Item
Boada, Imma
Navazo Alvaro, Isabel 

2001  
Describes a method to code a decimated model of an isosurface on an octree representation while maintaining volume data if it is needed. The proposed technique is based on grouping the marching cubes (MC) patterns into five configurations according the topology and the number of planes of the surface that are contained in a cell. Moreover, the discrete number of planes on which the surface lays is fixed. Starting from a complete volume octree, with the isosurface codified at terminal nodes according to the new configuration, a bottomup strategy is taken for merging cells. Such a strategy allows one to implicitly represent coplanar faces in the upper octree levels without introducing any error. At the end of this merging process, when it is required, a reconstruction strategy is applied to generate the surface contained in the octree intersected leaves. Some examples with medical data demonstrate that a reduction of up to 50% in the number of polygons can be achieved  
application/pdf  
Boada, I., i Navazo, I. (2001). An octree isosurface codification based on discrete planes. Conference on Computer Graphics : Spring 2001, 130137. Recuperat 28 setembre 2010, a http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=945347  
0769512151  
http://hdl.handle.net/10256/3057  
eng  
IEEE  
Reproducci贸 digital del document publicat a: http://dx.doi.org/10.1109/SCCG.2001.945347 Articles publicats (DIMA) 

漏 Conference on Computer Graphics : Spring 2001, 2001, p. 130137  
Tots els drets reservats  
Imatges  Processament
Image processing 

An octree isosurface codification based on discrete planes  
info:eurepo/semantics/article  
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