@InProceedings{DamascenaMace:2011:AvDeSu,
               author = "Damascena, Leilton Santos and Macedo, Luiz Rog{\'e}rio de Lima",
          affiliation = "{Universidade Estadual de Feira de Santana - UEFS} and 
                         {Universidade Estadual de Feira de Santana - UEFS}",
                title = "Avalia{\c{c}}{\~a}o da delimita{\c{c}}{\~a}o subfisionomica da 
                         caatinga a partir da aplica{\c{c}}{\~a}o de an{\'a}lise 
                         discriminante em valores de reflect{\^a}ncia de imagem do sensor 
                         Landsat TM 5",
            booktitle = "Anais...",
                 year = "2011",
               editor = "Epiphanio, Jos{\'e} Carlos Neves and Galv{\~a}o, L{\^e}nio 
                         Soares",
                pages = "4382--4389",
         organization = "Simp{\'o}sio Brasileiro de Sensoriamento Remoto, 15. (SBSR).",
            publisher = "Instituto Nacional de Pesquisas Espaciais (INPE)",
              address = "S{\~a}o Jos{\'e} dos Campos",
             keywords = "Spectral variation, Caatinga, Discriminant Analysis, 
                         Varia{\c{c}}{\~a}o espectral, Caatinga, An{\'a}lise 
                         Discriminante.",
             abstract = "The objective that guided this study was to evaluate changes in 
                         spectral subformations Savannah Steppe (Caatinga) and areas of 
                         irrigated agriculture bounded by Veloso (1991) from a technical 
                         application of multivariate statistical analysis (discriminant 
                         analysis), with the objective of verifying the possibilities of 
                         separation of these categories in periods of drought. For its 
                         development we used a LANDSAT 5 TM, orbit 216, Item 066, date 
                         20/11/2009, converted to physical values of reflectance to unify 
                         the scale of the bands. Data collection was performed by guiding 
                         the mapping PROBIO (Conservation and Sustainable Use of Biological 
                         Diversity) for choosing the sample areas. The pixels chosen were 
                         selected by the operator using the following criteria: i) the more 
                         central areas of the class ii) areas not visually degraded, or 
                         iii) areas known in the field. The results from the application of 
                         discriminant analysis showed a real differentiation between 
                         categories. On the other hand, have accused some pixels near 
                         boundaries of other categories, probably due to leaf fall pattern 
                         of the vegetation types. The bands that best discriminate the 
                         categories analyzed in this work were the first band, band 2, band 
                         3 of Landsat 5 TM, covering the entire visible spectrum. 
                         Unexpectedly contrasting the importance of using the infrared 
                         bands for the classification of vegetation types.",
  conference-location = "Curitiba",
      conference-year = "30 abr. - 5 maio 2011",
                 isbn = "{978-85-17-00056-0 (Internet)} and {978-85-17-00057-7 (DVD)}",
             language = "pt",
         organisation = "Instituto Nacional de Pesquisas Espaciais (INPE)",
                  ibi = "3ERPFQRTRW/3A48SGP",
                  url = "http://urlib.net/ibi/3ERPFQRTRW/3A48SGP",
           targetfile = "p0822.pdf",
                 type = "An{\'a}lise Florestal e Vegeta{\c{c}}{\~a}o",
        urlaccessdate = "16 jun. 2024"
}