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@InProceedings{BragaDalMenEchSte:2018:CoMaEj,
               author = "Braga, Carlos Roberto and Dal Lago, Alisson and Mendon{\c{c}}a, 
                         Rafael Rodrigues Souza de and Echer, Ezequiel and Stenborg, 
                         Guillermo",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)} and {Instituto Nacional de Pesquisas 
                         Espaciais (INPE)} and {Naval Research Laboratory}",
                title = "Coronal mass ejectionsí kinematics in 3d using observations from 
                         stereo",
                 year = "2018",
         organization = "Cospar Scientific Assembly, 42.",
             abstract = "We have implemented a method to track coronal mass ejections (CME) 
                         events in three dimensions by combining triangulation and 
                         tie-pointing analysis with a supervised computer vision algorithm. 
                         This novel approach does not rely on any geometric constraint, and 
                         eliminates the need for visual identification of the CME 
                         boundaries. We applied our method to CME events observed 
                         simultaneously by the twin Solar Terrestrial Relations Observatory 
                         (STEREO) COR2 coronagraph imagers from 2008 to 2011 in order to 
                         obtain their 3D kinematical characterization (i.e., the velocity 
                         vector) along with their morphological properties. Some of these 
                         events have already been analyzed using other methodologies. In 
                         these cases, a comparison of results was carried out. We found 
                         that, in spite of both the different nature of the methodologies, 
                         and the different spatial coverage of the other studies with 
                         respect to ours, the majority of the results agree. On the other 
                         had, some events exhibited discrepancies in the magnitude of the 
                         velocity vector, in the longitudinal direction of propagation, and 
                         in latitude. The discrepancies appeared mainly in those cases 
                         where quasi-simultaneous, quasi-co-located events were observed in 
                         the coronagraphs fields of view. (G.S. gratefully acknowledges the 
                         support of NASA.).",
  conference-location = "Pasadena, California",
      conference-year = "14-22 July",
             language = "en",
        urlaccessdate = "01 dez. 2020"
}


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