¿sporting experience¿ in some sports, respecting the pedagogical and technical conditions of the students/athletes. With respect to the historical process, although the event was not focused on elite level, the games contributed to the detection of new talents and therefore to the formation of grassroots athletes; we also noticed that the policies of the several sports entities involved were respected, that the CBDC and the CPB seek to fulfill their objectives and obligations with respect to the development of school sport events. From the analysis of the participation of higher education students we detected that these events have had increased the participation and involvement of universities, demonstrating that the subject of adapted sports is opening spaces for discussions in these institutions since they offer it in their graduation, master degree and specialization courses. Being the event here addressed the 1st School Games held by the CBDC many aspects deserve to be discussed, like for instance, its structure, the rules adopted and the fulfillment of its objectives. We expect that the analysis made and the documents here presented may contribute to the organization of future events of the same kind / Mestrado / Atividade Fisica, Adaptação e Saude / Mestre em Educação Física
5

MiniMatecaVox : aplicativo de ensino matemático para crianças deficientes visuais em fase de alfabetização / MiniMatecaVox : math teaching application aimed to visually impaired children in literacy phase

Souza, Henderson Tavares, 1982- 08 August 2014 (has links)
Orientador: Luiz César Martini / Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Elétrica e de Computação / Made available in DSpace on 2018-08-26T08:15:59Z (GMT). No. of bitstreams: 1 Souza_HendersonTavares_M.pdf: 4259997 bytes, checksum: eab29ec4039ecbc47399a90d3e377f9d (MD5) Previous issue date: 2014 / Resumo: Este trabalho de pesquisa apresenta o software MiniMatecaVox, este software dará subsídios para o ensino de matemática na fase de alfabetização de crianças deficientes visuais, sendo um recurso tecnológico que irá agregar valor na aprendizagem tanto matemática quanto na utilização de recursos computacionais. O MiniMatecaVox foi desenvolvido baseado nas práticas pedagógicas atuais do ensino de matemática e considerou no seu desenvolvimento as carências encontradas na literatura base desta pesquisa, assim, o software apresenta um ambiente lúdico e agradável para a criança contemplando ao mesmo tempo o ensino de matemática, inclusão digital e recreação das crianças em fase inicial escolar. Além do desenvolvimento deste software, foi proposta uma metodologia de ensino para utilização dos recursos do sistema com abordagens diferenciadas para potencializar o uso do MiniMatecaVox, com o propósito de alcançar melhores resultados na aprendizagem matemática. Os resultados desta pesquisa foram validados através da aplicação de uma Avaliação Heurística Participativa no instituto Jundiaiense Luiz Braille / Abstract: This research aims at introducing MiniMatecaVox software, which will provide subsidies for math teaching for the literacy phase of visually impairment children. It is a technological resource which will add value to math learning as well as computer resources use. MiniMatecaVox has been developed based on current pedagogical practices of maths teaching and it took into account in its development the dearth found in the literature base of this work, therefore, the software presents the children a ludic and pleasant environment providing them at the same time math teaching, digital inclusion and recreation in their education initial phase. Besides the development of this software, it has been proposed a teaching methodology to use the system resources with different approaches in order to empower the use of MiniMatecaVox, aiming at achieving better results in math teaching. The results of this research have been validated by a Participatory Heuristic Evaluation at Jundiaiense Luiz Braille Institute / Mestrado / Engenharia de Computação / Mestre em Engenharia Elétrica
6

Analýza záběrových pohybů plaveckého způsobu kraul u osob se zrakovým postižením / Analysis of stroking movements of crawl technique in persons with visual disabilities

Hájíček, Marek January 2020 (has links)
Title: Analysis of stroking movements of crawl technique in persons with visual disabilities. Complained by: Bc. Marek Hájíček Supervisor: Mgr. Daniel Jurák Ph.D. Objectives: The aim of the study was to determine differencees among swimming technique of visually impaired swimmers and fully health swimmers. Methods: To assess the technique of the crawl swimming method, we used a 50 m swimming test, which we recorded and subsequently evaluated using the SmartPaddles technology and application. Results: Based on the results, we can say that the biggest differences in the technique of VI and fully health swimmers we recorded in the number of strokes per minute, in the total speed and in the execution of the stroke curve with the right and left hand. Fully health swimmer evenly distributed muscle strength between the two arms, while a swimmer with a VI had trouble maintaining muscle strength throughout the stroking movement. We have found that for visually impaired swimmers, it is necessary to devote more time to training and mastering swimming techniques than for healthy swimmers. Keywords Swimming technique, crawl, visual impaired, SmartPaddles.
7

Cartografia tátil na educação básica: os cadernos de geografia e a inclusão de estudantes com deficiência visual na rede estadual de São Paulo / Tactile cartography in the regular teaching: Geography didactic materials and the inclusion of students with visual impairment in the State of São Paulo

Jordão, Barbara Gomes Flaire 21 September 2015 (has links)
O presente trabalho aborda a Cartografia Tátil como opção viável para a adaptação de materiais para o ensino de Geografia aos estudantes com deficiência visual matriculados na rede estadual de ensino de São Paulo, com destaque para análise dos cadernos do aluno adaptados pela Secretaria da Educação do Estado de São Paulo na versão braile e ampliada. Apresentamos as técnicas mais utilizadas para a produção de materiais em relevo, seus prós e contras para a adaptação de conteúdos da Geografia e da Cartografia. Foi incluído um estudo sobre os padrões de mapas táteis apresentados nacional e internacionalmente. Apresentamos e discutimos as experiências de professores e alunos que utilizam o material disponibilizado pelo Estado, bem como as opiniões de especialistas no tema. A fim de enfrentar além da inclusão educacional, mas a social, eliminando barreiras físicas e atitudinais, produzimos um caderno adaptado através dos preceitos específicos deste ramo da ciência e elaboramos uma proposta de exercício complementar que envolve esse campo de conhecimento e que possa ser aplicado numa sala de aula comum. Constatando as especificidades que abarcam a baixa visão, produzimos ainda um web aplicativo que auxilia na utilização dos cadernos, permitindo que o usuário use os recursos de ampliação, contraste e audiodescrição de acordo com sua necessidade. Os resultados foram obtidos através de entrevistas e de questionários realizados com os professores e alunos que de alguma forma vivenciam em seu cotidiano o embate da utilização de um material comum a todos e as especificidades do público com deficiência visual, buscando embasar a adoção de um recurso complementar ao que já é disponibilizado. Como resultados filosóficos temos a reflexão sobre a realidade dos mapas e sobre a política adotada pelo Estado. Na prática obtivemos um ensino de Geografia e Cartografia com representatividades para os alunos com deficiência, os demais alunos e para os professores, além da socialização dos conhecimentos adquiridos. Muito ainda precisa ser feito, esperamos que este trabalho sirva de incentivo para que a inclusão se perpetue no cerne da sociedade: a escola. / This paper approaches the Tactile Cartography as a viable option to the adaptation of material used to the Teaching of Geography to visual impaired students who attend the public school in the State of Sao Paulo. It foccusses on the analisis of the Caderno do Aluno (Student\'s Workbook) adapted by the Secretaria da Educação do Estado de São Paulo (Secretariat of Education of the State of Sao Paulo) in two versions: braille and enlarged pitures. In this study we present the most used techniques to the production of embossed materials, its pros and cons concerning the adaptation of Geography and Cartography contents. A study was included concerning patterns of tactile maps, nationally and internationally presented. We present and discuss the experiences of teachers and students who use the material given by the Government of the State, as well as the opinions of specialists on the subject. In order to stimulate not only the educational inclusion of those students, but also the social inclusion, eliminating the physical barrier and the barries of attitude, we have produced an adapted workbook making use of the precepts of this branch of Science and we have also elaborated a complementary exercise that encompasses this branch of knowledge and that can be implemented in a common classroom. Taking the specificities of the low sight impairment into account, we have produced an application system which assists students when using the workbooks, allowing the user to access tools of proper enlargement and contrast of the picture, as well as audiodescription according to his needs. The results were obtained through interviews and surveys with teachers and students who somehow live the daily confrontation between the use of a pedagogical material which is of common use in the classroon and the specificities of the visually impaired public. Therefore we have tried to base the adoption of a complementary material to the preexisting one supplied by the Government. As philosophical results we present the reflection about the reality of the use of maps and the policies adopted by the Government of the State concerning this matter. As practical results we have obtained a Teaching of Geography and Cartography that was representative to the visual impaired students, to the other students and to the teachers, besides the socialization of the knowledge they received. There is still a lot to be done and we hope this research can serve as an incentive so that the social inclusion can be perpetuated at the heart of society: the school.
8

Cartografia tátil na educação básica: os cadernos de geografia e a inclusão de estudantes com deficiência visual na rede estadual de São Paulo / Tactile cartography in the regular teaching: Geography didactic materials and the inclusion of students with visual impairment in the State of São Paulo

Barbara Gomes Flaire Jordão 21 September 2015 (has links)
O presente trabalho aborda a Cartografia Tátil como opção viável para a adaptação de materiais para o ensino de Geografia aos estudantes com deficiência visual matriculados na rede estadual de ensino de São Paulo, com destaque para análise dos cadernos do aluno adaptados pela Secretaria da Educação do Estado de São Paulo na versão braile e ampliada. Apresentamos as técnicas mais utilizadas para a produção de materiais em relevo, seus prós e contras para a adaptação de conteúdos da Geografia e da Cartografia. Foi incluído um estudo sobre os padrões de mapas táteis apresentados nacional e internacionalmente. Apresentamos e discutimos as experiências de professores e alunos que utilizam o material disponibilizado pelo Estado, bem como as opiniões de especialistas no tema. A fim de enfrentar além da inclusão educacional, mas a social, eliminando barreiras físicas e atitudinais, produzimos um caderno adaptado através dos preceitos específicos deste ramo da ciência e elaboramos uma proposta de exercício complementar que envolve esse campo de conhecimento e que possa ser aplicado numa sala de aula comum. Constatando as especificidades que abarcam a baixa visão, produzimos ainda um web aplicativo que auxilia na utilização dos cadernos, permitindo que o usuário use os recursos de ampliação, contraste e audiodescrição de acordo com sua necessidade. Os resultados foram obtidos através de entrevistas e de questionários realizados com os professores e alunos que de alguma forma vivenciam em seu cotidiano o embate da utilização de um material comum a todos e as especificidades do público com deficiência visual, buscando embasar a adoção de um recurso complementar ao que já é disponibilizado. Como resultados filosóficos temos a reflexão sobre a realidade dos mapas e sobre a política adotada pelo Estado. Na prática obtivemos um ensino de Geografia e Cartografia com representatividades para os alunos com deficiência, os demais alunos e para os professores, além da socialização dos conhecimentos adquiridos. Muito ainda precisa ser feito, esperamos que este trabalho sirva de incentivo para que a inclusão se perpetue no cerne da sociedade: a escola. / This paper approaches the Tactile Cartography as a viable option to the adaptation of material used to the Teaching of Geography to visual impaired students who attend the public school in the State of Sao Paulo. It foccusses on the analisis of the Caderno do Aluno (Student\'s Workbook) adapted by the Secretaria da Educação do Estado de São Paulo (Secretariat of Education of the State of Sao Paulo) in two versions: braille and enlarged pitures. In this study we present the most used techniques to the production of embossed materials, its pros and cons concerning the adaptation of Geography and Cartography contents. A study was included concerning patterns of tactile maps, nationally and internationally presented. We present and discuss the experiences of teachers and students who use the material given by the Government of the State, as well as the opinions of specialists on the subject. In order to stimulate not only the educational inclusion of those students, but also the social inclusion, eliminating the physical barrier and the barries of attitude, we have produced an adapted workbook making use of the precepts of this branch of Science and we have also elaborated a complementary exercise that encompasses this branch of knowledge and that can be implemented in a common classroom. Taking the specificities of the low sight impairment into account, we have produced an application system which assists students when using the workbooks, allowing the user to access tools of proper enlargement and contrast of the picture, as well as audiodescription according to his needs. The results were obtained through interviews and surveys with teachers and students who somehow live the daily confrontation between the use of a pedagogical material which is of common use in the classroon and the specificities of the visually impaired public. Therefore we have tried to base the adoption of a complementary material to the preexisting one supplied by the Government. As philosophical results we present the reflection about the reality of the use of maps and the policies adopted by the Government of the State concerning this matter. As practical results we have obtained a Teaching of Geography and Cartography that was representative to the visual impaired students, to the other students and to the teachers, besides the socialization of the knowledge they received. There is still a lot to be done and we hope this research can serve as an incentive so that the social inclusion can be perpetuated at the heart of society: the school.
9

Leitura musical na ponta dos dedos : caminhos e desafios do ensino de musicografia Braille na perspectiva de alunos e professores / Music finger reading

Bonilha, Fabiana Fator Gouvea 31 January 2006 (has links)
Orientador: Claudiney Rodrigues Carrasco / Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Artes / Made available in DSpace on 2018-08-06T06:49:42Z (GMT). No. of bitstreams: 1 Bonilha_FabianaFatorGouvea_M.pdf: 1327152 bytes, checksum: ff750ed1d58c4a62354dbb43f2a65d0d (MD5) Previous issue date: 2006 / Resumo: O presente estudo foi motivado pela experiência pessoal de sua autora,musicista com deficiência visual. Ele aborda aspectos referentes ao ensino da Musicografia Braille, que por sua vez, consiste na notação musical criada por Louis Braille para uso de pessoas cegas. A partir de um enfoque qualitativo, buscou-se investigar a percepção de estudantes de Música com deficiência visual e de seus respectivos professores acerca das condições atuais de aplicação da Musicografia Braille ao campo da educação musical. Por meio de entrevistas e questionários, os sujeitos relataram suas experiências, a partir das quais se pôde estabelecer um panorama sobre o ensino desse sistema de escrita. Para análise dos dados, foi utilizada a técnica de formulação do Discurso do Sujeito Coletivo, que visa apreender os pensamentos e as crenças comuns a uma dada população. Os dados colhidos foram discutidos mediante o stabelecimento de categorias e subcategorias concebidas a partir dos depoimentos. Nesse estudo, buscou-se também investigar e avaliar as ferramentas tecnológicas atualmente utilizadas para a produção de partituras em Braille e, de acordo com essa avaliação, foram criados procedimentos que otimizassem a transcrição de obras musicais. Com base na realização desse estudo, concluiu-se que, na atualidade, há muitos obstáculos que impedem o acesso ao ensino da Musicografia Braille, dos quais decorre a grande desinformação por parte de alunos e professores. Apontou-se para a necessidade de uma maior difusão da notação musical em Braille, tanto através de novas produções acadêmicas, quanto através de iniciativas que facilitem a implantação de acervos musicais transcritos para esse Sistema / Abstract: The current study was motivated by the author's life experience being both blind and a musician. It covers different aspects of Braille Music Writing, which is the musical notation created by Louis Braille for blind musicians. Using a qualitative approach, this study investigates the opinion of blind music students and their teachers regarding the current application of Braille Music Writing in musical education. Subjects described their experiences with Braille Music Writing through interviews and questionnaires, enabling the researcher to establish a panorama of music teaching in Braille. Data was analyzed using the technique of formulation of the General Subject Discourse that aims to extract and summarize thoughts and beliefs of a given population. Subjects' opinions were divided into categories and results were drawn from each category. In his study, the author also investigated current technological tools commonly used to produce Braille music sheets, and created a protocol to optimize musical transcription into Braille. The author concluded that there are many obstacles that currently obstruct the access of blind students and their professors to Braille Music Writing, and therefore generates misinterpretation of its potential and usage. As a consequence, the author emphasizes the need for diffusion of information regarding Braille Music writing both through its use within the university and the establishment of Braille music sheets libraries / Mestrado / Mestre em Música
10

Assistance visuelle des malvoyants par traitement d’images adaptatif / Visual assistance of visual impaired people by adaptive image processing

Froissard, Benoit 27 February 2014 (has links)
Cette thèse s’inscrit dans le cadre de l’analyse des besoins de personnes malvoyantes dans le but de développer de nouvelles solutions d’assistance visuelle en utilisant le principe de réalité augmentée. Le principal objectif de ces travaux était le développement d’un dispositif d’assistance visuelle pour faciliter la mobilité de personnes malvoyantes grâce à un algorithme qui en temps réel adapte sa réponse en fonction des besoins de l’utilisateur et de la situation dans laquelle il évolue. Le premier postulat de cette thèse est d’utiliser l’acuité résiduelle fonctionnelle des malvoyants afin de leur permettre de percevoir un certain nombre d’informations. Le second postulat est d’utiliser les seules informations pertinentes, utiles à un malvoyant, afin d’améliorer sa perception du monde dans lequel il évolue. Le premier axe de recherche a consisté à analyser les besoins des malvoyants afin de recenser, les indices visuels utiles à rehausser afin d’améliorer la perception des malvoyants. Cette étude a été réalisée en immersion et une enquête précise a été menée auprès de malvoyants. Cette étude permet de mieux comprendre les besoins des malvoyants, les méthodes qu’ils utilisent ainsi que leurs usages des dispositifs actuels. Le deuxième axe de recherche a consisté à concevoir et à mettre en oeuvre un algorithme de traitement d’images répondant aux besoins identifiés. Un outil interactif a été développé qui permet de sélectionner la quantité de contours en fonction de la situation. Ce détecteur de contour optimise sa détection afin d’obtenir des contours plus exploitables pour les malvoyants, comparés aux résultats des autres méthodes de l’état de l’art. Cet outil a été testé et validé auprès d’une population donnée de personnes malvoyantes. Ces tests réalisés sur écran ont démontré que les contours constituent des indices visuels très importants qui peuvent être d’une grande aide dans l’analyse d’une scène. Le troisième axe de travail a consisté au développement d’un système de réalité augmentée permettant d’utiliser ce détecteur de contours dans un contexte de mobilité. L’analyse des besoins des malvoyants vis-à-vis d’un tel dispositif nous a permis de définir les caractéristiques indispensables pour le système de calcul, la caméra et le dispositif d’affichage. Concernant le système d’affichage, l’analyse des besoins des malvoyants en termes de profil, de couleur, de largeur des contours, nous a permis de définir les paramètres nécessaires pour un affichage qui répond à ces besoins. Il a également été pris en compte dans les développements les paramètres physiologiques de chaque observateur afin que les images affichées soient visuellement confortables / This thesis was done in the context of visual impaired needs analysis with the goal of new augmented reality visual assistance device development. The main goal of this work was the development of assistive device for mobility of visual impaired people by the use real-time image processing algorithm which take into account user needs and the context. The first postulate is the use of residual visual acuity of visual impaired people to allow them to see more information. The second postulate is the use only most useful information for visual impaired people for the understanding of the situation where are they. The first research axis was an analysis of needs of visual impaired to identify visual cues, which one we need to enhance to help them. To do this, I have done an immersive stage into a re-adaptation clinic for visually impaired. I have also done a questionnaire to identify and understand how current products answers partially to their needs. The second research axis was the development of a new image processing to answer identified needs. I have developed an interactive tools that allow the user to select the amount of edges for each situation, context. This detector optimizes its result to provide better results than others state of the art evaluated methods. This tool was evaluated and validated during visual test by visual impaired people. We have demonstrated that edges are one of the most important visual cues for visual impaired people to analyze a scene. The third research axis was the development of the augmented reality system to use my tool in a context of mobility. To do this, I have analyzed the needs of visual impaired people for this type of devices. I have also defined main requirements of the desired device for the processing unit, the camera and the display module. For display module, I have analyzed physiologic needs of visually impaired, in terms of profile, colors, and thickness to answer their needs. I have also developed an image generation model which takes into account many physiologic parameters of each observer to create visually comfortable images

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