author = "Candeas, Alcione Jandir and Braga Neto, Ulisses de Mendon{\c{c}}a 
                         and Carvalho Filho, Edson Costa de Barros",
                title = "A mathematical morphology approach to the characterization of 
                         astronomical objects",
            booktitle = "Anais...",
                 year = "1996",
               editor = "Velho, Luiz and Albuquerque, Arnaldo de and Lotufo, Roberto A.",
                pages = "235--242",
         organization = "Simp{\'o}sio Brasileiro de Computa{\c{c}}{\~a}o Gr{\'a}fica e 
                         Processamento de Imagens, 9. (SIBGRAPI)",
            publisher = "Sociedade Brasileira de Computa{\c{c}}{\~a}o",
              address = "Porto Alegre",
             abstract = "We deal in this work with a broadly studied topic in astronomical 
                         imaging, namely the star/galaxy discrimination problem. Through 
                         the use of Mathematical Morphology, we propose an original 
                         approach to the characterization of these astronomical objects, 
                         which is based on gray-level shape information. The main steps in 
                         our method are image pre-processing, segmentation and feature 
                         extraction, all of which employ Mathematical Morphology tools that 
                         were implemented using the MMach toolbox for the Khoros system. We 
                         present a comparison between our segmentation results, based on 
                         the watershed method, and those of a classical software package 
                         SExtractor. The shape information is extracted through the use of 
                         the gray-level morphological pattern spectrum, which yields very 
                         satisfactory shape features, that promise to be very suitable for 
                         future work in neural-network automatic classification.",
  conference-location = "Caxambu",
      conference-year = "29 out. - 1 nov. 1996",
                 isbn = "85-244-0103-6",
             language = "en",
         organisation = "SBC - Sociedade Brasileira de Computa{\c{c}}{\~a}o; UFMG - 
                         Universidade Federal de Minas Gerais",
                  ibi = "83LX3pFwXQZW44Lb/d4RfB",
                  url = "",
           targetfile = "a66.pdf",
                 type = "Morfologia Matem{\'a}tica",
        urlaccessdate = "2021, Dec. 03"