2020-01-102020-01-102013-09CONCEIÇÃO, Raimundo Almir Costa da. Utilização de produtos de sensores remotos para detecção de coberturas lateríticas na região de Canaã dos Carajás (PA), através da classificação orientada a objeto. Orientador: Arnaldo de Queiroz da Silva. 2013. 61 f. Trabalho de Curso (Bacharelado em Geologia) - Faculdade de Geologia, Instituto de Geociências, Universidade Federal do Pará, Belém, 2013. Disponível em: https://bdm.ufpa.br/jspui/handle/prefix/2762. Acesso em:.https://bdm.ufpa.br/jspui/handle/prefix/2762This work presents the results obtained from the use of Landsat-5/TM, PALSAR/ALOS and Digital Elevation Model (DEM) images, applied to the mapping of lateritic covers in the town of Canaã dos Carajas - PA, through object oriented classification. Lateritic covers of humid tropical regions are geological units of interest for mineral prospecting and the development of remote sensing enables these coverages to be mapped in a more systematic and accelerated way. To map lateritic covers and evaluate viable sensors products for the establishment of a methodology of classification were used bands 3, 4, 5 from Landsat-5/TM satellite, the Normalized Difference Vegetation Index (NDVI), the HH and HV bands from PALSAR/ALOS satellite and SRTM-DEM. Were applied in these images the object oriented classification, which uses the segmentation technique to transform images in objects (segments), in which pixels have the same spectral characteristics. The classification process of Landsat-5/TM images was performed through levels. At level 1, occurred the classification of vegetation and no vegetation. At level 2 it was separated non vegetation in constructed area, mining complex and soil. At level 3, it was gave a breakdown of lateritic coverages from soil. Descriptors and thresholds used for the classification of laterites were: average brightness (42 to 83.88), mean reflectance of band 3 (32-57) and mean NDVI (0.2 to 0.42). From the DEM, it was found that laterites show values between 100 and 200 meters in elevation, plan to wavy relief, indicating the presence of immature laterites (Pleistocene). Others, less representative in area, are at higher altitudes (600 to 738m) at the top of some ridges. These, in turn, can be related with older mature laterites (Eoceno - Oligocene). Although it may contain classification errors and confusion with other classes, the classification was considered satisfactory and the object oriented classification technique has shown considerable promise in the differentiation of lateritic cover.Acesso AbertoSensoriamento remotoClassificação Orientada a ObjetoLateritasCanaã dos Carajás - PACNPQ::CIENCIAS EXATAS E DA TERRA::GEOCIENCIAS::GEOLOGIATrabalho de Curso - Graduação - Monografia