RT Journal Article
JF IEEE Transactions on Visualization & Computer Graphics
YR 2009
VO 16
SP 484
TI Enhanced Voxelization and Representation of Objects with Sharp Details in Truncated Distance Fields
A1 Miloš Šrámek,
A1 Pavol Novotný,
A1 Leonid I. Dimitrov,
K1 Voxelization
K1 truncated distance fields
K1 run-length compression
K1 CSG operations
K1 sharp details
K1 implicit solids
K1 artifacts
K1 representability.
AB This paper presents a new method for voxelization of solid objects containing sharp details. Voxelization is a sampling process that transforms a continuously defined object into a discrete one represented as a voxel field. The voxel field can be used for rendering or other purposes, which often involve a reconstruction of a continuous approximation of the original object. Objects to be voxelized need to fulfill certain representability conditions; otherwise, disturbing artifacts appear during reconstruction. The method proposed here extends the traditional distance-based voxelization by an a-priori detection of sharp object details and their subsequent modification in such a way that the resulting object to be voxelized fulfills the representability conditions. The resulting discrete objects are represented by means of truncated (i.e., narrow-band) distance fields, which provide reduction of memory requirements and further processing by level set techniques. This approach is exemplified by two classes of solid objects that normally contain such sharp details: implicit solids and solids resulting from CSG operations. In both cases, the sharp details are rounded to a specific curvature dictated by the sampling distance.
PB IEEE Computer Society, [URL:http://www.computer.org]
SN 1077-2626
LA English
DO 10.1109/TVCG.2009.74
LK http://doi.ieeecomputersociety.org/10.1109/TVCG.2009.74