Title:	Mapeamento de uso e ocupação do solo e detecção dos impactos ambientais utilizando imagens ASTER na bacia hidrográfica do Córrego do Atoleiro - Distrito Federal.
Authors:	FARIAS, M. F. R. CARVALHO JUNIOR, O. A. de MARTINS, E. de S. GUIMARÃES, R. F. GOMES, R. A. T. OLIVEIRA, S. N. de SILVA, A. V. da SILVA, M. R. da OLIVEIRA, O. R. de SILVA, R. de M.
Affiliation:	MARCUS FÁBIO RIBEIRO FARIAS, UNIVERSIDADE DE BRASÍLIA; OSMAR ABÍLIO DE CARVALHO JÚNIOR, UNIVERSIDADE DE BRASÍLIA; EDER DE SOUZA MARTINS, CPAC; RENATO FONTES GUIMARÃES, UNIVERSIDADE DE BRASÍLIA; ROBERTO ARNALDO TRANCOSO GOMES, UNIVERSIDADE DE BRASÍLIA; SANDRO NUNES DE OLIVEIRA, UNIVERSIDADE DE BRASÍLIA; ANGELO VALVERDE DA SILVA, UNIVERSIDADE DE BRASÍLIA; MIRIAM RODRIGUES DA SILVA, UNIVERSIDADE DE BRASÍLIA; ORLEI ROFINO DE OLIVEIRA, UNIVERSIDADE ESTADUAL DE GOIÁS; RICARDO DE MORAES SILVA, UNIVERSIDADE ESTADUAL DE GOIÁS.
Date Issued:	2007
Citation:	In: SIMPÓSIO BRASILEIRO DE SENSORIAMENTO REMOTO, 13., 2007, Florianópolis. Anais... Florianópolis: INPE; SELPER, 2007.
Pages:	p. 3861-3868
Description:	ABSTRACT - The objective of this paper is to analyze agricultural and urban landscape patterns of the Atoleiro basin, next to the Planaltina city located at Federal District. The methodology used can be divided in three stages: (a) preprocessing, (b) endmembers identification and (c) Spectral Angle Mapper (SAM). The images were acquired with atmosphere correction from AST07 product. The Level 2 surface reflectance data set (AST07) contains surface reflectance for all of the nine VNIR and SWIR bands at 15-m and 30-m resolutions, respectively. Endmembers were detected from three steps: (a) spectral reduction by the Minimum Noise Fraction (MNF) transformation, (b) spatial reduction by the Pixel Purity Index (PPI) and (c) manual identification of the endmembers using the N-dimensional visualizer. The spectral classification was done using the Spectral Angle Mapper (SAM). The scene is classified in seven classes: urban, bared soil, agriculture, grassland, savanna and riparian vegetation.
Thesagro:	Bacia Hidrográfica Impacto Ambiental Sensoriamento Remoto Solo Uso da Terra
NAL Thesaurus:	Land use Landscapes Remote sensing
Keywords:	Imagem ASTER
Type of Material:	Artigo em anais e proceedings
Access:	openAccess
Appears in Collections:	Artigo em anais de congresso (CPAC)