Avaliação de técnicas de processamento digital de imagens TM-Landsat aplicadas a delimitações de áreas urbanas / Evaluation of digital processing techniques of TM/Landsat imagery applied to urban area demarcation

AUTOR(ES)
DATA DE PUBLICAÇÃO

1989

RESUMO

The orbital remote sensing can be used to help urban studies, owing to the possibility of obtaining images of regional ambit and quasi-real time information, allowing the limits definition and urban monitoring. In this work we used Thematic Mapper Sensor (TM) data, in CCT, of Sao José dos Campos city, São Paulo State, to: 1) identify the best band of TM sensor, through JM distance, in the separability between the urban and non-urban areas; 2) select, through Kappa statistics, among the digital processing techniques, contrast-stretch, channel ratio, vegetation index and principal components, the one that best defines the urban limits. The dry season (06/08/80) and the wet season (09/12/85) were analysed. The results obtained proved that band, in the dry season, and band 3, in the wet season, had the best performance in the separability of urban/non-urban categories. The principal components technique presented the great values of agreement with the standard image in definition of the urban limit.

ASSUNTO(S)

cities planejamento urbano imagens landsat áreas urbanas vegetative index cidades mapeador temático (landsat) índice de vegetação annual variations thematic mappers (landsat) são josé cmpos (sp) satélites landsat urban areas urban planning

ACESSO AO ARTIGO

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