author = "Mascarenhas, Nelson Delfino d'{\'A}vila and Santos, Saulo Savio 
                         Leite and Cruvinel, Paulo Estev{\~a}o",
                title = "The use of MAP estimation techniques in the tomographic 
                         reconstruction of Poisson noise corrupted images",
            booktitle = "Anais...",
                 year = "1996",
               editor = "Velho, Luiz and Albuquerque, Arnaldo de and Lotufo, Roberto A.",
                pages = "197--204",
         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 = "This work presents new methods for the tomographic reconstruction 
                         of images with Poisson noise corrupted projections. The 
                         reconstruction method is performed by first filtering the noisy 
                         projections under the Maximum a Posteriori criterion and 
                         subsequently reconstructing the images through conventional 
                         filtering-backprojection methods using the ramp filter. The {"}a 
                         priori{"} knowledge is incorporated by using several densities, 
                         including the Gaussian and densities defined on the non-negative 
                         real line. These densities were used to denote the fact that the 
                         rates of counting on the projections are non-negative quantities. 
                         Experimental results, both simulated and real, indicate that, by 
                         using the MAP criterion, it is possible to obtain better 
                         performance, as compared to conventional methods of 
                         reconstruction, with a very small increase in computational 
  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/cMRki",
                  url = "",
           targetfile = "a17.pdf",
                 type = "Aplica{\c{c}}{\~o}es em Medicina",
        urlaccessdate = "2021, Nov. 30"