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mieec.toc
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\select@language {portuges}
\contentsline {chapter}{Agradecimentos}{v}{chapter*.3}
\contentsline {chapter}{\numberline {1}Introdu\IeC {\c c}\IeC {\~a}o}{1}{chapter.1}
\contentsline {section}{\numberline {1.1}Contexto}{1}{section.1.1}
\contentsline {section}{\numberline {1.2}Motiva\IeC {\c c}\IeC {\~a}o}{2}{section.1.2}
\contentsline {section}{\numberline {1.3}Objetivos}{2}{section.1.3}
\contentsline {section}{\numberline {1.4}Estrutura do documento}{2}{section.1.4}
\contentsline {chapter}{\numberline {2}Conceitos e Trabalhos Relacionados}{5}{chapter.2}
\contentsline {section}{\numberline {2.1}Clustering}{5}{section.2.1}
\contentsline {subsection}{\numberline {2.1.1}Clustering por Parti\IeC {\c c}\IeC {\~a}o}{6}{subsection.2.1.1}
\contentsline {subsection}{\numberline {2.1.2}Clustering Hier\IeC {\'a}rquico}{7}{subsection.2.1.2}
\contentsline {subsection}{\numberline {2.1.3}Clustering Baseado em Densidade}{9}{subsection.2.1.3}
\contentsline {subsection}{\numberline {2.1.4}Clustering Baseado em Grelhas}{9}{subsection.2.1.4}
\contentsline {subsection}{\numberline {2.1.5}Fun\IeC {\c c}\IeC {\~o}es de Dist\IeC {\^a}ncia}{10}{subsection.2.1.5}
\contentsline {subsubsection}{\numberline {2.1.5.1}Atributos Num\IeC {\'e}ricos}{11}{subsubsection.2.1.5.1}
\contentsline {subsubsection}{\numberline {2.1.5.2}Atributos Bin\IeC {\'a}rios e Nominais}{11}{subsubsection.2.1.5.2}
\contentsline {subsubsection}{\numberline {2.1.5.3}Dimens\IeC {\~a}o Temporal}{13}{subsubsection.2.1.5.3}
\contentsline {subsubsection}{\numberline {2.1.5.4}Dimens\IeC {\~a}o Espacial}{13}{subsubsection.2.1.5.4}
\contentsline {section}{\numberline {2.2}TweeProfiles}{13}{section.2.2}
\contentsline {subsection}{\numberline {2.2.1}Descri\IeC {\c c}\IeC {\~a}o e objetivos}{13}{subsection.2.2.1}
\contentsline {subsection}{\numberline {2.2.2}Resultados ilustrativos}{14}{subsection.2.2.2}
\contentsline {subsection}{\numberline {2.2.3}Pr\IeC {\'o}s e contras}{16}{subsection.2.2.3}
\contentsline {section}{\numberline {2.3}Representa\IeC {\c c}\IeC {\~a}o de Informa\IeC {\c c}\IeC {\~a}o Visual}{17}{section.2.3}
\contentsline {subsection}{\numberline {2.3.1}Representa\IeC {\c c}\IeC {\~a}o Matricial}{18}{subsection.2.3.1}
\contentsline {subsection}{\numberline {2.3.2}Histogramas}{18}{subsection.2.3.2}
\contentsline {subsection}{\numberline {2.3.3}Descritores de Cor}{19}{subsection.2.3.3}
\contentsline {subsubsection}{\numberline {2.3.3.1}Espa\IeC {\c c}os de Cor}{19}{subsubsection.2.3.3.1}
\contentsline {subsubsection}{\numberline {2.3.3.2}Cor Dominante}{20}{subsubsection.2.3.3.2}
\contentsline {subsubsection}{\numberline {2.3.3.3}Cor Escal\IeC {\'a}vel}{20}{subsubsection.2.3.3.3}
\contentsline {subsubsection}{\numberline {2.3.3.4}Estrutura de Cor}{21}{subsubsection.2.3.3.4}
\contentsline {subsection}{\numberline {2.3.4}Descritores de Textura}{21}{subsection.2.3.4}
\contentsline {subsubsection}{\numberline {2.3.4.1}Descritor de Textura Homog\IeC {\'e}nea}{21}{subsubsection.2.3.4.1}
\contentsline {subsubsection}{\numberline {2.3.4.2}Descritor de Histograma de Borda}{22}{subsubsection.2.3.4.2}
\contentsline {subsection}{\numberline {2.3.5}Descritores de Forma}{22}{subsection.2.3.5}
\contentsline {subsubsection}{\numberline {2.3.5.1}Descritor de Forma Baseado em Regi\IeC {\~a}o}{22}{subsubsection.2.3.5.1}
\contentsline {subsubsection}{\numberline {2.3.5.2}Descritor de Forma Baseado no Contorno}{22}{subsubsection.2.3.5.2}
\contentsline {subsection}{\numberline {2.3.6}Descritores Locais}{23}{subsection.2.3.6}
\contentsline {subsubsection}{\numberline {2.3.6.1}SIFT}{23}{subsubsection.2.3.6.1}
\contentsline {subsubsection}{\numberline {2.3.6.2}SURF}{27}{subsubsection.2.3.6.2}
\contentsline {subsection}{\numberline {2.3.7}Descritores Locais Bin\IeC {\'a}rios}{27}{subsection.2.3.7}
\contentsline {subsection}{\numberline {2.3.8}Descritores Baseado em Vocabul\IeC {\'a}rio Visual}{28}{subsection.2.3.8}
\contentsline {chapter}{\numberline {3}Olh\IeC {\'o}-passarinho: M\IeC {\'o}dulo do Conte\IeC {\'u}do Visual}{31}{chapter.3}
\contentsline {section}{\numberline {3.1}Recolha dos Dados}{31}{section.3.1}
\contentsline {subsection}{\numberline {3.1.1}Descri\IeC {\c c}\IeC {\~a}o dos Dados}{31}{subsection.3.1.1}
\contentsline {subsection}{\numberline {3.1.2}Filtragem dos Dados}{32}{subsection.3.1.2}
\contentsline {subsection}{\numberline {3.1.3}Conjunto de Dados Final}{33}{subsection.3.1.3}
\contentsline {section}{\numberline {3.2}Extra\IeC {\c c}\IeC {\~a}o, Processamento e Armazenamento da Informa\IeC {\c c}\IeC {\~a}o Visual}{34}{section.3.2}
\contentsline {subsection}{\numberline {3.2.1}Extra\IeC {\c c}\IeC {\~a}o dos Pontos de Interesse e Descritores Locais}{35}{subsection.3.2.1}
\contentsline {subsection}{\numberline {3.2.2}Cria\IeC {\c c}\IeC {\~a}o do Vocabul\IeC {\'a}rio Visual}{36}{subsection.3.2.2}
\contentsline {subsection}{\numberline {3.2.3}Armazenamento da Informa\IeC {\c c}\IeC {\~a}o Visual}{37}{subsection.3.2.3}
\contentsline {section}{\numberline {3.3}Matriz de Dist\IeC {\^a}ncias entre Imagens}{38}{section.3.3}
\contentsline {chapter}{\numberline {4}Olh\IeC {\'o}-passarinho: Aplica\IeC {\c c}\IeC {\~a}o Web}{39}{chapter.4}
\contentsline {section}{\numberline {4.1}Arquitetura do Sistema}{39}{section.4.1}
\contentsline {section}{\numberline {4.2}Informa\IeC {\c c}\IeC {\~a}o Espa\IeC {\c c}o-Temporal}{40}{section.4.2}
\contentsline {section}{\numberline {4.3}Clustering da Informa\IeC {\c c}\IeC {\~a}o Visual, Espacial e Temporal}{41}{section.4.3}
\contentsline {section}{\numberline {4.4}Visualiza\IeC {\c c}\IeC {\~a}o}{41}{section.4.4}
\contentsline {section}{\numberline {4.5}Resultados Ilustrativos}{43}{section.4.5}
\contentsline {section}{\numberline {4.6}Sum\IeC {\'a}rio}{46}{section.4.6}
\contentsline {chapter}{\numberline {5}Conclus\IeC {\~o}es e Trabalho Futuro}{49}{chapter.5}
\contentsline {section}{\numberline {5.1}Resumo}{49}{section.5.1}
\contentsline {section}{\numberline {5.2}Discus\IeC {\~a}o e trabalho futuro}{50}{section.5.2}
\contentsline {chapter}{\numberline {A}Tabela da Base de Dados para Sele\IeC {\c c}\IeC {\~a}o de Tweets}{53}{appendix.A}
\contentsline {chapter}{\numberline {A}Exemplo objeto JSON de um tweet}{55}{appendix.A}
\contentsline {chapter}{Refer\^{e}ncias}{61}{section*.43}