%0 Conference Proceedings
%4 sid.inpe.br/iris@1912/2005/07.18.22.27.48
%2 sid.inpe.br/iris@1912/2005/07.18.22.27.56
%F 392
%T Landsat-TM data to map flooded areas
%D 1988
%A Pinto, Sergio dos Anjos Ferreira,
%A Florenzano, Teresa Gallotti,
%B International Congress of Photogrammetry and Remote Sensing, 16.
%C Kyoto, Japan
%8 1-10 July 1988
%P 535-537
%1 ISPRS
%K ESTUDOS INTEGRADOS DO MEIO AMBIENTE, RIO PARNAIBA, INUNDACAO, LAMINA D'AGUA, TM LANDSAT, MAXIMA VEROSSIMILHANCA, MAPEADOR TEMATICO (LANDSAT), IMAGENS LANDSAT, FLOODS, WATER SURFACE.
%X The objective of this study is to identify flooded areas using digital LANDSAT-TM data. The test site is a section along the Parnaiba river (NE of Brazil). By means of digital processing, one analyses the spectral separability of the classes, which are characterized by the presence of water surface with different intensities of a pixel in the near infrared band (4). A Density Slicing algorithm is applied for this purpose. The multitemporal analysis of the data is accomplished through the merging of the band 4 images corresponding to normal and flood periods. After this procedure, a maximum likelihood algorithm is applied in both images. The Density Slicing is also applied in multitemporal difference of the image (band-4-normal minus band-4-flood). A comparative analysis of the digital processing techniques using TM data to study flooded areas is presented.
%3 INPE 4594.pdf