Classificação de uso do solo urbano através da análise linear de mistura espectral com imagens de satélite

Authors

  • Jorge Rocha
  • José António Tenedório
  • Rossana Estanqueiro
  • Paulo Morgado Sousa

DOI:

https://doi.org/10.18055/Finis1438

Abstract

Os ambientes urbanos são heterogéneos, sendo útil simplificá-losem combinações de materiais básicos de uso e ocupação do solo a fim de permitirestudos quantitativos. O modelo VIS proposto por Ridd em 1995 é um modelo conceptual que permite simplificar ambientes urbanos através da combinação de trêscomponentes básicos: vegetação (V), superfície impermeável (I) e solo (S). A maioria dos usos urbanos pode ser interpretada à luz de combinações destes três componentes básicos. A análise da composição do VIS permite revelar que a maioria dascaracterísticas urbanas tem a sua própria composição original destes três factores, aqual é difícil de observar através dos métodos de classificação de imagens de saté-lite que operam ao nível do pixel. Este trabalho examina as características das classes de uso e ocupação do solo urbano na Grande Área Metropolitana de Lisboa(GAML) utilizando técnicas de classificação baseadas no sub-pixel, nomeadamentea Análise de Mistura Espectral (AME), desenvolvendo um modelo conceptual paracaracterizar os padrões de ocupação, sendo explorada e testada a aplicabilidade daAME para medir a composição física da morfologia urbana, através de imagens multiespectrais Landsat 7 ETM+ e SPOT 5 HRVIR, avaliando, ao mesmo tempo, o efeitoque as diferenças de resolução espacial podem ter nos resultados obtidos.

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How to Cite

Rocha, J., Tenedório, J. A., Estanqueiro, R., & Sousa, P. M. (2007). Classificação de uso do solo urbano através da análise linear de mistura espectral com imagens de satélite. Finisterra, 42(83). https://doi.org/10.18055/Finis1438

Issue

Vol. 42 No. 83 (2007)

Section

Articles

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