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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

應用脈絡分析於銀髮族數位影像之使用者研究 / Applying Contextual Design in Personal Digital Photograph User Research

麥圃鳴, Mai, Pu Ming Unknown Date (has links)
本研究以銀髮族為主要的研究對象,採用脈絡分析法了解銀髮族於日常生活中的影像使用行為,經由在受訪者住所進行的深度訪談與行為觀察,探究數位影像與銀髮族的關連,日常生活的影像使用行為,與數位影像工具對銀髮族使用數位影像的影響。根據對銀髮族的影像使用行為與影像工具和情境故事的彙整,本研究歸納出三種銀髮族影像使用行為的核心價值,分別為分享、典藏和記錄。   此外研究中對使用影像行為的過程與不同使用工具的詮釋,也說明了不同影像工具因功能條件限制,為高齡使用者帶來的使用障礙與排斥使用的現象。根據本研究對銀髮族使用影像行為的活動脈絡,與針對情境故事進行的脈絡分析,所提出相關影像活動使用工具的設計建議與銀髮族影像服務未來的發展方向,將使未來的數位影像相關產品服務,更貼近年長使用者的生活需求。 / Through the contextual inquiries, understanding about the present usage and motivation of older people toward digital photography in their ordinary life are revealed. According to these scenarios from deep interviews and field observation, three different core values of photo usage behaviors to older people are identified, including sharing, archiving and recording.   Besides, the differences between photo usage behaviors and tools in these uses help us explain the obstacle of photo usage and the difficulties for adopting photography of mobile device by older people. Based on the knowledge above, proposing concrete directions of developing the applications of future digital photo technologies that actually fit in with older user’s needs are pointed out.
2

Anotação automática e semiautomática de pessoas em fotografias digitais utilizando eventos compartilhados. / Automatic and semi-automatic annotation of people in digital photographs using shared events.

FIRMINO, Anderson Almeida. 30 July 2018 (has links)
Submitted by Johnny Rodrigues (johnnyrodrigues@ufcg.edu.br) on 2018-07-30T18:46:14Z No. of bitstreams: 1 ANDERSON ALMEIDA FIRMINO - DISSERTAÇÃO PPGCC 2017..pdf: 8815289 bytes, checksum: e3b4911b743f18579e5834eb56c197a3 (MD5) / Made available in DSpace on 2018-07-30T18:46:14Z (GMT). No. of bitstreams: 1 ANDERSON ALMEIDA FIRMINO - DISSERTAÇÃO PPGCC 2017..pdf: 8815289 bytes, checksum: e3b4911b743f18579e5834eb56c197a3 (MD5) Previous issue date: 2017-07-02 / Diante da popularização de smartphones e dispositivos fotográficos, é fato que as fotografias digitais têm se tornado parte do cotidiano. Milhões de fotos são adicionadas diariamente em redes sociais, como Facebook e Instagram. Diante de isso, tem-se a seguinte questão: "Como gerenciar tamanho acervo de fotos?" Para o usuário, isto não é uma tarefa simples. Para auxiliá-lo na resolução dessa questão, se faz necessário o uso de anotações em fotografias, as quais podem conter informações de localização, data, hora e tags de conteúdo. Para o usuário, a identificação das pessoas presentes na cena é considerada a informação mais importante, permitindo que ele se recorde da fotografia. Por outro lado, utilizar o conceito do evento a qual uma fotografia pertence é uma forma de otimizar a organização de fotografias. Neste trabalho, propõe-se verificar se o conceito de evento compartilhado, o qual consiste em diversas pessoas com smartphones e dispositivos fotográficos participando de um mesmo evento, traz algum incremento na taxa de acerto na anotação de pessoas em fotografias digitais de maneira automática e semiautomática. Para a anotação automática de pessoas, foram utilizados algoritmos de detecção e reconhecimento de faces; e para a anotação semiautomática de pessoas, foram utilizados estimadores baseados nas informações de contexto das fotografias (como localização geográfica, por exemplo) e de conteúdo (como as faces detectadas, por exemplo). Os experimentos realizados apresentaram bons resultados, demonstrando assim que a utilização do conceito de evento compartilhado aumenta a taxa de acerto para a anotação automática e para a anotação semiautomática de pessoas em fotografias digitais / Faced with the popularization of smartphones and photographic devices, it is a fact that digital photographs have become part of daily life. Millions of photos are added daily on social networks such as Facebook and Instagram. Faced with this, one has the following question: "How to manage huge photo collections?" For the user, this is not a simple task. To assist in resolving this issue, it is necessary to use photo annotations, which may contain location information, date, time, and content tags. For the user, identifying the people present in the scene is considered the most important information, allowing him to remember the photograph. On the other hand, using the concept of the event to which a photograph belongs is a way of optimizing the organization of photographs. In this work, it is proposed to verify if the concept of shared event, which consists of several people with smartphones and photographic devices participating in the same event, brings some increase in the hit rate in annotating people in digital photographs in an automatic and semi-automatic way. For the automatic people annotation, we used algorithms of face detection and recognition; and for the semi-automatic people annotation, estimators based on the context information of the photographs (such as geographic location, for example) and content (such as detected faces, for example) were used. The experiments performed showed good results, thus demonstrating that the use of the concept of shared event increases the hit rate for both people automatic and semiautomatic annotation of in digital photographs.

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