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		<doi>10.1109/SIBGRA.2004.1352966</doi>
		<citationkey>LewinerVelhLopeMell:2004:HiIsEx</citationkey>
		<title>Hierarchical isocontours extraction and compression</title>
		<format>On-line</format>
		<year>2004</year>
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		<size>372 KiB</size>
		<author>Lewiner, Thomas,</author>
		<author>Velho, Luiz Carlos Pacheco Rodrigues,</author>
		<author>Lopes, Hélio,</author>
		<author>Mello, Vinicius,</author>
		<affiliation>PUC-­Rio, Departamento de Matematica, Rio de Janeiro -- Brazil,</affiliation>
		<affiliation>INRIA, Geometrica Project, Sophia Antipolis -- France,</affiliation>
		<affiliation>IMPA, Laboratorio Visgraf, Rio de Janeiro -- Brazil,</affiliation>
		<editor>Araújo, Arnaldo de Albuquerque,</editor>
		<editor>Comba, João Luiz Dihl,</editor>
		<editor>Navazo, Isabel,</editor>
		<editor>Sousa, Antônio Augusto de,</editor>
		<e-mailaddress>thomas.lewiner@polytechnique.org</e-mailaddress>
		<conferencename>Brazilian Symposium on Computer Graphics and Image Processing, 17 (SIBGRAPI) - Ibero-American Symposium on Computer Graphics, 2 (SIACG)</conferencename>
		<conferencelocation>Curitiba, PR, Brazil</conferencelocation>
		<date>17-20 Oct. 2004</date>
		<publisher>IEEE Computer Society</publisher>
		<publisheraddress>Los Alamitos</publisheraddress>
		<booktitle>Proceedings</booktitle>
		<tertiarytype>Full Paper</tertiarytype>
		<transferableflag>1</transferableflag>
		<versiontype>finaldraft</versiontype>
		<keywords>level sets, data compression, simplicial methods, progressive transmission, computer graphics, geometry processing.</keywords>
		<abstract>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.</abstract>
		<language>en</language>
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