author = "Lima, Juliano Bandeira and Campello de Souza, Ricardo Menezes",
          affiliation = "{Federal University of Pernambuco} and {Federal University of 
                title = "Histogram Uniformization for Digital Image Encryption",
            booktitle = "Proceedings...",
                 year = "2012",
               editor = "Freitas, Carla Maria Dal Sasso and Sarkar, Sudeep and Scopigno, 
                         Roberto and Silva, Luciano",
         organization = "Conference on Graphics, Patterns and Images, 25. (SIBGRAPI)",
            publisher = "IEEE Computer Society",
              address = "Los Alamitos",
             keywords = "image encryption, histogram uniformization, finite field cosine 
             abstract = "In this paper, histogram uniformization of digital images by means 
                         of the finite field cosine transform (FFCT) is examined. The 
                         approach consists in dividing the image into blocks and applying 
                         the FFCT, in a recursive manner, to each block. Simulations of the 
                         procedure show that the histogram of the transformed image 
                         exhibits a uniform shape and its pixels have low correlation with 
                         their neighbors. This result is achieved due to the modular 
                         arithmetic used in the application of the FFCT to the image 
                         blocks. The suitability of the proposed technique in the context 
                         of image encryption is discussed.",
  conference-location = "Ouro Preto",
      conference-year = "Aug. 22-25, 2012",
             language = "en",
           targetfile = "102125.pdf",
        urlaccessdate = "2021, Jan. 28"