2019-08-292019-08-292010SANTOS, Diogo Corrêa. Mapeamento de ambientes da planície costeira de Soure (Ilha de Marajó) a partir de imagens Ikonos: uma abordagem de classificação orientada a objeto. 2010. 62 f. Trabalho de Curso (Bacharelado em Geologia) – Faculdade de Geologia, Instituto de Geociências, Universidade Federal do Pará, Belém, 2010. Disponível em: http://bdm.ufpa.br/jspui/handle/prefix/1710. Acesso em:.http://bdm.ufpa.br/jspui/handle/prefix/1710An Ikonos II image carried out at the Soure Coastal Plain (Marajó Island) revealed numerous coastal features over coastal plateaus and coastal plain. The principal goal of this study is to assess the coastal features mapping from segmentation and classification techniques. In this paper we present a semi-automated, object-based method for Ikonos multiespectral image classification, which emphasizes context information. The study site is compartmentalized in two geomorphologic units: i) coastal plateaus, with subunits sand roads, built áreas, deforested área with grasses and urban vegetation ; and ii) coastal plain, with subunits freshmarshesm old Sandy ridge, beach, mangrove, mangrove scarp, flooded área, water. The validation of Ikonos image classification shows that the proposed method can delineate coastal features with more than 90% producer’s and user’s accuracy. The Kappa index is 94% and the global classification accuracy is 95%. The analysis shows an increase is classification accuracy due to integrate espectral and spatial attributes of the objects (coastal features) to be classified.Acesso AbertoSensoriamento remotoResolução espacialPlanície costeiraIkonos IICNPQ::CIENCIAS EXATAS E DA TERRA::GEOCIENCIAS::GEOLOGIATrabalho de Curso - Graduação - Monografia