@InProceedings{RezendeMarqRosa:2017:UsDaSe,
               author = "Rezende, Patr{\'{\i}}cia Soares and Marques, Daniela Vieira and 
                         Rosa, Roberto",
                title = "Uso de dados do Sentinel-2 para c{\'a}lculo de NDVI com base nos 
                         valores da reflet{\^a}ncia aparente e de superf{\'{\i}}cie",
            booktitle = "Anais...",
                 year = "2017",
               editor = "Gherardi, Douglas Francisco Marcolino and Arag{\~a}o, Luiz 
                         Eduardo Oliveira e Cruz de",
                pages = "4181--4188",
         organization = "Simp{\'o}sio Brasileiro de Sensoriamento Remoto, 18. (SBSR)",
            publisher = "Instituto Nacional de Pesquisas Espaciais (INPE)",
              address = "S{\~a}o Jos{\'e} dos Campos",
             abstract = "The objective of this paper is to understand the differences 
                         between apparent (TOA) and surface (BOA) reflectances in the 
                         generation of the Normalized Difference Vegetation Index (NDVI) in 
                         Sentinel-2 satellite image. The images obtained by remote sensing 
                         are influenced by several factors at the moment they are captured 
                         due to the distance that separates the earth surface of the sensor 
                         system. For this reason, in this type of image it is important to 
                         perform atmospheric correction. In the case of this study, as the 
                         main focus is the use of Sentinel-2 satellite images, via the QGis 
                         software plugin, by the method of subtraction of dark objects. 
                         Among the vegetation indices, the most used in the generally 
                         studies, was used the NDVI. The results obtained refer the 
                         {\'A}gua Vermelha watershed, located in the city of 
                         Uberl{\^a}ndia - MG, and showed that the use of this technique in 
                         the Sentinel-2 image showed Sensitive improvement of appearance of 
                         the target, facilitating their visual interpretation. In the 
                         comparison of the NDVI calculated for the TOA and BOA reflectance 
                         values, it was observed that in TOA reflectance the appearance of 
                         vegetation and other classes were not as noticeably clear as that 
                         of the NDVI image in BOA reflectance in which the appearance of 
                         vegetation and other classes Became clearer and more definite. 
                         Finally, it was verified the importance of applying the 
                         atmospheric correction, and the use of the BOA reflectance as the 
                         basis for NDVI generation of the study area.",
  conference-location = "Santos",
      conference-year = "28-31 maio 2017",
                 isbn = "978-85-17-00088-1",
                label = "59546",
             language = "pt",
         organisation = "Instituto Nacional de Pesquisas Espaciais (INPE)",
                  ibi = "8JMKD3MGP6W34M/3PSM2KS",
                  url = "http://urlib.net/ibi/8JMKD3MGP6W34M/3PSM2KS",
           targetfile = "59546.pdf",
                 type = "Mapeamento",
        urlaccessdate = "27 abr. 2024"
}