Ray casting of multiple volumetric datasets with polyhedral boundaries on manycore GPUs
ACM SIGGRAPH Asia 2009 papers
Interactive isosurfaces with quadratic C1 splines on truncated octahedral partitions
Information Visualization - Special issue on Visualization and Data Analysis 2011
EuroVis'10 Proceedings of the 12th Eurographics / IEEE - VGTC conference on Visualization
Real-time isosurface rendering of smooth fields
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Continuous representation of projected attribute spaces of multifields over any spatial sampling
EuroVis '13 Proceedings of the 15th Eurographics Conference on Visualization
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The method of Moving Least Squares (MLS) is a popular framework for reconstructing continuous functions from scattered data due to its rich mathematical properties and well-understood theoretical foundations. This paper applies MLS to volume rendering, providing a unified mathematical framework for ray casting of scalar data stored over regular as well as irregular grids. We use the MLS reconstruction to render smooth isosurfaces and to compute accurate derivatives for high-quality shading effects. We also present a novel, adaptive preintegration scheme to improve the efficiency of the ray casting algorithm by reducing the overall number of function evaluations, and an efficient implementation of our framework exploiting modern graphics hardware. The resulting system enables high-quality volume integration and shaded isosurface rendering for regular and irregular volume data.