Display of Surfaces from Volume Data
IEEE Computer Graphics and Applications
Area and volume coherence for efficient visualization of 3D scalar functions
VVS '90 Proceedings of the 1990 workshop on Volume visualization
Semi-automatic generation of transfer functions for direct volume rendering
VVS '98 Proceedings of the 1998 IEEE symposium on Volume visualization
Hardware-accelerated volume and isosurface rendering based on cell-projection
Proceedings of the conference on Visualization '00
High-quality pre-integrated volume rendering using hardware-accelerated pixel shading
Proceedings of the ACM SIGGRAPH/EUROGRAPHICS workshop on Graphics hardware
Multidimensional Transfer Functions for Interactive Volume Rendering
IEEE Transactions on Visualization and Computer Graphics
Beam tracing polygonal objects
SIGGRAPH '84 Proceedings of the 11th annual conference on Computer graphics and interactive techniques
Summed-area tables for texture mapping
SIGGRAPH '84 Proceedings of the 11th annual conference on Computer graphics and interactive techniques
Gaussian Transfer Functions for Multi-Field Volume Visualization
Proceedings of the 14th IEEE Visualization 2003 (VIS'03)
Efficient interactive pre-integrated volume rendering
ICCS'05 Proceedings of the 5th international conference on Computational Science - Volume Part III
High quality rendering of compressed volume data formats
EUROVIS'05 Proceedings of the Seventh Joint Eurographics / IEEE VGTC conference on Visualization
High-quality lighting and efficient pre-integration for volume rendering
VISSYM'04 Proceedings of the Sixth Joint Eurographics - IEEE TCVG conference on Visualization
Improving the quality of multi-resolution volume rendering
EUROVIS'06 Proceedings of the Eighth Joint Eurographics / IEEE VGTC conference on Visualization
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This work presents an efficient extension of pre-integrated volume rendering for multi-dimensional transfer functions. Since even two-dimensional transfer functions can result in strong rendering artifacts that cannot be resolved by standard ray casting, we propose a space-covering volume sampling scheme that does not require additional samples of the volume data. Based on this sampling scheme, our approach computes box integrals of the transfer functions, which are evaluated with the help of a small number of texture lookups in tabulated integral functions. We demonstrate the achieved performance and improvements in image quality with a prototypical GPU (graphics processing unit) implementation.