@InProceedings{JardimFanColl:2017:PrFeCá,
               author = "Jardim, Pedro Frediani and Fan, Fernando Mainardi and Collischonn, 
                         Walter",
                title = "Proposta de ferramenta para c{\'a}lculo autom{\'a}tico de 
                         larguras de rios com base em imagens matriciais",
            booktitle = "Anais...",
                 year = "2017",
               editor = "Gherardi, Douglas Francisco Marcolino and Arag{\~a}o, Luiz 
                         Eduardo Oliveira e Cruz de",
                pages = "4502--4509",
         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 = "Hydrological modeling and remote sensing are very important tools 
                         in predicting extreme scenarios and events related to the 
                         hydrological cycle. Prior knowledge of the occurrence of floods 
                         and droughts, and its spatial extension, gives the decision makers 
                         the opportunity to avoid and prevent possible economic, human or 
                         environmental damages and losses. To obtain accurate and reliable 
                         results coming from modeling and spatialization of floods 
                         extensions is necessary the best information regarding hydraulic 
                         parameters of the geometry of streams such as width and depth. 
                         Traditionally this information for large basins modeling comes 
                         from approximations based from drainage area or discharge. Besides 
                         the application in modeling, the knowledge of rivers width have 
                         direct applications in ecology, construction and navigation for 
                         example. This paper proposes an automatic calculation methodology 
                         of river widths along the entire representable length of rivers in 
                         raster images derived from remote sensing. To validate the method, 
                         images from the LANDSAT 8 satellite were used to create a water 
                         mask and perform the algorithm. The results were compared to 
                         manual measurements of width and also to a drainage area 
                         relationship. The results showed that the width calculated by the 
                         proposed methodology were significantly close to the real width 
                         and much better than the use of a drainage area relationship. It 
                         is expected that these results reported with the use of the river 
                         width calculation tool to be the base of various applications 
                         where the width is a key parameter.",
  conference-location = "Santos",
      conference-year = "28-31 maio 2017",
                 isbn = "978-85-17-00088-1",
                label = "59656",
             language = "pt",
         organisation = "Instituto Nacional de Pesquisas Espaciais (INPE)",
                  ibi = "8JMKD3MGP6W34M/3PSM38E",
                  url = "http://urlib.net/ibi/8JMKD3MGP6W34M/3PSM38E",
           targetfile = "59656.pdf",
                 type = "Recursos h{\'{\i}}dricos",
        urlaccessdate = "27 abr. 2024"
}