@InProceedings{ConciAqui:1999:UsAdCo,
               author = "Conci, Aura and Aquino, Felipe R.",
                title = "Using adaptive contraction for fractal image coding based on local 
                         fractal dimension",
            booktitle = "Proceedings...",
                 year = "1999",
               editor = "Stolfi, Jorge and Tozzi, Cl{\'e}sio Luis",
                pages = "231--239",
         organization = "Brazilian Symposium on Computer Graphics and Image Processing, 12. 
                         (SIBGRAPI)",
            publisher = "IEEE Computer Society",
              address = "Los Alamitos",
                 note = "The conference was held in Campinas, SP, Brazil, from October 17 
                         to 20.",
             keywords = "fractal dimension, fractal compression, partitioned iterated 
                         function system-pifs, image compression.",
             abstract = "In automatic fractal image compression, most of the encoding time 
                         is spent on finding the best match between each range block and 
                         the domain blocks. We propose the use of the local compexity of 
                         the image domain blocks to reduce the number of pairs to be tested 
                         on this search. Indexing the contracted domain pools according to 
                         their local fractal dimension and using multiple contraction 
                         factors we can confine all potential matches to a relatively small 
                         number of possibilities. By selecting an appropriate criterion for 
                         close match, the compression time can be shortened without image 
                         quality degradation. The performance of the proposed algorithm, 
                         evaluated by means of fidelity versus encoding time and 
                         compression ratio, is compared with five approaches. Future 
                         developments can also improve the compression ratio by using 
                         fractal dimension in the definition of the size of range blocks.",
  conference-location = "Campinas, SP, Brazil",
      conference-year = "17-20 Oct. 1999",
                  doi = "10.1109/SIBGRA.1999.805729",
                  url = "http://dx.doi.org/10.1109/SIBGRA.1999.805729",
         organisation = "SBC - Brazilian Computer Society and UNICAMP - University of 
                         Campinas",
                  ibi = "83LX3pFwXQZ4BFjAq/jiGTc",
                  url = "http://urlib.net/ibi/83LX3pFwXQZ4BFjAq/jiGTc",
           targetfile = "025-83114570.pdf",
        urlaccessdate = "2024, May 02"
}