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2003
IEEE

Gaussian Transfer Functions for Multi-Field Volume Visualization

10 years 2 months ago
Gaussian Transfer Functions for Multi-Field Volume Visualization
Volume rendering is a flexible technique for visualizing dense 3D volumetric datasets. A central element of volume rendering is the conversion between data values and observable quantities such as color and opacity. This process is usually realized through the use of transfer functions that are precomputed and stored in lookup tables. For multidimensional transfer functions applied to multivariate data, these lookup tables become prohibitively large. We propose the direct evaluation of a particular type of transfer functions based on a sum of Gaussians. Because of their simple form (in terms of number of parameters), these functions and their analytic integrals along line segments can be evaluated efficiently on current graphics hardware, obviating the need for precomputed lookup tables. We have adopted these transfer functions because they are well suited for classification based on a unique combination of multiple data values that localize features in the transfer function domain. W...
Aaron E. Lefohn, Charles D. Hansen, Emil Praun, Jo
Added 05 Nov 2009
Updated 05 Nov 2009
Type Conference
Year 2003
Where VIS
Authors Aaron E. Lefohn, Charles D. Hansen, Emil Praun, Joe Kniss, Milan Ikits, Simon Premoze
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