@InProceedings{CostaAlmeSilvVian:2017:EsSoUt,
               author = "Costa, Glauber Carvalho and Almeida, Igor Carvalho and Silva, 
                         Rafael Claudino and Viana, Rafael Bazilio",
                title = "Estudo sobre a utiliza{\c{c}}{\~a}o de alvos 
                         pr{\'e}-sinalizados para apoiar levantamentos 
                         aerofotogram{\'e}tricos realizados com ve{\'{\i}}culo 
                         a{\'e}reo n{\~a}o tripulado (VANT)",
            booktitle = "Anais...",
                 year = "2017",
               editor = "Gherardi, Douglas Francisco Marcolino and Arag{\~a}o, Luiz 
                         Eduardo Oliveira e Cruz de",
                pages = "1036--1043",
         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 use of unmanned aerial vehicles (UAV) for mapping purposes 
                         increases annually in the survey market, mainly driven by the 
                         supply of new and more affordable equipment and easy operational 
                         handling, but there is still a lack of studies that definitively 
                         prove its effectiveness and reliability in terms of the accuracy 
                         of the results achieved, as well as studies to contribute to the 
                         improvement of their positional and altimetry performance. An 
                         alternative to optimize the performance of planialtimetric results 
                         of topographic surveys that use UAV, especially in areas where 
                         photoidentifiable points are either scarce or nonexistent to 
                         support checkpoints and ground control points, would be the 
                         implementation of photogrammetric ground control targets with 
                         coordinates collected through GNSS geodetic receivers and 
                         electronic levels. The installed landmarks aim to support the 
                         triangulation step and the orientation of the images during the 
                         processing steps, as well as serve as check points in order to 
                         verify the cartographic scale achieved. In this study, 14 
                         landmarks were installed and pre-marked in an area that covers a 
                         road connection at the junction of state highways PB-044 and 
                         PB-008, with a total area of approximately 16.30 hectares. 
                         Finally, this article aims to show the steps that lead to the 
                         definition of the type, color, size and spatial distribution of 
                         photogrammetric ground control targets in an area of interest for 
                         roadway design project purposes and surveyed by aerial 
                         photogrammetry using UAV fitted with small-format camera.",
  conference-location = "Santos",
      conference-year = "28-31 maio 2017",
                 isbn = "978-85-17-00088-1",
                label = "59954",
             language = "pt",
         organisation = "Instituto Nacional de Pesquisas Espaciais (INPE)",
                  ibi = "8JMKD3MGP6W34M/3PS4G3H",
                  url = "http://urlib.net/ibi/8JMKD3MGP6W34M/3PS4G3H",
           targetfile = "59954.pdf",
                 type = "VANTs, videografia e alta resolu{\c{c}}{\~a}o",
        urlaccessdate = "27 abr. 2024"
}