%0 Conference Proceedings
%4 sid.inpe.br/banon/2004/07.21.21.25
%2 sid.inpe.br/banon/2004/07.21.21.25.53
%@doi 10.1109/SIBGRA.2004.1352966
%T Hierarchical isocontours extraction and compression
%D 2004
%A Lewiner, Thomas,
%A Velho, Luiz Carlos Pacheco Rodrigues,
%A Lopes, Hélio,
%A Mello, Vinicius,
%@affiliation PUC-Rio, Departamento de Matematica, Rio de Janeiro -- Brazil,
%@affiliation INRIA, Geometrica Project, Sophia Antipolis -- France,
%@affiliation IMPA, Laboratorio Visgraf, Rio de Janeiro -- Brazil,
%E Araújo, Arnaldo de Albuquerque,
%E Comba, João Luiz Dihl,
%E Navazo, Isabel,
%E Sousa, Antônio Augusto de,
%B Brazilian Symposium on Computer Graphics and Image Processing, 17 (SIBGRAPI) - Ibero-American Symposium on Computer Graphics, 2 (SIACG)
%C Curitiba, PR, Brazil
%8 17-20 Oct. 2004
%I IEEE Computer Society
%J Los Alamitos
%S Proceedings
%K level sets, data compression, simplicial methods, progressive transmission, computer graphics, geometry processing.
%X In this work, we introduce a new scheme to extract hierarchical isocontours from regular and irregular 2D sampled data and to encode it at single rate or progressively. A dynamic tessellation is used to represent and adapt the 2D data to the isocontour. This adaptation induces a controlled multiresolution representation of the isocontour. We can then encode this representation and control the geometry and topology of the decoded isocontour. The resulting algorithms form an efficient and flexible isocontour extraction and compression scheme.
%@language en
%3 Isocontour_Sibgrapi.pdf