%0 Conference Paper %B Proceedings 1st International Symposium on 3D Data Processing Visualization and Transmission %D 2002 %T Half-edge Multi-Tessellation: a compact representations for multiresolution tetrahedral meshes %A Danovaro,E. %A De Floriani, Leila %X This paper deals with the problem of analyzing and vi-sualizing volume data sets of large size. To this aim, we define a three-dimensional multi-resolution model based on unstructured tetrahedral meshes, and built through a half- edge-collapse simplification strategy, that we call a Half- Edge Multi-Tessellation (MT). We propose a new compact data structure for a half-edge MT, and we analyze it with respect to both its space requirements and its efficiency in supporting Level-Of-Detail (LOD) queries based on selec- tive refinement. %B Proceedings 1st International Symposium on 3D Data Processing Visualization and Transmission %P 494 - 499 %8 2002/// %G eng