Extraction and LOD Control of Colored Interval Volume

Abstract

Interval volumes allow the user to represent a three-dimensional subvolume for which associated scalar field values lie within a specified closed interval. Interval volume fitting can be viewed as a more effective tool for exploring volumetric ROIs, compared with isosurface fitting. In order to extract interval volumes from which geometrical features can be effectively mined, the coherence structure between adjacent voxels is globally examined. In addition, a simplification scheme to decimate resultant triangle patches is extended to efficiently transmit and render polygonal patch datasets for large-scale interval volumes.