VOXEL Based Modeling and Rendering Irregular Solids

In this paper the authors propose a VOXEL model for obtaining the octree of sculptured surfaces and solids. This model is obtained through a serial stacking of solid cross-sections (slice) to build the octree. The authors show how rendering can be done using the VOXEL model by associating a voxel-type viz. face, edge and vertex to capture the orientation of the underlying primitive solid element and hence assigning a normal for every voxel. The VOXEL model can be easily extended to perform radiosity analysis which is highlighted in the paper