%0 Conference Proceedings
%4 sid.inpe.br/banon/2002/10.23.09.10
%2 sid.inpe.br/banon/2002/10.23.09.10.33
%@doi 10.1109/SIBGRA.2002.1167163
%T Compression of quincunx subbands
%D 2002
%A Nalon, José Alexandre,
%A Yabu-uti, João Baptista T.,
%E Gonçalves, Luiz Marcos Garcia,
%E Musse, Soraia Raupp,
%E Comba, João Luiz Dihl,
%E Giraldi, Gilson,
%E Dreux, Marcelo,
%B Brazilian Symposium on Computer Graphics and Image Processing, 15 (SIBGRAPI)
%C Fortaleza, CE, Brazil
%8 10-10 Oct. 2002
%I IEEE Computer Society
%J Los Alamitos
%S Proceedings
%1 SBC - Brazilian Computer Society
%X The process of quincunx downsampling in image coding and compression is shown, and the results of its application are accessed. Quincunx downsampling splits the spectrum of a image in two diamond-shaped subbands, and this allows the information to which the human eye is most sensitive to be preserved, and also requiring less bits in a lossy compression. In this paper, we show that quincunx subband coding actually delivers these results. Theory of lattices are briefly reviewed, and a technique that provides successive decompositions for a quincunx lattice is developed, which will allow multi-level decompositions. Simulations were carried out and the results are compared to the rectangular separable subband decomposition.
%@language en
%3 8.pdf
%O The conference was held in Fortaleza, CE, Brazil, from October 7 to 10.