Raytracing irregular volume data
VVS '90 Proceedings of the 1990 workshop on Volume visualization
A polygonal approximation to direct scalar volume rendering
VVS '90 Proceedings of the 1990 workshop on Volume visualization
Visibility-ordering meshed polyhedra
ACM Transactions on Graphics (TOG)
A rendering algorithm for visualizing 3D scalar fields
SIGGRAPH '88 Proceedings of the 15th annual conference on Computer graphics and interactive techniques
Multiresolution view-dependent splat based volume rendering of large irregular data
PVG '01 Proceedings of the IEEE 2001 symposium on parallel and large-data visualization and graphics
Cell projection of convex polyhedra
VG '03 Proceedings of the 2003 Eurographics/IEEE TVCG Workshop on Volume graphics
An architecture for a scientific visualization system
VIS '92 Proceedings of the 3rd conference on Visualization '92
Interactive Transfer Function Control for Monte Carlo Volume Rendering
VV '04 Proceedings of the 2004 IEEE Symposium on Volume Visualization and Graphics
Hardware-Assisted Visibility Sorting for Unstructured Volume Rendering
IEEE Transactions on Visualization and Computer Graphics
Proceedings of the 14th IEEE Visualization 2003 (VIS'03)
Interactive parallel visualization of large particle datasets
Parallel Computing - Parallel graphics and visualization
Hardware-Assisted Point-Based Volume Rendering of Tetrahedral Meshes
SIBGRAPI '07 Proceedings of the XX Brazilian Symposium on Computer Graphics and Image Processing
Scalable Hybrid Unstructured and Structured Grid Raycasting
IEEE Transactions on Visualization and Computer Graphics
A Particle Modeling for Rendering Irregular Volumes
UKSIM '08 Proceedings of the Tenth International Conference on Computer Modeling and Simulation
High-quality particle-based volume rendering for large-scale unstructured volume datasets
Journal of Visualization
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We present a technique for previewing large-scale irregular volume datasets using an improved particle-based volume rendering (PBVR) technique. Volume rendering of irregular grid volume data is considerably more complicated than that of regular grid data, since the sampling and compositing processes, which must be done in visibility order, are not straightforward. In our original PBVR, rendering involves generating and projecting sub-pixel-size, opaque, and emissive particles without visibility ordering. To make it easier to preview large-scale irregular volume datasets, we improve our original PBVR technique in two respects. The first is that we exploit its scalability to develop a cell-by-cell particle generation technique. The second is that we reduce the memory cost of the frame buffer using a pixel-by-pixel superimposing technique. To measure the effectiveness of our proposed method, we apply it to huge irregular volume datasets composed of 71 mega hexahedral cells or 1 giga tetrahedral cells.